Fine particles
39.6µg/m³Moderate · 1 hourCAMS model • Open-Meteo
Naucalpan de Juárez MunicipalityAir 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.
Naucalpan de Juárez Municipality - latest available concentrations (November 10, 2026, 20:00 local time): PM2.5: 39.6 µg/m³, PM10: 39.9 µg/m³, O₃: 30 µg/m³, NO₂: 92.1 µg/m³, SO₂: 37.2 µg/m³, CO: 377 µg/m³. These are hourly CAMS model values for a point representing the city.
Air quality questions →
1 weather warning in effect for Mexico
Naucalpan de Juárez Municipality · Air pollutant concentrations
Data time: November 10, 2026 · 20:00 · local timeParticulate matter
39.9µg/m³Fair · 1 hourOzone
30µg/m³Good · 1 hourNitrogen dioxide
92.1µg/m³Poor · 1 hourSulphur dioxide
37.2µg/m³Fair · 1 hourCarbon monoxide
377µg/m³PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
DAILY DATA · Naucalpan de Juárez Municipality
Naucalpan de Juárez Municipality - air pollution over recent days (2026-08-30 - 2026-11-09)
Concentrations of all available pollutants for this city.
PM2.5Lowest 19.68 2026-11-04Highest 36.25 2026-11-092026-08-30 - 2026-11-09
PM10Lowest 20.03 2026-11-04Highest 37.03 2026-09-052026-08-30 - 2026-11-09
O₃Lowest 42.5 2026-11-03Highest 84.46 2026-09-032026-08-30 - 2026-11-09
NO₂Lowest 28.13 2026-11-08Highest 64.7 2026-09-022026-08-30 - 2026-11-09
SO₂Lowest 19.62 2026-11-07Highest 33.95 2026-11-092026-08-30 - 2026-11-09
COLowest 346.5 2026-11-08Highest 1,063.17 2026-09-012026-08-30 - 2026-11-09
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-11-09 | 2026-11-08 | 2026-11-07 | 2026-11-06 | 2026-11-05 | 2026-11-04 | 2026-11-03 | 2026-09-06 | 2026-09-05 | 2026-09-04 | 2026-09-03 | 2026-09-02 | 2026-09-01 | 2026-08-31 | 2026-08-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 36.25 | 21.73 | 24.1 | 21.14 | 27.85 | 19.68 | 24.86 | 32.49 | 35.9 | 28.7 | 31.15 | 33.07 | 26.96 | 25.14 | 29.07 |
| PM10 | 36.86 | 22.15 | 24.49 | 21.25 | 28.18 | 20.03 | 24.97 | 33.1 | 37.03 | 29.43 | 31.8 | 34.04 | 28.48 | 27.52 | 33.92 |
| O₃ | 62.17 | 66.08 | 59.29 | 61.71 | 64.54 | 46.13 | 42.5 | 79.67 | 80.04 | 76.29 | 84.46 | 76.79 | 66.79 | 58.58 | 79.33 |
| NO₂ | 49.31 | 28.13 | 29.35 | 44.82 | 47.41 | 42.29 | 44.93 | 45.89 | 43.08 | 50.38 | 52.31 | 64.7 | 58.53 | 48.98 | 35.79 |
| SO₂ | 33.95 | 21.7 | 19.62 | 23.56 | 26.6 | 25.29 | 30.64 | 29.96 | 23.03 | 24.44 | 24.02 | 28.97 | 26.48 | 23.28 | 21.61 |
| CO | 567.83 | 346.5 | 351.33 | 672.13 | 692.42 | 451.96 | 574.63 | 485.83 | 365.67 | 549.17 | 896.75 | 857.25 | 1,063.17 | 839.83 | 448.58 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
AIR QUALITY ARCHIVE · Naucalpan de Juárez Municipality
Naucalpan de Juárez Municipality - air pollution history (2016-03 - 2020-05)
Compare monthly particle and gas concentrations in the available archive.
PM10Lowest 18.7 2016-09Highest 72.4 2019-042016-03 - 2020-05
O₃ (ppm)Lowest 0.0218 2016-11Highest 0.068 2019-042016-03 - 2020-05
NO₂ (ppm)Lowest 0.0138 2020-05Highest 0.049 2016-032016-03 - 2020-05
SO₂ (ppm)Lowest 0.002 2018-10Highest 0.0158 2017-122016-03 - 2020-05
CO (ppm)Lowest 0.483 2020-05Highest 1.28 2016-032016-03 - 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 | 2016-11 | 2016-10 | 2016-09 | 2016-08 | 2016-07 | 2016-06 | 2016-05 | 2016-04 | 2016-03 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 µg/m³ | 32.5 | 35.1 | — | — | — | — | — | 21.5 | 24.9 | 25.3 | 24.6 | 26 | 55.5 | 72.4 | — | — | — | 38.3 | 35.8 | 21.6 | 25.3 | 24.9 | 33.6 | 28.8 | 30.1 | 33.7 | 42.6 | 40.1 | — | 36.7 | 29.9 | 27.6 | 27.2 | 25.4 | 24.7 | 30.7 | 53.4 | 46.8 | 43.7 | 54 | 55.8 | 41.1 | 34.1 | 25 | 18.7 | 24.4 | 27.1 | 29.2 | 45.4 | 52.8 | — |
| O₃ (ppm) | 0.0402 | 0.0433 | — | — | — | — | — | 0.0249 | 0.0333 | 0.0337 | 0.0321 | 0.0324 | 0.045 | 0.068 | — | — | — | 0.0274 | 0.0269 | 0.0244 | 0.0287 | 0.0312 | 0.0336 | 0.0325 | 0.0335 | 0.0335 | 0.0432 | 0.0302 | — | 0.028 | 0.0258 | 0.0315 | 0.0292 | 0.0283 | 0.025 | 0.0335 | 0.0444 | 0.0371 | 0.0326 | 0.0334 | 0.033 | 0.026 | 0.0218 | 0.026 | 0.0256 | 0.0325 | 0.0308 | 0.0331 | 0.0425 | 0.0403 | 0.0283 |
| NO₂ (ppm) | 0.0138 | 0.0158 | — | — | — | — | — | 0.017 | 0.0173 | 0.0191 | 0.019 | 0.019 | 0.0234 | 0.0258 | — | — | — | 0.0304 | 0.0315 | 0.0202 | 0.0226 | 0.0221 | 0.0191 | 0.023 | 0.0219 | 0.0281 | 0.0258 | 0.0274 | — | 0.0406 | 0.0272 | 0.0209 | 0.0187 | 0.02 | 0.0215 | 0.0189 | 0.0272 | 0.0238 | 0.0258 | 0.029 | 0.0359 | 0.0262 | 0.0238 | 0.0178 | 0.0211 | 0.0241 | 0.0229 | 0.026 | 0.0306 | 0.0339 | 0.049 |
| SO₂ (ppm) | 0.002 | 0.00288 | — | — | — | — | — | 0.00367 | 0.00267 | 0.00478 | 0.00352 | 0.00324 | 0.00475 | — | — | — | — | 0.00881 | 0.00429 | 0.002 | 0.00454 | 0.00378 | 0.00487 | 0.00454 | 0.00811 | 0.00215 | 0.00613 | 0.00685 | — | 0.0158 | 0.013 | 0.00446 | 0.00615 | 0.00518 | 0.00365 | 0.00357 | 0.0043 | 0.00304 | 0.00574 | 0.00696 | 0.0107 | 0.00584 | 0.00627 | 0.00452 | 0.00448 | 0.005 | 0.0049 | 0.0045 | 0.00397 | 0.00435 | 0.00475 |
| CO (ppm) | 0.483 | 0.486 | — | — | — | — | — | 0.6 | 0.612 | 0.687 | 0.589 | 0.571 | 0.756 | 0.653 | — | — | — | 0.877 | 0.993 | 0.622 | 0.761 | 0.715 | 0.529 | 0.673 | 0.555 | 0.665 | 0.672 | 0.688 | — | 0.797 | 0.66 | 0.581 | 0.585 | 0.685 | 0.741 | 0.583 | 0.642 | 0.745 | 0.885 | 0.902 | 0.965 | 0.844 | 0.861 | 0.594 | 0.547 | 0.69 | 0.728 | 0.951 | 0.985 | 0.927 | 1.28 |
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 2
AIR QUALITY ARCHIVE · FES Acatl��n
FES Acatl��n
Station code: FES Acatlán
Monthly monitoring station data.
PM10Lowest 21.5 2019-10Highest 72.4 2019-042017-06 - 2020-05
O₃ (ppm)Lowest 0.0244 2018-10Highest 0.068 2019-042017-06 - 2020-05
NO₂ (ppm)Lowest 0.0138 2020-05Highest 0.0406 2017-122017-06 - 2020-05
SO₂ (ppm)Lowest 0.002 2018-10Highest 0.0158 2017-122017-06 - 2020-05
CO (ppm)Lowest 0.483 2020-05Highest 0.993 2018-112017-06 - 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 µg/m³ | 32.5 | 35.1 | — | — | — | — | — | 21.5 | 24.9 | 25.3 | 24.6 | 26 | 55.5 | 72.4 | — | — | — | 38.3 | 35.8 | 21.6 | 25.3 | 24.9 | 33.6 | 28.8 | 30.1 | 33.7 | 42.6 | 40.1 | — | 36.7 | 29.9 | 27.6 | 27.2 | 25.4 | 24.7 | 30.7 |
| O₃ (ppm) | 0.0402 | 0.0433 | — | — | — | — | — | 0.0249 | 0.0333 | 0.0337 | 0.0321 | 0.0324 | 0.045 | 0.068 | — | — | — | 0.0274 | 0.0269 | 0.0244 | 0.0287 | 0.0312 | 0.0336 | 0.0325 | 0.0335 | 0.0335 | 0.0432 | 0.0302 | — | 0.028 | 0.0258 | 0.0315 | 0.0292 | 0.0283 | 0.025 | 0.0335 |
| NO₂ (ppm) | 0.0138 | 0.0158 | — | — | — | — | — | 0.017 | 0.0173 | 0.0191 | 0.019 | 0.019 | 0.0234 | 0.0258 | — | — | — | 0.0304 | 0.0315 | 0.0202 | 0.0226 | 0.0221 | 0.0191 | 0.023 | 0.0219 | 0.0281 | 0.0258 | 0.0274 | — | 0.0406 | 0.0272 | 0.0209 | 0.0187 | 0.02 | 0.0215 | 0.0189 |
| SO₂ (ppm) | 0.002 | 0.00288 | — | — | — | — | — | 0.00367 | 0.00267 | 0.00478 | 0.00352 | 0.00324 | 0.00475 | — | — | — | — | 0.00881 | 0.00429 | 0.002 | 0.00454 | 0.00378 | 0.00487 | 0.00454 | 0.00811 | 0.00215 | 0.00613 | 0.00685 | — | 0.0158 | 0.013 | 0.00446 | 0.00615 | 0.00518 | 0.00365 | 0.00357 |
| CO (ppm) | 0.483 | 0.486 | — | — | — | — | — | 0.6 | 0.612 | 0.687 | 0.589 | 0.571 | 0.756 | 0.653 | — | — | — | 0.877 | 0.993 | 0.622 | 0.761 | 0.715 | 0.529 | 0.673 | 0.555 | 0.665 | 0.672 | 0.688 | — | 0.797 | 0.66 | 0.581 | 0.585 | 0.685 | 0.741 | 0.583 |
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 ↗AirNow
AIR QUALITY ARCHIVE · FES Acatl�n
FES Acatl�n
Station code: FES Acatl�n
Monthly monitoring station data.
PM10Lowest 18.7 2016-09Highest 55.8 2017-012016-03 - 2017-05
O₃ (ppm)Lowest 0.0218 2016-11Highest 0.0444 2017-052016-03 - 2017-05
NO₂ (ppm)Lowest 0.0178 2016-10Highest 0.049 2016-032016-03 - 2017-05
SO₂ (ppm)Lowest 0.00304 2017-04Highest 0.0107 2017-012016-03 - 2017-05
CO (ppm)Lowest 0.547 2016-09Highest 1.28 2016-032016-03 - 2017-05
Scroll the chart or table sideways to see the full period.
| Pollutant | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 | 2016-11 | 2016-10 | 2016-09 | 2016-08 | 2016-07 | 2016-06 | 2016-05 | 2016-04 | 2016-03 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 µg/m³ | 53.4 | 46.8 | 43.7 | 54 | 55.8 | 41.1 | 34.1 | 25 | 18.7 | 24.4 | 27.1 | 29.2 | 45.4 | 52.8 | — |
| O₃ (ppm) | 0.0444 | 0.0371 | 0.0326 | 0.0334 | 0.033 | 0.026 | 0.0218 | 0.026 | 0.0256 | 0.0325 | 0.0308 | 0.0331 | 0.0425 | 0.0403 | 0.0283 |
| NO₂ (ppm) | 0.0272 | 0.0238 | 0.0258 | 0.029 | 0.0359 | 0.0262 | 0.0238 | 0.0178 | 0.0211 | 0.0241 | 0.0229 | 0.026 | 0.0306 | 0.0339 | 0.049 |
| SO₂ (ppm) | 0.0043 | 0.00304 | 0.00574 | 0.00696 | 0.0107 | 0.00584 | 0.00627 | 0.00452 | 0.00448 | 0.005 | 0.0049 | 0.0045 | 0.00397 | 0.00435 | 0.00475 |
| CO (ppm) | 0.642 | 0.745 | 0.885 | 0.902 | 0.965 | 0.844 | 0.861 | 0.594 | 0.547 | 0.69 | 0.728 | 0.951 | 0.985 | 0.927 | 1.28 |
A dot on the chart and a dash in the table indicate missing data. Historical values do not describe today’s air quality.
Air quality in nearby cities
All cities →Mexico↗
Mexico City
PM2.539.6
PM1039.9
µg/m³
PM2.5 · ModerateNO₂ 92.1O₃ 30
November 10, 202620:00
Mexico↗
Tlalpan
PM2.531.5
PM1032.4
µg/m³
PM2.5 · ModerateNO₂ 83.2O₃ 19
November 10, 202620:00
Mexico↗
Ecatepec de Morelos
PM2.539.6
PM1039.9
µg/m³
PM2.5 · ModerateNO₂ 92.1O₃ 30
November 10, 202620:00
Mexico↗
Ciudad Nezahualcóyotl
PM2.539.6
PM1039.9
µg/m³
PM2.5 · ModerateNO₂ 92.1O₃ 30
November 10, 202620:00
Mexico↗
Puebla City
PM2.515.4
PM1016.1
µg/m³
PM2.5 · ModerateNO₂ 30.4O₃ 58
November 10, 202620:00
Mexico↗
Querétaro City
PM2.514.6
PM1014.8
µg/m³
PM2.5 · FairNO₂ 16.2O₃ 74
November 10, 202620:00
Mexico↗
Acapulco de Juárez
PM2.512.8
PM1016.4
µg/m³
PM2.5 · FairNO₂ 4.3O₃ 105
November 10, 202620:00
Mexico↗
León
PM2.523.8
PM1024.4
µg/m³
PM2.5 · ModerateNO₂ 41.7O₃ 51
November 10, 202620:00
Mexico · air quality in other cities
WEATHER & SURROUNDINGS
Mexico · weather forecast
Daily maximum and minimum temperatures. Forecast point: 15.0646, 120.7198. Forecast for a country reference point; conditions in the city may differ.
Scroll the forecast to see the following days.
Mexico · November 9, 2026: minimum temperature 26°C, maximum 31.7°C. Wind: 22.6 km/h. Humidity: 66%.
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 | 29.5 | 26 | 31.7 | 26.9 | 2.8 | 6.3 | 66 | 46 |
| 2026-11-10 | 30 | 24.8 | 32.3 | 25.9 | 0.5 | 6.1 | 58 | 28 |
| 2026-11-11 | 30.8 | 24.3 | 32.3 | 26.5 | 0.2 | 6.2 | 55 | 65 |
| 2026-11-12 | 30.4 | 22.8 | 31.3 | 24.8 | 10.1 | 5.9 | 56 | 97 |
| 2026-11-13 | 31.4 | 23.5 | 32.4 | 24.9 | 0.2 | 6.1 | 56 | 68 |
| 2026-11-14 | 32.5 | 23.5 | 33.5 | 24.9 | 0.8 | 3.6 | 53 | 67 |
| 2026-11-15 | 32.6 | 23.5 | 34.8 | 24.4 | 3.9 | 2.7 | 54 | 16 |
| 2026-11-16 | 32.6 | 23.1 | 33.8 | 24.9 | 0.1 | 4.9 | 53 | 40 |
| 2026-11-17 | 32.5 | 23.5 | 32.8 | 23.5 | 0.9 | 4.5 | 54 | 81 |
| 2026-11-18 | 32.5 | 22.4 | 33.2 | 24.9 | 0.3 | 6.4 | 53 | 32 |
| 2026-11-19 | 32.3 | 23.3 | 32.7 | 25.3 | 0.9 | 6.3 | 49 | 26 |
| 2026-11-20 | 31.9 | 23.8 | 32.3 | 25.8 | 2.7 | 3.6 | 57 | 83 |
| 2026-11-21 | 32.5 | 24.2 | 34.9 | 25.4 | 0.6 | 3.5 | 53 | 99 |
| 2026-11-22 | 32.3 | 24.2 | 32.8 | 24.7 | 2 | 6.1 | 52 | 35 |
| 2026-11-23 | 32.8 | 23.3 | 33.7 | 24.3 | 0.9 | 6.4 | 51 | 29 |
| 2026-11-24 | 32.8 | 22.7 | 33.8 | 25.7 | — | 6 | 51 | 5 |
| 2026-11-25 | 31.9 | 23.1 | 33.6 | 24.8 | — | 4.8 | 51 | 12 |
UV index by day · Mexico
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.
Mexico · November 10, 2026: UV index: 7.4 .
| 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 | 7.4 | 6.8 | 6.2 | 7.2 | 6.8 | 8.2 | 7.4 | 5.1 | 7.2 | 7.3 | 5 | 7.7 | 5.1 | 7.2 | 7.2 | — |
AIR QUALITY QUESTIONS
Naucalpan de Juárez Municipality · air pollution - questions and answers
What do the latest air quality data show for Naucalpan de Juárez Municipality?
Naucalpan de Juárez Municipality - latest available concentrations (November 10, 2026, 20:00 local time): PM2.5: 39.6 µg/m³, PM10: 39.9 µg/m³, O₃: 30 µg/m³, NO₂: 92.1 µg/m³, SO₂: 37.2 µg/m³, CO: 377 µg/m³. These are hourly CAMS model values for a point representing the city.
When was PM2.5 highest in Naucalpan de Juárez Municipality over the past week?
The highest available daily mean PM2.5 was 36.2 µg/m³ (November 9, 2026). This comparison covers 7 days with data in the seven days before November 10, 2026. The day of the latest reading is excluded because it may be incomplete.
What period does the pollution history for Naucalpan de Juárez Municipality cover?
Available monthly means cover 2016-03 - 2020-05. The tables include 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 Naucalpan de Juárez Municipality 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 Naucalpan de Juárez Municipality?
For November 10, 2026, the forecast UV index is 7.4. The UV section also shows the following available days. The forecast is for a country reference point (Mexico), not the city itself.
What wind speed is forecast for Naucalpan de Juárez Municipality?
For November 9, 2026, forecast wind speed is 22.6 km/h. The weather table includes wind, temperature and other available parameters for subsequent days. These data describe a country reference point (Mexico); 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.