Air quality in Viseu today
Portugal · Updated Friday 03:00 (local time) · Model data from the Copernicus Atmosphere Monitoring Service
Fair European AQI
Fine for almost everyone.
Pollutants right now
| Pollutant | Value | Level |
|---|---|---|
| PM2.5 | 11 µg/m³ | Fair |
| PM10 | 15 µg/m³ | Good |
| NO₂ | 9 µg/m³ | Good |
| O₃ | 46 µg/m³ | Good |
The pollutant that matters most in Viseu right now is PM2.5.
Forecast: next 24 hours
Over the next 24 hours the air in Viseu is expected to be worst around Fri 18:00 (AQI 42, moderate). The cleanest hour is expected around Fri 11:00.
| Time | AQI | Level | PM2.5 |
|---|---|---|---|
| Fri 04:00 | 33 | Fair | 12 |
| Fri 07:00 | 35 | Fair | 13 |
| Fri 10:00 | 34 | Fair | 12 |
| Fri 13:00 | 37 | Fair | 7 |
| Fri 16:00 | 40 | Fair | 7 |
| Fri 19:00 | 41 | Moderate | 9 |
| Fri 22:00 | 36 | Fair | 13 |
| Sat 01:00 | 40 | Fair | 16 |
The last 30 days
Over the last 30 days the average daily AQI in Viseu was 27, with 0 day(s) rated poor or worse. The cleanest day was 9 Sept, the most polluted 15 Sept.
Questions and answers
- Is the air in Viseu good today?
- Right now the European Air Quality Index in Viseu is 32, which is fair. Fine for almost everyone.
- What pollutes the air in Viseu?
- At the moment PM2.5 contributes most to the air quality index in Viseu. The index takes the worst of fine particles (PM2.5), coarser particles (PM10), nitrogen dioxide, ozone and sulphur dioxide.
- When will the air in Viseu be cleanest?
- Over the next 24 hours the air in Viseu is expected to be worst around Fri 18:00 (AQI 42, moderate). The cleanest hour is expected around Fri 11:00.
- 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.