Fine particles
16.4µg/m³Moderate · 1 hourCAMS model • Open-Meteo
Taichung CityAir quality, PM2.5 and PM10
Check PM2.5 and PM10 particle levels alongside ozone, nitrogen dioxide and other gases. Compare the latest available concentrations with recent days and explore changes in air pollution through the available historical records.
Taichung City - latest available concentrations (November 11, 2026, 10:00 local time): PM2.5: 16.4 µg/m³, PM10: 17.2 µg/m³, O₃: 42 µg/m³, NO₂: 26.6 µg/m³, SO₂: 40.3 µg/m³, CO: 518 µg/m³. These are hourly CAMS model values for a point representing the city.
Air quality questions →Taichung City · Air pollutant concentrations
Data time: November 11, 2026 · 10:00 · local timeParticulate matter
17.2µg/m³Fair · 1 hourOzone
42µg/m³Good · 1 hourNitrogen dioxide
26.6µg/m³Moderate · 1 hourSulphur dioxide
40.3µg/m³Moderate · 1 hourCarbon monoxide
518µg/m³PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
DAILY DATA · Taichung City
Taichung City - air pollution over recent days (2026-08-31 - 2026-11-10)
Concentrations of all available pollutants for this city.
PM2.5Lowest 17.69 2026-11-09Highest 51.32 2026-11-042026-08-31 - 2026-11-10
PM10Lowest 18.6 2026-09-03Highest 56.59 2026-11-042026-08-31 - 2026-11-10
O₃Lowest 12.33 2026-09-01Highest 72.25 2026-09-072026-08-31 - 2026-11-10
NO₂Lowest 31.82 2026-11-10Highest 64.15 2026-11-042026-08-31 - 2026-11-10
SO₂Lowest 14.84 2026-11-09Highest 64.43 2026-11-062026-08-31 - 2026-11-10
COLowest 317.92 2026-09-06Highest 715.54 2026-11-072026-08-31 - 2026-11-10
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-11-10 | 2026-11-09 | 2026-11-08 | 2026-11-07 | 2026-11-06 | 2026-11-05 | 2026-11-04 | 2026-09-07 | 2026-09-06 | 2026-09-05 | 2026-09-04 | 2026-09-03 | 2026-09-02 | 2026-09-01 | 2026-08-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 18.16 | 17.69 | 37.6 | 40.09 | 47.79 | 40.7 | 51.32 | 33.84 | 27.55 | 37.59 | 34.86 | 18.45 | 20.35 | 19.15 | 21.17 |
| PM10 | 19.76 | 19.56 | 41 | 42.06 | 49.62 | 41.99 | 56.59 | 37.43 | 31.1 | 40.03 | 35.11 | 18.6 | 20.67 | 19.32 | 21.2 |
| O₃ | 31.88 | 26.88 | 51.75 | 36.63 | 43.08 | 45.04 | 40.46 | 72.25 | 64.88 | 52.13 | 53.25 | 18.83 | 17 | 12.33 | 29.88 |
| NO₂ | 31.82 | 37.88 | 52.62 | 56.35 | 59.21 | 55.75 | 64.15 | 51.6 | 40.61 | 52.08 | 62.48 | 51.08 | 51.68 | 49.44 | 40.28 |
| SO₂ | 19.2 | 14.84 | 36.83 | 39.93 | 64.43 | 49.09 | 61.61 | 30.38 | 19.04 | 38.73 | 54.47 | 25.06 | 21.9 | 23.03 | 25.33 |
| CO | 344.96 | 354.42 | 537.17 | 715.54 | 615.75 | 536.38 | 674.38 | 399.96 | 317.92 | 521.04 | 648.58 | 503.38 | 399.88 | 450.88 | 427.83 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
AIR QUALITY ARCHIVE · Taichung City
Taichung City - air pollution history (2016-12 - 2020-05)
Compare monthly particle and gas concentrations in the available archive.
PM2.5Lowest 10.25 2019-06Highest 28.73 2016-122016-12 - 2020-05
PM10Lowest 16.4 2019-06Highest 57.38 2016-122016-12 - 2020-05
O₃ (ppm)Lowest 0.02212 2019-06Highest 0.04128 2019-102016-12 - 2020-05
NO₂ (ppm)Lowest 0.00853 2019-07Highest 0.018025 2017-032016-12 - 2020-05
SO₂ (ppm)Lowest 0.00188 2019-02Highest 0.00338 2017-092016-12 - 2020-05
CO (ppm)Lowest 0.2348 2019-07Highest 0.507 2020-012016-12 - 2020-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 µg/m³ | 14.14 | 20.52 | 22.1 | 22.86 | 23.32 | 16.74 | 18.24 | 24.32 | 16 | 14.5 | 11.45 | 10.25 | 16.74 | 20.96 | 23.64 | 21.82 | 21.42 | — | — | — | — | — | — | — | — | — | — | 22.06 | 18.52 | 22.3 | 16.54 | 19.8 | 23.36 | — | — | 12.85 | 19.55 | 25.65 | 27.17 | 25.05 | 23.18 | 28.73 |
| PM10 µg/m³ | 26.28 | 35.22 | 39.4 | 39.14 | 38.94 | 30.98 | 36.3 | 41.94 | 30.2 | 25.7 | 22 | 16.4 | 31.38 | 35.92 | 42.76 | 40.46 | 43.42 | — | — | — | — | — | — | — | — | — | — | 44.62 | 40.5 | 47.24 | 39.36 | 43.08 | 46.28 | — | — | 25.85 | 40.42 | 48.2 | 54.23 | 50.42 | 46.7 | 57.38 |
| O₃ (ppm) | 0.0297 | 0.038 | 0.03334 | 0.0306 | 0.02814 | 0.02568 | 0.03544 | 0.04128 | 0.03696 | 0.02758 | 0.02298 | 0.02212 | 0.03016 | 0.0315 | 0.0317 | 0.02706 | 0.02622 | — | — | — | — | — | — | — | — | — | — | 0.0285 | 0.02418 | 0.0286 | 0.0288 | 0.03798 | 0.03588 | — | — | 0.023375 | 0.033875 | 0.036025 | 0.0358 | 0.032125 | 0.0279 | 0.0249 |
| NO₂ (ppm) | 0.009152 | 0.0143 | 0.01484 | 0.01582 | 0.01644 | 0.0157 | 0.013474 | 0.01275 | 0.010294 | 0.00971 | 0.00853 | 0.010286 | 0.014094 | 0.01384 | 0.01726 | 0.0151 | 0.01784 | — | — | — | — | — | — | — | — | — | — | 0.01598 | 0.01752 | 0.01664 | 0.01466 | 0.012434 | 0.01458 | — | — | 0.01055 | 0.014925 | 0.0161 | 0.018025 | 0.01555 | 0.014825 | 0.01695 |
| SO₂ (ppm) | 0.002284 | 0.00202 | 0.002128 | 0.002172 | 0.002128 | 0.002114 | 0.002238 | 0.002282 | 0.002246 | 0.002334 | 0.002176 | 0.002158 | 0.002248 | 0.002288 | 0.002144 | 0.00188 | 0.00206 | — | — | — | — | — | — | — | — | — | — | 0.001944 | 0.002254 | 0.002394 | 0.002172 | 0.002448 | 0.00338 | — | — | 0.003055 | 0.003035 | 0.003215 | 0.002512 | 0.002358 | 0.002138 | 0.002397 |
| CO (ppm) | 0.2786 | 0.3898 | 0.4136 | 0.432 | 0.507 | 0.41 | 0.3406 | 0.366 | 0.29 | 0.286 | 0.2348 | 0.2916 | 0.3928 | 0.4228 | 0.484 | 0.4602 | 0.4916 | — | — | — | — | — | — | — | — | — | — | 0.4636 | 0.453 | 0.4402 | 0.3706 | 0.3446 | 0.3644 | — | — | 0.30375 | 0.3835 | 0.422 | 0.44425 | 0.3985 | 0.415 | 0.46225 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
Historical data by station 5
AIR QUALITY ARCHIVE · Dali
Dali
Station code: Dali
Monthly monitoring station data.
PM2.5Lowest 10.1 2019-06Highest 30 2016-122016-12 - 2020-05
PM10Lowest 20.5 2019-07Highest 65.8 2016-122016-12 - 2020-05
O₃ (ppm)Lowest 0.0178 2018-01Highest 0.0368 2017-092016-12 - 2020-05
NO₂ (ppm)Lowest 0.00887 2019-07Highest 0.0233 2017-032016-12 - 2020-05
SO₂ (ppm)Lowest 0.0022 2017-11Highest 0.00332 2017-092016-12 - 2020-05
CO (ppm)Lowest 0.287 2019-07Highest 0.639 2020-012016-12 - 2020-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 µg/m³ | 14.8 | 21.6 | 23.3 | 24 | 24.4 | 17.5 | 19.1 | 24.8 | 15.4 | 13.1 | 10.9 | 10.1 | 14.7 | 18.8 | 21.3 | 18.8 | 18.8 | — | — | — | — | — | — | — | — | — | — | 18.6 | 17.7 | 21.5 | 15.7 | 23 | 21.8 | — | — | 11.8 | 17.4 | 25.2 | 30 | 28.2 | 26.8 | 30 |
| PM10 µg/m³ | 27.9 | 38.4 | 44.2 | 44.6 | 43.3 | 33.7 | 39.1 | 44.4 | 32.2 | 27.1 | 20.5 | 20.7 | 35.1 | 37.8 | 45.8 | 44.3 | 45.5 | — | — | — | — | — | — | — | — | — | — | 50.1 | 47.5 | 53.1 | 46.3 | 51.2 | 53.8 | — | — | 28.8 | 46.8 | 56 | 60.7 | 57.7 | 52.8 | 65.8 |
| O₃ (ppm) | 0.0268 | 0.0327 | 0.0288 | 0.0256 | 0.0216 | 0.0198 | 0.0304 | 0.0368 | 0.0352 | 0.0261 | 0.0217 | 0.0189 | 0.0233 | 0.028 | 0.0268 | 0.0233 | 0.021 | — | — | — | — | — | — | — | — | — | — | 0.0208 | 0.0178 | 0.0223 | 0.024 | 0.0333 | 0.0368 | — | — | 0.0211 | 0.0308 | 0.0284 | 0.0296 | 0.0261 | 0.0224 | 0.0194 |
| NO₂ (ppm) | 0.00992 | 0.0167 | 0.0173 | 0.0184 | 0.0206 | 0.02 | 0.0174 | 0.016 | 0.0123 | 0.0099 | 0.00887 | 0.0108 | 0.0169 | 0.0156 | 0.0206 | 0.0185 | 0.0225 | — | — | — | — | — | — | — | — | — | — | 0.0203 | 0.0227 | 0.0204 | 0.0188 | 0.0147 | 0.0155 | — | — | 0.0115 | 0.0176 | 0.0195 | 0.0233 | 0.022 | 0.0213 | 0.0228 |
| SO₂ (ppm) | 0.00242 | 0.0025 | 0.00274 | 0.00279 | 0.00271 | 0.00232 | 0.00263 | 0.0029 | 0.0029 | 0.00277 | 0.00252 | 0.0025 | 0.00268 | 0.00243 | 0.00255 | 0.00236 | 0.00248 | — | — | — | — | — | — | — | — | — | — | 0.00236 | 0.00223 | 0.0025 | 0.0022 | 0.00252 | 0.00332 | — | — | 0.00236 | 0.00281 | 0.00273 | 0.00248 | 0.0025 | 0.00245 | 0.00242 |
| CO (ppm) | 0.314 | 0.483 | 0.502 | 0.532 | 0.639 | 0.551 | 0.473 | 0.478 | 0.389 | 0.36 | 0.287 | 0.344 | 0.506 | 0.481 | 0.618 | 0.572 | 0.628 | — | — | — | — | — | — | — | — | — | — | 0.599 | 0.575 | 0.565 | 0.5 | 0.46 | 0.45 | — | — | 0.308 | 0.452 | 0.497 | 0.544 | 0.534 | 0.567 | 0.6 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
How should I interpret the data and averaging period? →
OpenAQ ↗Taiwan
AIR QUALITY ARCHIVE · Fengyuan
Fengyuan
Station code: Fengyuan
Monthly monitoring station data.
PM2.5Lowest 12.3 2019-06Highest 27.8 2016-122016-12 - 2020-05
PM10Lowest 17.4 2019-06Highest 45.5 2017-032016-12 - 2020-05
O₃ (ppm)Lowest 0.0248 2018-01Highest 0.0417 2019-102016-12 - 2020-05
NO₂ (ppm)Lowest 0.00603 2019-07Highest 0.0148 2019-012016-12 - 2020-05
SO₂ (ppm)Lowest 0.00152 2020-02Highest 0.004 2017-062016-12 - 2020-05
CO (ppm)Lowest 0.228 2019-07Highest 0.485 2019-042016-12 - 2020-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 µg/m³ | 13.9 | 19.5 | 21.8 | 20.4 | 21.1 | 14.3 | 16.8 | 22.6 | 16.3 | 16.3 | 15 | 12.3 | 17.1 | 24.1 | 24.6 | 22.2 | 20.3 | — | — | — | — | — | — | — | — | — | — | 16.5 | 17.4 | 18.1 | 15.4 | 17.6 | 21.5 | — | — | 13.2 | 18.3 | 21.7 | 21 | 21.9 | 20.3 | 27.8 |
| PM10 µg/m³ | 26.4 | 32.1 | 35.9 | 32.5 | 31.6 | 23.7 | 32.6 | 38.5 | 30.1 | 25.4 | 23 | 17.4 | 27.4 | 36.1 | 38.6 | 36.5 | 38.7 | — | — | — | — | — | — | — | — | — | — | 31.8 | 35.5 | 39.7 | 32.8 | 36.8 | 40.6 | — | — | 20.8 | 32.9 | 39.4 | 45.5 | 39.6 | 37 | 45.3 |
| O₃ (ppm) | 0.0334 | 0.0402 | 0.0345 | 0.0323 | 0.0304 | 0.0273 | 0.0369 | 0.0417 | 0.037 | 0.0298 | 0.0269 | 0.0262 | 0.0294 | 0.0334 | 0.0335 | 0.0274 | 0.0259 | — | — | — | — | — | — | — | — | — | — | 0.0289 | 0.0248 | 0.0302 | 0.0287 | 0.0385 | 0.0399 | — | — | 0.026 | 0.0355 | 0.0393 | 0.0376 | 0.0325 | 0.0276 | 0.0274 |
| NO₂ (ppm) | 0.00842 | 0.0106 | 0.0115 | 0.0108 | 0.0112 | 0.011 | 0.00937 | 0.00855 | 0.00737 | 0.00687 | 0.00603 | 0.00643 | 0.00977 | 0.0112 | 0.0135 | 0.0121 | 0.0148 | — | — | — | — | — | — | — | — | — | — | 0.0102 | 0.0125 | 0.0106 | 0.0102 | 0.00797 | 0.0105 | — | — | 0.0075 | 0.0104 | 0.0116 | 0.0131 | 0.0116 | 0.0108 | 0.0124 |
| SO₂ (ppm) | 0.00217 | 0.00164 | 0.00171 | 0.00152 | 0.00158 | 0.00177 | 0.00172 | 0.00174 | 0.00162 | 0.00184 | 0.00168 | 0.00183 | 0.00165 | 0.00231 | 0.00207 | 0.00189 | 0.00193 | — | — | — | — | — | — | — | — | — | — | 0.0016 | 0.00253 | 0.00207 | 0.0021 | 0.00213 | 0.00284 | — | — | 0.004 | 0.00326 | 0.00303 | 0.0025 | 0.00254 | 0.00226 | 0.00267 |
| CO (ppm) | 0.334 | 0.354 | 0.397 | 0.367 | 0.435 | 0.344 | 0.281 | 0.319 | 0.259 | 0.24 | 0.228 | 0.292 | 0.339 | 0.485 | 0.441 | 0.415 | 0.453 | — | — | — | — | — | — | — | — | — | — | 0.392 | 0.381 | 0.364 | 0.316 | 0.286 | 0.326 | — | — | 0.347 | 0.399 | 0.442 | 0.428 | 0.347 | 0.378 | 0.434 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
How should I interpret the data and averaging period? →
OpenAQ ↗Taiwan
AIR QUALITY ARCHIVE · Shalu
Shalu
Station code: Shalu
Monthly monitoring station data.
PM2.5Lowest 5.75 2019-07Highest 28.8 2017-042016-12 - 2020-05
PM10Lowest 12.5 2019-06Highest 57.6 2016-122016-12 - 2020-05
O₃ (ppm)Lowest 0.0226 2019-07Highest 0.0442 2019-102016-12 - 2020-05
NO₂ (ppm)Lowest 0.00842 2019-07Highest 0.0166 2017-032016-12 - 2020-05
SO₂ (ppm)Lowest 0.00179 2019-02Highest 0.00342 2017-092016-12 - 2020-05
CO (ppm)Lowest 0.205 2019-07Highest 0.438 2020-012016-12 - 2020-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 µg/m³ | 13.6 | 19.8 | 21.1 | 21.9 | 21.9 | 16.3 | 18.1 | 24.6 | 15.2 | 12.7 | 5.75 | 5.87 | 12.5 | 15.8 | 21.7 | 21.6 | 21.8 | — | — | — | — | — | — | — | — | — | — | 25.8 | 17.3 | 21.9 | 14.1 | 17.2 | 21.8 | — | — | 15.3 | 21.6 | 28.8 | 28.6 | 23.4 | 21.3 | 25.6 |
| PM10 µg/m³ | 24.2 | 34.2 | 38.1 | 39.1 | 37.1 | 30.1 | 38.1 | 42.6 | 29.3 | 25.7 | 21.9 | 12.5 | 30.2 | 31.7 | 40.7 | 38.4 | 42.9 | — | — | — | — | — | — | — | — | — | — | 50.2 | 38.9 | 47.9 | 39.3 | 41.6 | 44.3 | — | — | 22.2 | 37.2 | 47.1 | 54.3 | 47.2 | 48.5 | 57.6 |
| O₃ (ppm) | 0.029 | 0.0415 | 0.0369 | 0.0342 | 0.0321 | 0.0298 | 0.0383 | 0.0442 | 0.0386 | 0.0286 | 0.0226 | 0.0234 | 0.0366 | 0.034 | 0.0363 | 0.032 | 0.0314 | — | — | — | — | — | — | — | — | — | — | 0.0337 | 0.0285 | 0.0317 | 0.0314 | 0.0392 | 0.0343 | — | — | 0.0241 | 0.035 | 0.0398 | 0.0394 | 0.0356 | 0.0312 | 0.0265 |
| NO₂ (ppm) | 0.00892 | 0.0136 | 0.0136 | 0.0152 | 0.0147 | 0.0137 | 0.012 | 0.0115 | 0.0093 | 0.00958 | 0.00842 | 0.0108 | 0.0132 | 0.0132 | 0.0151 | 0.0125 | 0.0148 | — | — | — | — | — | — | — | — | — | — | 0.0136 | 0.0142 | 0.0147 | 0.0128 | 0.0118 | 0.0143 | — | — | 0.0111 | 0.0155 | 0.0159 | 0.0166 | 0.0135 | 0.013 | 0.0158 |
| SO₂ (ppm) | 0.0025 | 0.0019 | 0.00203 | 0.00193 | 0.00184 | 0.00197 | 0.00197 | 0.00219 | 0.00217 | 0.00261 | 0.00235 | 0.00223 | 0.00241 | 0.0021 | 0.002 | 0.00179 | 0.00203 | — | — | — | — | — | — | — | — | — | — | 0.00181 | 0.00197 | 0.0024 | 0.0022 | 0.00252 | 0.00342 | — | — | 0.003 | 0.00326 | 0.003 | 0.00242 | 0.00207 | 0.002 | 0.00233 |
| CO (ppm) | 0.243 | 0.347 | 0.364 | 0.383 | 0.438 | 0.331 | 0.29 | 0.315 | 0.231 | 0.251 | 0.205 | 0.253 | 0.336 | 0.357 | 0.417 | 0.398 | 0.416 | — | — | — | — | — | — | — | — | — | — | 0.386 | 0.389 | 0.372 | 0.307 | 0.292 | 0.317 | — | — | 0.313 | 0.352 | 0.387 | 0.397 | 0.357 | 0.356 | 0.406 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
How should I interpret the data and averaging period? →
OpenAQ ↗Taiwan
AIR QUALITY ARCHIVE · Xitun
Xitun
Station code: Xitun
Monthly monitoring station data.
PM2.5Lowest 11.1 2017-06Highest 31.5 2016-122016-12 - 2020-05
PM10Lowest 20.9 2019-06Highest 60.8 2016-122016-12 - 2020-05
O₃ (ppm)Lowest 0.0213 2019-06Highest 0.0427 2017-102016-12 - 2020-05
NO₂ (ppm)Lowest 0.00908 2020-05Highest 0.0191 2017-032016-12 - 2020-05
SO₂ (ppm)Lowest 0.00179 2019-02Highest 0.0041 2017-042016-12 - 2020-05
CO (ppm)Lowest 0.21 2019-07Highest 0.479 2020-012016-12 - 2020-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 µg/m³ | 13.9 | 20.5 | 21.8 | 23.5 | 23.9 | 17.2 | 17.5 | 23.8 | 15.5 | 14 | 11.5 | 11.1 | 19.8 | 24.8 | 25.2 | 23 | 22.9 | — | — | — | — | — | — | — | — | — | — | 25.1 | 20.2 | 25.1 | 18.3 | 20.1 | 25.1 | — | — | 11.1 | 20.9 | 26.9 | 29.1 | 26.7 | 24.3 | 31.5 |
| PM10 µg/m³ | 26.9 | 36.2 | 40.3 | 39.9 | 43.1 | 36.6 | 35.9 | 42.2 | 30.2 | 25.8 | 24.3 | 20.9 | 37.6 | 42 | 50.1 | 46.7 | 49.3 | — | — | — | — | — | — | — | — | — | — | 49.6 | 43.6 | 52.2 | 43.7 | 49.3 | 51.6 | — | — | 31.6 | 44.8 | 50.3 | 56.4 | 57.2 | 48.5 | 60.8 |
| O₃ (ppm) | 0.0318 | 0.0412 | 0.0358 | 0.0326 | 0.03 | 0.0274 | 0.0373 | 0.0427 | 0.0378 | 0.0269 | 0.0218 | 0.0213 | 0.0323 | 0.0321 | 0.0337 | 0.0299 | 0.0282 | — | — | — | — | — | — | — | — | — | — | 0.0338 | 0.0281 | 0.033 | 0.0333 | 0.0427 | 0.0331 | — | — | 0.0223 | 0.0342 | 0.0366 | 0.0366 | 0.0343 | 0.0304 | 0.0263 |
| NO₂ (ppm) | 0.00908 | 0.0147 | 0.0152 | 0.0161 | 0.0165 | 0.0153 | 0.0127 | 0.0128 | 0.0103 | 0.0114 | 0.00981 | 0.0116 | 0.0142 | 0.0139 | 0.0166 | 0.0146 | 0.0169 | — | — | — | — | — | — | — | — | — | — | 0.0156 | 0.0174 | 0.0169 | 0.0144 | 0.0124 | 0.016 | — | — | 0.0121 | 0.0162 | 0.0174 | 0.0191 | 0.0151 | 0.0142 | 0.0168 |
| SO₂ (ppm) | 0.00233 | 0.00193 | 0.00184 | 0.002 | 0.0019 | 0.00203 | 0.0024 | 0.00216 | 0.00207 | 0.00184 | 0.00194 | 0.0021 | 0.00214 | 0.00217 | 0.00197 | 0.00179 | 0.002 | — | — | — | — | — | — | — | — | — | — | 0.00205 | 0.00227 | 0.00257 | 0.00223 | 0.00252 | 0.00395 | — | — | 0.00286 | 0.00281 | 0.0041 | 0.00265 | 0.00232 | 0.00184 | 0.00217 |
| CO (ppm) | 0.234 | 0.362 | 0.38 | 0.411 | 0.479 | 0.377 | 0.303 | 0.337 | 0.27 | 0.274 | 0.21 | 0.26 | 0.364 | 0.366 | 0.427 | 0.422 | 0.437 | — | — | — | — | — | — | — | — | — | — | 0.425 | 0.42 | 0.406 | 0.329 | 0.314 | 0.33 | — | — | 0.247 | 0.331 | 0.362 | 0.408 | 0.356 | 0.359 | 0.409 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
How should I interpret the data and averaging period? →
OpenAQ ↗Taiwan
AIR QUALITY ARCHIVE · Zhongming
Zhongming
Station code: Zhongming
Monthly monitoring station data.
PM2.5Lowest 11.9 2019-06Highest 26.6 2017-092017-09 - 2020-05
PM10Lowest 10.5 2019-06Highest 43.3 2017-122017-09 - 2020-05
O₃ (ppm)Lowest 0.0208 2019-06Highest 0.041 2019-102017-09 - 2020-05
NO₂ (ppm)Lowest 0.00942 2020-05Highest 0.0208 2018-012017-09 - 2020-05
SO₂ (ppm)Lowest 0.00157 2019-02Highest 0.00337 2017-092017-09 - 2020-05
CO (ppm)Lowest 0.244 2019-07Highest 0.544 2020-012017-09 - 2020-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 2020-05 | 2020-04 | 2020-03 | 2020-02 | 2020-01 | 2019-12 | 2019-11 | 2019-10 | 2019-09 | 2019-08 | 2019-07 | 2019-06 | 2019-05 | 2019-04 | 2019-03 | 2019-02 | 2019-01 | 2018-12 | 2018-11 | 2018-10 | 2018-09 | 2018-08 | 2018-07 | 2018-06 | 2018-05 | 2018-04 | 2018-03 | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 µg/m³ | 14.5 | 21.2 | 22.5 | 24.5 | 25.3 | 18.4 | 19.7 | 25.8 | 17.6 | 16.4 | 14.1 | 11.9 | 19.6 | 21.3 | 25.4 | 23.5 | 23.3 | — | — | — | — | — | — | — | — | — | — | 24.3 | 20 | 24.9 | 19.2 | 21.1 | 26.6 |
| PM10 µg/m³ | 26 | 35.2 | 38.5 | 39.6 | 39.6 | 30.8 | 35.8 | 42 | 29.2 | 24.5 | 20.3 | 10.5 | 26.6 | 32 | 38.6 | 36.4 | 40.7 | — | — | — | — | — | — | — | — | — | — | 41.4 | 37 | 43.3 | 34.7 | 36.5 | 41.1 |
| O₃ (ppm) | 0.0275 | 0.0344 | 0.0307 | 0.0283 | 0.0266 | 0.0241 | 0.0343 | 0.041 | 0.0362 | 0.0265 | 0.0219 | 0.0208 | 0.0292 | 0.03 | 0.0282 | 0.0227 | 0.0246 | — | — | — | — | — | — | — | — | — | — | 0.0253 | 0.0217 | 0.0258 | 0.0266 | 0.0362 | 0.0353 |
| NO₂ (ppm) | 0.00942 | 0.0159 | 0.0166 | 0.0186 | 0.0192 | 0.0185 | 0.0159 | 0.0149 | 0.0122 | 0.0108 | 0.00952 | 0.0118 | 0.0164 | 0.0153 | 0.0205 | 0.0178 | 0.0202 | — | — | — | — | — | — | — | — | — | — | 0.0202 | 0.0208 | 0.0206 | 0.0171 | 0.0153 | 0.0166 |
| SO₂ (ppm) | 0.002 | 0.00213 | 0.00232 | 0.00262 | 0.00261 | 0.00248 | 0.00247 | 0.00242 | 0.00247 | 0.00261 | 0.00239 | 0.00213 | 0.00236 | 0.00243 | 0.00213 | 0.00157 | 0.00186 | — | — | — | — | — | — | — | — | — | — | 0.0019 | 0.00227 | 0.00243 | 0.00213 | 0.00255 | 0.00337 |
| CO (ppm) | 0.268 | 0.403 | 0.425 | 0.467 | 0.544 | 0.447 | 0.356 | 0.381 | 0.301 | 0.305 | 0.244 | 0.309 | 0.419 | 0.425 | 0.517 | 0.494 | 0.524 | — | — | — | — | — | — | — | — | — | — | 0.516 | 0.5 | 0.494 | 0.401 | 0.371 | 0.399 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
How should I interpret the data and averaging period? →
OpenAQ ↗Taiwan
Environment and quality of life ratings · Taichung City
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | Taichung City | Hong Kong | Macau | Mexico | Philippines | South Korea |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 38% | 52% | — | 56% | 45% | 61% |
| particulate matter PM2.5 (µg/m³) | 32 | — | — | — | — | — |
| Pleasure of spending time in the city | 28% | 43% | — | 57% | 39% | 43% |
| particulate matter PM10 (µg/m³) | 48 | — | — | — | — | — |
| Air Pollution | 81% | 67% | — | 53% | 64% | 69% |
| Garbage Disposal | 48% | 52% | — | 52% | 35% | 62% |
| Availability and quality of drinking water | 33% | 66% | — | 57% | 54% | 72% |
| Cleanliness and tidiness | 40% | 54% | — | 45% | 38% | 63% |
| Noise and Light pollution | 71% | 66% | — | 48% | 60% | 50% |
| Water Pollution | 77% | 53% | — | 55% | 74% | 38% |
Air quality in nearby cities
All cities →Taiwan↗
Nantou
PM2.516.4
PM1017.2
µg/m³
PM2.5 · ModerateNO₂ 26.6O₃ 42
November 11, 202610:00
Taiwan↗
Douliu
PM2.513.8
PM1015.6
µg/m³
PM2.5 · FairNO₂ 28.5O₃ 49
November 11, 202610:00
Taiwan↗
Hsinchu
PM2.513.2
PM1019
µg/m³
PM2.5 · FairNO₂ 17.3O₃ 81
November 11, 202610:00
Taiwan↗
Hualian
PM2.59.6
PM1014.8
µg/m³
PM2.5 · FairNO₂ 5.3O₃ 92
November 11, 202610:00
Taiwan↗
Taoyuan
PM2.510.6
PM1014.2
µg/m³
PM2.5 · FairNO₂ 19.3O₃ 69
November 11, 202610:00
Taiwan↗
Taipei
PM2.516.5
PM1025.6
µg/m³
PM2.5 · ModerateNO₂ 12.2O₃ 89
November 11, 202610:00
Taiwan↗
Tainan
PM2.520.1
PM1023.9
µg/m³
PM2.5 · ModerateNO₂ 39.4O₃ 39
November 11, 202610:00
Taiwan↗
Keelung
PM2.516.5
PM1025.6
µg/m³
PM2.5 · ModerateNO₂ 12.2O₃ 89
November 11, 202610:00
Taiwan · air quality in other cities
WEATHER & SURROUNDINGS
Taiwan · weather forecast
Daily maximum and minimum temperatures. Forecast point: 23.6978, 120.9605. Forecast for a country reference point; conditions in the city may differ.
Scroll the forecast to see the following days.
Taiwan · November 9, 2026: minimum temperature 3.3°C, maximum 12.2°C. Wind: 12.3 km/h. Humidity: 57%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-11-09 | 11 | 3.3 | 12.2 | 4.1 | 0.9 | 3.4 | 57 | 2 |
| 2026-11-10 | 6 | 1.5 | 7.6 | 2.8 | 0.1 | 4.1 | 64 | 26 |
| 2026-11-11 | 10.8 | 2.2 | 11.1 | 4.3 | 0.2 | 3.9 | 49 | 71 |
| 2026-11-12 | 13.2 | 2.9 | 13.2 | 5.4 | 0.1 | 3.8 | 47 | 84 |
| 2026-11-13 | 13.6 | 4.4 | 13.6 | 6.8 | 8.2 | 3.5 | 49 | 2 |
| 2026-11-14 | 11.5 | 5.4 | 11.5 | 6.2 | 4.3 | 3.2 | 58 | 96 |
| 2026-11-15 | 12.2 | 5 | 12.2 | 5 | 0.1 | 3.4 | 64 | 69 |
| 2026-11-16 | 12.5 | 4.2 | 12.5 | 4.7 | 2.9 | 3.6 | 57 | 5 |
| 2026-11-17 | 12.4 | 4.3 | 12.4 | 5.4 | 0.9 | 3.6 | 58 | 51 |
| 2026-11-18 | 13.8 | 4.7 | 13.8 | 6.4 | 2.6 | 3.1 | 53 | 31 |
| 2026-11-19 | 8.8 | 5 | 8.8 | 6.3 | 1 | 1.9 | 78 | 100 |
| 2026-11-20 | 6.2 | 4.1 | 6.4 | 4.6 | 7.4 | 2.3 | 98 | 100 |
| 2026-11-21 | 10.4 | 1.2 | 10.4 | 1.2 | 1.7 | 4 | 50 | 40 |
| 2026-11-22 | 11.8 | 1.2 | 11.8 | 4.9 | 5.5 | 3.9 | 35 | 5 |
| 2026-11-23 | 8.9 | 4.6 | 9.3 | 5.5 | 2.7 | 2.2 | 79 | 97 |
| 2026-11-24 | 10.8 | 4.4 | 10.8 | 4.4 | 17.1 | 2.4 | 74 | 66 |
| 2026-11-25 | 10.4 | 3.2 | 10.4 | 3.9 | 1.1 | 3.4 | 66 | 47 |
UV index by day · Taiwan
Data for a country reference point. Local conditions may differ.
SPF 30-50, hat and sunglasses are a must. Better to stay in the shade 11:00-15:00.
0-2 low3-5 moderate6-7 high8-10 very high11+ extreme
Scroll the forecast to see the following days.
Taiwan · November 10, 2026: UV index: 6.9 .
| Indicator | 2026-11-10 | 2026-11-11 | 2026-11-12 | 2026-11-13 | 2026-11-14 | 2026-11-15 | 2026-11-16 | 2026-11-17 | 2026-11-18 | 2026-11-19 | 2026-11-20 | 2026-11-21 | 2026-11-22 | 2026-11-23 | 2026-11-24 | 2026-11-25 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index | 6.9 | 6.8 | 6.8 | 6.8 | 6.6 | 6.2 | 6.8 | 6.2 | 5.2 | 2.3 | 0.8 | 6.6 | 4.6 | 2.6 | 4 | — |
AIR QUALITY QUESTIONS
Taichung City · air pollution - questions and answers
What do the latest air quality data show for Taichung City?
Taichung City - latest available concentrations (November 11, 2026, 10:00 local time): PM2.5: 16.4 µg/m³, PM10: 17.2 µg/m³, O₃: 42 µg/m³, NO₂: 26.6 µg/m³, SO₂: 40.3 µg/m³, CO: 518 µg/m³. These are hourly CAMS model values for a point representing the city.
When was PM2.5 highest in Taichung City over the past week?
The highest available daily mean PM2.5 was 51.3 µg/m³ (November 4, 2026). This comparison covers 7 days with data in the seven days before November 11, 2026. The day of the latest reading is excluded because it may be incomplete.
What period does the pollution history for Taichung City cover?
Available monthly means cover 2016-12 - 2020-05. The tables include PM2.5, PM10, O₃ (ppm), NO₂ (ppm), SO₂ (ppm), CO (ppm). Missing values are marked with a dash, not treated as zero. Monthly archives and current model data may come from different sources.
Is the PM2.5 concentration for Taichung City an AQI score?
No. PM2.5 and PM10 are concentrations in µg/m³. AQI is a separate index calculated using a defined scale. When comparing air quality, also check other pollutants, the date and the averaging period.
What UV index does the available forecast show for Taichung City?
For November 10, 2026, the forecast UV index is 6.9. The UV section also shows the following available days. The forecast is for a country reference point (Taiwan), not the city itself.
What wind speed is forecast for Taichung City?
For November 9, 2026, forecast wind speed is 12.3 km/h. The weather table includes wind, temperature and other available parameters for subsequent days. These data describe a country reference point (Taiwan); local wind may differ.
PM2.5 · PM10 · NO₂ · O₃
Understanding air quality and pollution data
What do PM2.5 and PM10 mean?
PM2.5 and PM10 are fractions of airborne particulate matter. PM2.5 covers fine particles up to 2.5 micrometres in diameter, while PM10 covers particles up to 10 micrometres. Concentrations in µg/m³ tell you how many micrograms of particles are present in a cubic metre of air. Compare values over the same time period.
Where does the air pollution data come from?
The latest concentrations come from the CAMS atmospheric model via Open-Meteo for each city’s coordinates. Values describe a model area, so conditions on individual streets may differ. Historical monitoring station data is shown separately where available.
How does PM2.5 concentration differ from AQI?
PM2.5 is the concentration of one particle fraction, expressed in µg/m³. AQI is an index calculated using a particular scale and thresholds. The pollutant cards show concentrations. Our city ranking compares PM2.5; PM10, ozone, nitrogen dioxide and other available gases add to the picture of air quality.
Which dates do the values and charts cover?
Each current value has a data date and time. Current concentration cards show the latest available hour, daily charts summarise individual days, and monthly records let you compare longer periods. These values represent different time intervals.
How can I check pollution in my city?
Search for your city and open its air quality page. Start with PM2.5 and PM10, then check the other available pollutants and the data timestamp. Charts and tables help you compare concentrations over time. Weather and historical climate information complement the pollution data.