Air quality in Coimbra today
Portugal · 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 | 16 µg/m³ | Fair |
| PM10 | 22 µg/m³ | Fair |
| NO₂ | 10 µg/m³ | Good |
| O₃ | 64 µg/m³ | Fair |
The pollutant that matters most in Coimbra right now is PM2.5.
Forecast: next 24 hours
Over the next 24 hours the air in Coimbra is expected to be worst around Fri 16:00 (AQI 44, moderate). The cleanest hour is expected around Fri 21:00.
| Time | AQI | Level | PM2.5 |
|---|---|---|---|
| Fri 04:00 | 41 | Moderate | 17 |
| Fri 07:00 | 41 | Moderate | 17 |
| Fri 10:00 | 40 | Fair | 16 |
| Fri 13:00 | 36 | Fair | 10 |
| Fri 16:00 | 44 | Moderate | 9 |
| Fri 19:00 | 34 | Fair | 9 |
| Fri 22:00 | 28 | Fair | 9 |
| Sat 01:00 | 37 | Fair | 12 |
The last 30 days
Over the last 30 days the average daily AQI in Coimbra was 34, with 0 day(s) rated poor or worse. The cleanest day was 8 Sept, the most polluted 3 Sept.
Questions and answers
- Is the air in Coimbra good today?
- Right now the European Air Quality Index in Coimbra is 41, which is moderate. Sensitive people may want to take it easier outdoors.
- What pollutes the air in Coimbra?
- At the moment PM2.5 contributes most to the air quality index in Coimbra. The index takes the worst of fine particles (PM2.5), coarser particles (PM10), nitrogen dioxide, ozone and sulphur dioxide.
- When will the air in Coimbra be cleanest?
- Over the next 24 hours the air in Coimbra is expected to be worst around Fri 16:00 (AQI 44, moderate). The cleanest hour is expected around Fri 21:00.
- 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.