Fine particles
21.9µg/m³CAMS model • Open-Meteo
TaiwanAir quality, PM2.5 and PM10
Compare air quality across cities in this country. Explore PM2.5, PM10 and other pollutant concentrations, check data timestamps, and view recent trends and historical charts.
Taiwan - average concentrations across available points: PM2.5: 21.9 µg/m³, PM10: 23.9 µg/m³, O₃: 94.3 µg/m³, NO₂: 33.6 µg/m³, SO₂: 43.2 µg/m³, CO: 444.7 µg/m³. Date range: September 27, 2026. Each point contributes its latest available hourly value; this is not a daily or population-weighted average.
Lowest PM2.5: Taitung City (12.2 µg/m³). Highest PM2.5: Keelung, Taipei (30 µg/m³). This comparison covers 11 cities on September 27, 2026 using their latest available hourly values. Reading times may differ; this is not an annual-average ranking.
Air quality questions →All cities · Taiwan
11 citiesTaiwan↗
Taipei
PM2.530
PM1032.4
µg/m³
PM2.5 · ModerateNO₂ 52.3O₃ 81
September 27, 202609:00
Taiwan↗
Kaohsiung City
PM2.519
PM1023.3
µg/m³
PM2.5 · ModerateNO₂ 55.2O₃ 46
September 27, 202609:00
Taiwan↗
Taichung City
PM2.520.8
PM1021.4
µg/m³
PM2.5 · ModerateNO₂ 23O₃ 120
September 27, 202609:00
Taiwan↗
Tainan
PM2.519
PM1023.3
µg/m³
PM2.5 · ModerateNO₂ 55.2O₃ 46
September 27, 202609:00
Taiwan↗
Hsinchu
PM2.519.2
PM1020.3
µg/m³
PM2.5 · ModerateNO₂ 24.7O₃ 105
September 27, 202609:00
Taiwan↗
Taoyuan
PM2.521.8
PM1022.4
µg/m³
PM2.5 · ModerateNO₂ 26.3O₃ 113
September 27, 202609:00
Taiwan↗
Keelung
PM2.530
PM1032.4
µg/m³
PM2.5 · ModerateNO₂ 52.3O₃ 81
September 27, 202609:00
Taiwan↗
Hualian
PM2.528.4
PM1029.6
µg/m³
PM2.5 · ModerateNO₂ 9.1O₃ 128
September 27, 202609:00
Taiwan↗
Taitung City
PM2.512.2
PM1012.5
µg/m³
PM2.5 · FairNO₂ 13.7O₃ 108
September 27, 202609:00
Taiwan↗
Nantou
PM2.520.8
PM1021.4
µg/m³
PM2.5 · ModerateNO₂ 23O₃ 120
September 27, 202609:00
Taiwan↗
Douliu
PM2.519.9
PM1024
µg/m³
PM2.5 · ModerateNO₂ 34.9O₃ 89
September 27, 202609:00
PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
AVERAGE ACROSS AVAILABLE COUNTRY POINTS
Latest concentrations · Taiwan
Particulate matter
23.9µg/m³Ozone
94.3µg/m³Nitrogen dioxide
33.6µg/m³Sulphur dioxide
43.2µg/m³Carbon monoxide
444.7µg/m³Average of the latest available hour at each model point. This is neither a population-weighted nor a daily average.
DAILY DATA · Taiwan
Taiwan - air pollution over recent days (2026-08-31 - 2026-09-26)
Averages across available points in the country. These are not population-weighted averages.
PM2.5Lowest 11.39 2026-09-01Highest 32.54 2026-09-252026-08-31 - 2026-09-26
PM10Lowest 12.07 2026-08-31Highest 35.59 2026-09-252026-08-31 - 2026-09-26
O₃Lowest 35.48 2026-09-01Highest 90.19 2026-09-072026-08-31 - 2026-09-26
NO₂Lowest 27.34 2026-09-06Highest 46.78 2026-09-042026-08-31 - 2026-09-26
SO₂Lowest 17.18 2026-09-03Highest 35.76 2026-09-262026-08-31 - 2026-09-26
COLowest 321.42 2026-09-06Highest 709.97 2026-09-042026-08-31 - 2026-09-26
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-09-26 | 2026-09-25 | 2026-09-24 | 2026-09-23 | 2026-09-22 | 2026-09-21 | 2026-09-20 | 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 | 30.07 | 32.54 | 29.44 | 25.3 | 23.43 | 22.46 | 24.44 | 29.05 | 21.67 | 26.14 | 21.74 | 13.45 | 13.81 | 11.39 | 11.45 |
| PM10 | 31.86 | 35.59 | 33.83 | 30.12 | 28.14 | 26.52 | 28.55 | 33.59 | 25.45 | 29.52 | 23.52 | 14.96 | 15.16 | 12.32 | 12.07 |
| O₃ | 64.27 | 68.98 | 70.08 | 75.7 | 81.14 | 86.61 | 76.73 | 90.19 | 80.13 | 67.53 | 45.87 | 51.53 | 41.55 | 35.48 | 49.33 |
| NO₂ | 41.85 | 39.42 | 37.85 | 37.16 | 36.35 | 31.98 | 31.48 | 35.85 | 27.34 | 39.12 | 46.78 | 38.51 | 37.85 | 36.24 | 27.92 |
| SO₂ | 35.76 | 31.89 | 30.84 | 27.7 | 25.16 | 23.02 | 22.77 | 26.23 | 18.31 | 27.72 | 30.58 | 17.18 | 18.73 | 17.78 | 17.58 |
| CO | 522.94 | 556.56 | 550.81 | 356.71 | 372.66 | 343.62 | 332.17 | 414.83 | 321.42 | 535.83 | 709.97 | 485.42 | 401.36 | 416.09 | 325.66 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
AIR QUALITY ARCHIVE · Taiwan
Taiwan - air pollution history (2016-12 - 2020-05)
Compare monthly particle and gas concentrations in the available archive.
PM2.5Lowest 6.5 2018-08Highest 26 2017-032016-12 - 2020-05
PM10Lowest 19.5 2018-08Highest 50.3 2017-022016-12 - 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 | 12.2 | 17.9 | 19 | 19.6 | 21.2 | 16.2 | 13.8 | 18.6 | 14 | 9.89 | 9.08 | 8.8 | 14.2 | 17.5 | 19.6 | 18.2 | 22 | — | — | — | — | 6.5 | — | — | — | — | — | 24.5 | 16.3 | 18.8 | 15.9 | 15.9 | 21.3 | — | — | 9.82 | 16.9 | 23.5 | 26 | 22.7 | 21.4 | 23.8 |
| PM10 | 25.7 | 36.1 | 36.1 | 32.6 | 37.6 | 31.3 | 33.8 | 37.6 | 29 | 22.7 | 21 | 20.2 | 35.3 | 35.2 | 40.3 | 34.1 | 45.5 | — | — | — | — | 19.5 | — | — | — | — | — | 48.9 | 40.5 | 41.2 | 35.2 | 40.7 | 40.6 | — | — | 26.5 | 37.5 | 46.1 | 49.4 | 50.3 | 49 | 47.4 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
Environment and quality of life ratings · Taiwan
Archived ratings of the local environment: green spaces, cleanliness, noise and water quality. Opinion indicators are separate from pollutant concentration measurements.
| Indicator | Taiwan | Hong Kong | Macau | Mexico | Philippines | South Korea |
|---|---|---|---|---|---|---|
| Green and Parks in the City | 53% | 52% | — | 56% | 45% | 61% |
| Pleasure of spending time in the city | 47% | 43% | — | 57% | 39% | 43% |
| Air Pollution | 61% | 67% | — | 53% | 64% | 69% |
| Garbage Disposal | 65% | 52% | — | 52% | 35% | 62% |
| Availability and quality of drinking water | 54% | 66% | — | 57% | 54% | 72% |
| Cleanliness and tidiness | 56% | 54% | — | 45% | 38% | 63% |
| Noise and Light pollution | 59% | 66% | — | 48% | 60% | 50% |
| Water Pollution | 58% | 53% | — | 55% | 74% | 38% |
WEATHER & SURROUNDINGS
Taiwan · weather forecast
Daily maximum and minimum temperatures. Forecast point: 23.6978, 120.9605.
Scroll the forecast to see the following days.
Taiwan · September 25, 2026: minimum temperature 7.6°C, maximum 15°C. Wind: 13.9 km/h. Humidity: 61%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-09-25 | 14.6 | 7.6 | 15 | 9.2 | 4.6 | 3.9 | 61 | 4 |
| 2026-09-26 | 13.9 | 7.6 | 16.8 | 9.5 | 1.8 | 4 | 67 | 11 |
| 2026-09-27 | 15.9 | 7.4 | 17 | 9.7 | 0.4 | 3.9 | 56 | 58 |
| 2026-09-28 | 16.5 | 7.9 | 16.8 | 9.5 | 0.1 | 4.1 | 55 | 3 |
| 2026-09-29 | 16.4 | 8.3 | 16.4 | 8.8 | 0.2 | 3.9 | 56 | 24 |
| 2026-09-30 | 15.9 | 7.8 | 15.9 | 9 | 1.3 | 3.9 | 60 | 6 |
| 2026-10-01 | 14.9 | 8.1 | 14.9 | 9.4 | 1.4 | 3.5 | 72 | 42 |
| 2026-10-02 | 15.1 | 8.2 | 15.1 | 9.3 | 1.2 | 3.3 | 69 | 80 |
| 2026-10-03 | 16.5 | 8 | 16.5 | 9.1 | 1.4 | 3.4 | 55 | 46 |
| 2026-10-04 | 16.1 | 7.8 | 16.1 | 9.1 | 2 | 3.7 | 59 | 47 |
| 2026-10-05 | 17.6 | 7.2 | 17.6 | 8.7 | 0.8 | 3.5 | 48 | 98 |
| 2026-10-06 | 16.8 | 8.2 | 16.8 | 8.6 | 1 | 2.7 | 53 | 11 |
| 2026-10-07 | 13.8 | 6.5 | 13.8 | 6.5 | 0.4 | 3.7 | 68 | 62 |
| 2026-10-08 | 12.6 | 4.3 | 12.6 | 4.3 | 11 | 3.9 | 55 | 10 |
| 2026-10-09 | 13.2 | 3.7 | 13.2 | 4.5 | 0.4 | 3.8 | 52 | 5 |
| 2026-10-10 | 14.5 | 3.5 | 14.5 | 4.8 | 2.5 | 3.4 | 41 | 37 |
| 2026-10-11 | 14.1 | 4 | 14.1 | 6.3 | — | 3.7 | 41 | — |
UV index by day · Taiwan
Data for a country reference point. Local conditions may differ.
SPF 50, long sleeves and shade between 10:00-16:00.
0-2 low3-5 moderate6-7 high8-10 very high11+ extreme
Scroll the forecast to see the following days.
Taiwan · September 26, 2026: UV index: 8.5 .
| Indicator | 2026-09-26 | 2026-09-27 | 2026-09-28 | 2026-09-29 | 2026-09-30 | 2026-10-01 | 2026-10-02 | 2026-10-03 | 2026-10-04 | 2026-10-05 | 2026-10-06 | 2026-10-07 | 2026-10-08 | 2026-10-09 | 2026-10-10 | 2026-10-11 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index | 8.5 | 8.6 | 8.6 | 8.6 | 8.2 | 6.4 | 6.3 | 8.6 | 6.6 | 8.6 | 6.1 | 6.4 | 8.4 | 8.8 | 8.6 | — |
AIR QUALITY QUESTIONS
Taiwan · air pollution - questions and answers
What do the latest air quality data show for Taiwan?
Taiwan - average concentrations across available points: PM2.5: 21.9 µg/m³, PM10: 23.9 µg/m³, O₃: 94.3 µg/m³, NO₂: 33.6 µg/m³, SO₂: 43.2 µg/m³, CO: 444.7 µg/m³. Date range: September 27, 2026. Each point contributes its latest available hourly value; this is not a daily or population-weighted average.
When was PM2.5 highest in Taiwan over the past week?
The highest available daily mean PM2.5 was 32.5 µg/m³ (September 25, 2026). This comparison covers 7 days with data in the seven days before September 27, 2026. The day of the latest reading is excluded because it may be incomplete.
Which cities in Taiwan have the cleanest and most polluted air by PM2.5?
Lowest PM2.5: Taitung City (12.2 µg/m³). Highest PM2.5: Keelung, Taipei (30 µg/m³). This comparison covers 11 cities on September 27, 2026 using their latest available hourly values. Reading times may differ; this is not an annual-average ranking.
What period does the pollution history for Taiwan cover?
Available monthly means cover 2016-12 - 2020-05. The tables include PM2.5, PM10. 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 Taiwan 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 Taiwan?
For September 26, 2026, the forecast UV index is 8.5. The UV section also shows the following available days.
What wind speed is forecast for Taiwan?
For September 25, 2026, forecast wind speed is 13.9 km/h. The weather table includes wind, temperature and other available parameters for subsequent days.
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.