Fine particles
10.6µg/m³Fair · 1 hourCAMS model • Open-Meteo
OsloAir 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.
Oslo - latest available concentrations (September 26, 2026, 03:00 local time): PM2.5: 10.6 µg/m³, PM10: 14.7 µg/m³, O₃: 26 µg/m³, NO₂: 20.1 µg/m³, SO₂: 1.5 µg/m³, CO: 302 µg/m³. These are hourly CAMS model values for a point representing the city.
Air quality questions →
1 weather warning in effect for Norway
Oslo · Air pollutant concentrations
Data time: September 26, 2026 · 03:00 · local timeParticulate matter
14.7µg/m³Good · 1 hourOzone
26µg/m³Good · 1 hourNitrogen dioxide
20.1µg/m³Fair · 1 hourSulphur dioxide
1.5µg/m³Good · 1 hourCarbon monoxide
302µg/m³PM2.5 vs PM10 - what is the difference? → · Models and monitoring stations →
DAILY DATA · Oslo
Oslo - air pollution over recent days (2026-08-31 - 2026-09-25)
Concentrations of all available pollutants for this city.
PM2.5Lowest 1.82 2026-09-21Highest 10.49 2026-09-252026-08-31 - 2026-09-25
PM10Lowest 3.26 2026-09-21Highest 14.5 2026-09-252026-08-31 - 2026-09-25
O₃Lowest 24.38 2026-09-23Highest 64.29 2026-09-072026-08-31 - 2026-09-25
NO₂Lowest 4.03 2026-09-20Highest 25.53 2026-09-252026-08-31 - 2026-09-25
SO₂Lowest 0.31 2026-09-21Highest 2.27 2026-09-252026-08-31 - 2026-09-25
COLowest 181.17 2026-09-07Highest 346.04 2026-09-252026-08-31 - 2026-09-25
Scroll the chart or table sideways to see the full period.
| Pollutant | 2026-09-25 | 2026-09-24 | 2026-09-23 | 2026-09-22 | 2026-09-21 | 2026-09-20 | 2026-09-19 | 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 | 10.49 | 5.73 | 8.94 | 5.58 | 1.82 | 2.05 | 3.58 | 5.55 | 3.59 | 6.45 | 7.4 | 3.8 | 4.88 | 9.78 | 7.78 |
| PM10 | 14.5 | 7.63 | 14.12 | 8.72 | 3.26 | 3.34 | 5.97 | 9.27 | 5.22 | 8.24 | 10.42 | 6.73 | 7.64 | 14.32 | 10.78 |
| O₃ | 26.75 | 31.17 | 24.38 | 39.83 | 58.08 | 53.29 | 54.83 | 64.29 | 45 | 42.42 | 39.75 | 52.08 | 55 | 56.33 | 53.46 |
| NO₂ | 25.53 | 14.21 | 21.59 | 16.46 | 4.39 | 4.03 | 5.51 | 8.43 | 7.82 | 15.42 | 23 | 10.4 | 10.59 | 23.47 | 20.35 |
| SO₂ | 2.27 | 1.02 | 2.02 | 1.51 | 0.31 | 0.38 | 0.5 | 0.66 | 0.61 | 1.4 | 2.09 | 0.82 | 0.65 | 1.88 | 1.25 |
| CO | 346.04 | 256.13 | 326 | 264.29 | 192.04 | 198.17 | 195.79 | 181.17 | 189.71 | 266.83 | 280.13 | 189.33 | 187.42 | 286.88 | 267.58 |
A dot on the chart and a dash in the table indicate missing data. The latest day may be incomplete.
AIR QUALITY ARCHIVE · Oslo
Oslo - air pollution history (2016-12 - 2020-05)
Compare monthly particle and gas concentrations in the available archive.
PM2.5Lowest 3.74 2020-05Highest 14.8 2019-042016-12 - 2020-05
PM10Lowest 5.88 2017-08Highest 30.4 2019-042016-12 - 2020-05
O₃Lowest 25.6 2017-12Highest 54.2 2017-052016-12 - 2020-05
NO₂Lowest 8.09 2020-05Highest 46.27 2017-012016-12 - 2020-05
SO₂Lowest 0.94 2017-03Highest 2.11 2016-122016-12 - 2020-05
COLowest 185 2019-07Highest 978 2019-022016-12 - 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 | 3.74 | 5.45 | 8.66 | 8.91 | 8.62 | 11.7 | 6.71 | 6.07 | 4.84 | 8.57 | 5.13 | 5.99 | 4.21 | 14.8 | 5.04 | 10.05 | 13.65 | 12.55 | 10.25 | 3.75 | 4.74 | 4 | 7.26 | 4.49 | 8.07 | 7.56 | 8.2 | 12.5 | 12.7 | 13.2 | 9.04 | 4.84 | 5.26 | 4.24 | 4.2 | 3.94 | 6.09 | 4.38 | 6.22 | 11.8 | 12.5 | 13.6 |
| PM10 | 10.46 | 15.05 | 18.4 | 26.25 | 13.88 | 13.2 | 9.55 | 10.34 | 8.11 | 12.92 | 8.38 | 11.35 | 11.32 | 30.4 | 17.43 | 15.53 | 18.17 | 15.17 | 18.23 | 7.1 | 9.04 | 7.67 | 11.95 | 9.69 | 18.15 | 26.5 | 14.85 | 15.05 | 14 | 17.35 | 12.85 | 9.58 | 9 | 5.88 | 6.96 | 9.58 | 18.1 | 15.1 | 23.8 | 15.9 | 19 | 21.2 |
| O₃ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 41.9 | 40.8 | 34.2 | 31.8 | 25.6 | 31.3 | 37.4 | 32.6 | 40.2 | 44.8 | 48.5 | 54.2 | 52.1 | 41 | 33.9 | 27.9 | 26.5 |
| NO₂ | 8.09 | 11.2 | 13.3 | 21.95 | 27.9 | 28.75 | 19.55 | 19.5 | 13.6 | 11.69 | 8.33 | 14.23 | 13.18 | 16.53 | 22.7 | 34.6 | 38.73 | 29.63 | 24.3 | 21.37 | 17.53 | 15.19 | 14.56 | 13.17 | 19.83 | 23.15 | 26.52 | 29 | 33.17 | 38.98 | 32.45 | 25.8 | 16.07 | 16.57 | 14.58 | 15.82 | 19.4 | 19.5 | 30.4 | 34.5 | 46.27 | 44.2 |
| SO₂ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1.52 | 1.64 | 1.44 | 1.12 | 1.22 | 1.14 | 1.07 | 1.15 | 1.3 | 1.37 | 1.47 | 1.37 | 1.07 | 0.94 | 1.86 | 2.1 | 2.11 |
| CO | 267 | 284 | 302 | 271 | 325 | 331 | 239 | 288 | 290 | 271 | 185 | 300 | 216 | 219 | 335 | 978 | 380 | 391 | 375 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
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 4
AIR QUALITY ARCHIVE · Grønland
Grønland
Station code: Grønland
Monthly monitoring station data.
O₃Lowest 25.6 2017-12Highest 54.2 2017-052016-12 - 2018-04
NO₂Lowest 9.13 2017-07Highest 47.7 2017-012016-12 - 2018-04
SO₂Lowest 0.94 2017-03Highest 2.11 2016-122016-12 - 2018-04
Scroll the chart or table sideways to see the full period.
| Pollutant | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| O₃ | 41.9 | 40.8 | 34.2 | 31.8 | 25.6 | 31.3 | 37.4 | 32.6 | 40.2 | 44.8 | 48.5 | 54.2 | 52.1 | 41 | 33.9 | 27.9 | 26.5 |
| NO₂ | 25.4 | 26.8 | 31.1 | 33.9 | 44.4 | 37.7 | 28.1 | 14.9 | 13.9 | 9.13 | 11.2 | 15.8 | 19 | 30.4 | 30.6 | 47.7 | 47.1 |
| SO₂ | 1.52 | 1.64 | 1.44 | 1.12 | 1.22 | 1.14 | 1.07 | 1.15 | 1.3 | 1.37 | 1.47 | 1.37 | 1.07 | 0.94 | 1.86 | 2.1 | 2.11 |
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 ↗Norway
AIR QUALITY ARCHIVE · Kirkeveien
Kirkeveien
Station code: Kirkeveien
Monthly monitoring station data.
PM2.5Lowest 3.37 2020-05Highest 16.9 2019-042016-12 - 2020-05
PM10Lowest 5.01 2020-05Highest 30.5 2019-042016-12 - 2020-05
NO₂Lowest 8.76 2020-05Highest 50.2 2017-012016-12 - 2020-05
COLowest 185 2019-07Highest 978 2019-022016-12 - 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 | 3.37 | 5.87 | 7.5 | 8.86 | 9.64 | 11 | 6.09 | 6.63 | 6.21 | 10.2 | 4.89 | 5.41 | 4.21 | 16.9 | 4.14 | 8.91 | 11.6 | 10 | 8.61 | 3.94 | 4.85 | 3.82 | 6.77 | 4.9 | 6.63 | 5.63 | 7.1 | 10.5 | 12.8 | 11.3 | 7.59 | 4.44 | 4.93 | — | 4.71 | 4.8 | 6.09 | 4.38 | 6.22 | 11.8 | 12.5 | 13.6 |
| PM10 | 5.01 | 13.9 | 15.6 | 21.3 | 18.4 | 13.4 | 7.81 | 11.4 | 9.17 | 16.1 | 7.91 | 9.56 | 8.9 | 30.5 | 17 | 15 | 16.5 | 13.5 | 19.7 | 9.15 | 10.6 | 8.69 | 13.1 | 11.5 | 16.3 | 23.8 | 14.9 | 13.9 | 14.4 | 16.2 | 13.4 | 11.4 | 9.94 | — | 8.42 | 13.9 | 18.1 | 15.1 | 23.8 | 15.9 | 19 | 21.2 |
| NO₂ | 8.76 | 12.2 | 14 | 23.7 | 28.8 | 28.1 | 15.8 | 22.6 | 15.9 | 14.7 | 10.3 | 15 | 13.2 | 15.9 | 22.3 | 35 | 37.2 | 29.6 | 22.9 | 19.8 | 19.1 | 16.7 | 16.1 | 16.5 | 22.4 | 22.7 | 24.7 | 29.5 | 34.3 | 37.4 | 29.5 | 26.9 | 17.1 | 19.1 | 13.5 | 17 | 19.4 | 18.2 | 30.8 | 37 | 50.2 | 48.6 |
| CO | 267 | 284 | 302 | 271 | 325 | 331 | 239 | 288 | 290 | 271 | 185 | 300 | 216 | 219 | 335 | 978 | 380 | 391 | 375 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
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 ↗Norway
AIR QUALITY ARCHIVE · Åkebergveien
Åkebergveien
Station code: Åkebergveien
Monthly monitoring station data.
PM10Lowest 9.05 2019-07Highest 30.3 2019-042016-12 - 2019-07
NO₂Lowest 8.78 2019-07Highest 47.8 2017-012016-12 - 2019-07
Scroll the chart or table sideways to see the full period.
| Pollutant | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM10 | 9.05 | 14.6 | 16.9 | 30.3 | 19 | 18.9 | 20.5 | 15.4 | 20.2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| NO₂ | 8.78 | 18.6 | 16.7 | 21 | 27.9 | 39.6 | 45.3 | 32.8 | 28 | 31.1 | 23 | 20.6 | 21.5 | 16.6 | 27.4 | 28.2 | 32.1 | 30.1 | 34.2 | 42.2 | 35.7 | 29.2 | 19.8 | 19.6 | 15.9 | 18.1 | 22.1 | 22 | 33.2 | 37.5 | 47.8 | 46.2 |
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 ↗Norway
AIR QUALITY ARCHIVE · Bekkestua
Bekkestua
Station code: Bekkestua
Monthly monitoring station data.
PM2.5Lowest 3.09 2017-06Highest 15.7 2019-012016-12 - 2020-05
PM10Lowest 5.05 2018-10Highest 31.2 2020-022016-12 - 2020-05
NO₂Lowest 5.91 2019-07Highest 39.4 2017-012016-12 - 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 | 4.11 | 5.02 | 9.83 | 8.96 | 7.59 | 12.4 | 7.33 | 5.52 | 3.48 | 6.95 | 5.36 | 6.57 | 4.22 | 12.7 | 5.93 | 11.2 | 15.7 | 15.1 | 11.9 | 3.56 | 4.64 | 4.18 | 7.75 | 4.08 | 9.52 | 9.5 | 9.29 | 14.5 | 12.6 | 15.1 | 10.5 | 5.23 | 5.59 | 4.24 | 3.69 | 3.09 | — | — | — | — | — | — |
| PM10 | 15.9 | 16.2 | 21.2 | 31.2 | 9.37 | 13 | 11.3 | 9.29 | 7.05 | 9.73 | 8.19 | 9.88 | 8.15 | 30.4 | 16.3 | 12.7 | 17.5 | 16.6 | 14.8 | 5.05 | 7.48 | 6.65 | 10.8 | 7.88 | 20 | 29.2 | 14.8 | 16.2 | 13.6 | 18.5 | 12.3 | 7.76 | 8.07 | 5.88 | 5.51 | 5.26 | — | — | — | — | — | — |
| NO₂ | 7.41 | 10.2 | 12.6 | 20.2 | 27 | 29.4 | 23.3 | 16.4 | 11.3 | 8.68 | 5.91 | 9.08 | 9.65 | 12.7 | 17.9 | 29.2 | 33.7 | 26.5 | 22 | 13.2 | 10.5 | 8.27 | 6.07 | 6.4 | 9.69 | 16.3 | 22.5 | 25.3 | 30.3 | 31.9 | 26.9 | 19 | 12.5 | 13.7 | 19.8 | 17 | 20.3 | 18.8 | 27.2 | 32.9 | 39.4 | 34.9 |
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 ↗Norway
Air quality in nearby cities
All cities →Norway · air quality in other cities
WEATHER & SURROUNDINGS
Oslo · weather forecast
Daily maximum and minimum temperatures. Forecast point: 59.9139, 10.7522.
Scroll the forecast to see the following days.
Oslo · September 23, 2026: minimum temperature 10.3°C, maximum 16.3°C. Wind: 7.9 km/h. Humidity: 89%.
Full forecast: temperature, rainfall, wind and humidity
| Date | Day °C | Min °C | Max °C | Night °C | Rain mm | Wind m/s | Humidity % | Clouds % |
|---|---|---|---|---|---|---|---|---|
| 2026-09-23 | 15.1 | 10.3 | 16.3 | 11.9 | 0.4 | 2.2 | 89 | 100 |
| 2026-09-24 | 15.9 | 12.3 | 17 | 12.3 | 2.8 | 3 | 90 | 98 |
| 2026-09-25 | 14.2 | 9.8 | 16.1 | 12.9 | 0.7 | 1.6 | 94 | 100 |
| 2026-09-26 | 16.9 | 10.1 | 18.9 | 10.1 | 3.2 | 3 | 53 | 7 |
| 2026-09-27 | 13.5 | 7.4 | 14.7 | 10.1 | 0.2 | 5.1 | 70 | 25 |
| 2026-09-28 | 13.4 | 9.6 | 13.4 | 12.5 | 11.1 | 4.7 | 97 | 99 |
| 2026-09-29 | 14.9 | 8.2 | 14.9 | 9.7 | 0.2 | 2.7 | 64 | 71 |
| 2026-09-30 | 15.7 | 8.2 | 17.5 | 11.7 | 0.3 | 2.8 | 82 | 90 |
| 2026-10-01 | 17.8 | 8.7 | 17.8 | 12.3 | 4.4 | 3.1 | 54 | 3 |
| 2026-10-02 | 16 | 10.8 | 16 | 10.8 | 1.4 | 3.6 | 69 | 91 |
| 2026-10-03 | 14.7 | 7.9 | 14.7 | 7.9 | 0.3 | 4.8 | 55 | 99 |
| 2026-10-04 | 14 | 5.3 | 14 | 10.1 | 8.3 | 3.9 | 49 | 10 |
| 2026-10-05 | 14.8 | 8.4 | 14.8 | 13 | 40.9 | 6.3 | 74 | 100 |
| 2026-10-06 | 16.3 | 13 | 16.3 | 13 | 5 | 5.3 | 75 | 100 |
| 2026-10-07 | 15.4 | 12.6 | 16.1 | 13.5 | 0.1 | 5.5 | 79 | 96 |
| 2026-10-08 | 12.6 | 8.3 | 12.8 | 8.3 | 5.9 | 4.7 | 68 | 100 |
| 2026-10-09 | 11.5 | 7.6 | 11.5 | 7.8 | 0.7 | 5.3 | 58 | 38 |
| 2026-10-10 | 12.9 | 5.5 | 12.9 | 12.9 | — | 0.8 | 66 | 19 |
UV index by day · Oslo
City data.
You can safely stay in the sun. Sunscreen only matters on very long exposure.
0-2 low3-5 moderate6-7 high8-10 very high11+ extreme
Scroll the forecast to see the following days.
Oslo · September 25, 2026: UV index: 1.6 .
| Indicator | 2026-09-25 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index | 1.6 | 2.8 | 2.9 | 0.4 | 2.3 | 2.2 | 2.5 | 2.1 | 0.4 | 2.3 | 2.1 | 2.3 | 2.2 | 2 | 0.5 | — |
AIR QUALITY QUESTIONS
Oslo · air pollution - questions and answers
What do the latest air quality data show for Oslo?
Oslo - latest available concentrations (September 26, 2026, 03:00 local time): PM2.5: 10.6 µg/m³, PM10: 14.7 µg/m³, O₃: 26 µg/m³, NO₂: 20.1 µg/m³, SO₂: 1.5 µg/m³, CO: 302 µg/m³. These are hourly CAMS model values for a point representing the city.
When was PM2.5 highest in Oslo over the past week?
The highest available daily mean PM2.5 was 10.5 µg/m³ (September 25, 2026). This comparison covers 7 days with data in the seven days before September 26, 2026. The day of the latest reading is excluded because it may be incomplete.
What period does the pollution history for Oslo cover?
Available monthly means cover 2016-12 - 2020-05. The tables include PM2.5, PM10, O₃, NO₂, SO₂, CO. 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 Oslo 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 Oslo?
For September 25, 2026, the forecast UV index is 1.6. The UV section also shows the following available days.
What wind speed is forecast for Oslo?
For September 23, 2026, forecast wind speed is 7.9 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.