Air quality in Viana today
Brazil · Updated Friday 05:00 (local time) · Model data from the Copernicus Atmosphere Monitoring Service
Good European AQI
Clean air. A great time to be outside.
Pollutants right now
| Pollutant | Value | Level |
|---|---|---|
| PM2.5 | 5 µg/m³ | Good |
| PM10 | 8 µg/m³ | Good |
| NO₂ | 4 µg/m³ | Good |
| O₃ | 31 µg/m³ | Good |
The pollutant that matters most in Viana right now is O₃.
Forecast: next 24 hours
The air in Viana should stay good to fair for the next 24 hours. The cleanest hour is expected around Fri 06:00.
| Time | AQI | Level | PM2.5 |
|---|---|---|---|
| Fri 06:00 | 20 | Good | 5 |
| Fri 09:00 | 24 | Fair | 7 |
| Fri 12:00 | 26 | Fair | 6 |
| Fri 15:00 | 27 | Fair | 7 |
| Fri 18:00 | 26 | Fair | 8 |
| Fri 21:00 | 28 | Fair | 9 |
| Sat 00:00 | 21 | Fair | 6 |
| Sat 03:00 | 21 | Fair | 6 |
The last 30 days
Over the last 30 days the average daily AQI in Viana was 27, with 0 day(s) rated poor or worse. The cleanest day was 23 Sept, the most polluted 14 Sept.
Questions and answers
- Is the air in Viana good today?
- Right now the European Air Quality Index in Viana is 20, which is good. Clean air. A great time to be outside.
- What pollutes the air in Viana?
- At the moment O₃ contributes most to the air quality index in Viana. The index takes the worst of fine particles (PM2.5), coarser particles (PM10), nitrogen dioxide, ozone and sulphur dioxide.
- When will the air in Viana be cleanest?
- The air in Viana should stay good to fair for the next 24 hours. The cleanest hour is expected around Fri 06:00.
- 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.