Air quality in Köln today
Germany · Updated Friday 03:00 (local time) · Model data from the Copernicus Atmosphere Monitoring Service
Moderate European AQI
Sensitive people may want to take it easier outdoors.
Pollutants right now
| Pollutant | Value | Level |
|---|---|---|
| PM2.5 | 14 µg/m³ | Fair |
| PM10 | 19 µg/m³ | Good |
| NO₂ | 38 µg/m³ | Good |
| O₃ | 13 µg/m³ | Good |
The pollutant that matters most in Köln right now is PM2.5.
Forecast: next 24 hours
Over the next 24 hours the air in Köln is expected to be worst around Fri 08:00 (AQI 45, moderate). The cleanest hour is expected around Fri 15:00.
| Time | AQI | Level | PM2.5 |
|---|---|---|---|
| Fri 04:00 | 44 | Moderate | 13 |
| Fri 07:00 | 43 | Moderate | 12 |
| Fri 10:00 | 41 | Moderate | 17 |
| Fri 13:00 | 31 | Fair | 11 |
| Fri 16:00 | 30 | Fair | 9 |
| Fri 19:00 | 41 | Moderate | 9 |
| Fri 22:00 | 42 | Moderate | 9 |
| Sat 01:00 | 43 | Moderate | 10 |
The last 30 days
Over the last 30 days the average daily AQI in Köln was 32, with 0 day(s) rated poor or worse. The cleanest day was 4 Sept, the most polluted 22 Sept.
Questions and answers
- Is the air in Köln good today?
- Right now the European Air Quality Index in Köln is 47, which is moderate. Sensitive people may want to take it easier outdoors.
- What pollutes the air in Köln?
- At the moment PM2.5 contributes most to the air quality index in Köln. The index takes the worst of fine particles (PM2.5), coarser particles (PM10), nitrogen dioxide, ozone and sulphur dioxide.
- When will the air in Köln be cleanest?
- Over the next 24 hours the air in Köln is expected to be worst around Fri 08:00 (AQI 45, moderate). The cleanest hour is expected around Fri 15:00.
- Where does this data come from?
- Wheezair shows model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), served by Open-Meteo: about 11 km resolution in Europe and 40 km elsewhere, updated daily. They are not station measurements, so a busy street can be worse than its city's value.