Air quality in Santa Helena today
Brazil · Updated Friday 09:00 (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 | 7 µg/m³ | Good |
| PM10 | 11 µg/m³ | Good |
| NO₂ | 1 µg/m³ | Good |
| O₃ | 52 µg/m³ | Fair |
The pollutant that matters most in Santa Helena right now is O₃.
Forecast: next 24 hours
The air in Santa Helena should stay good to fair for the next 24 hours. The cleanest hour is expected around Fri 22:00.
| Time | AQI | Level | PM2.5 |
|---|---|---|---|
| Fri 10:00 | 25 | Fair | 7 |
| Fri 13:00 | 24 | Fair | 7 |
| Fri 16:00 | 25 | Fair | 7 |
| Fri 19:00 | 27 | Fair | 9 |
| Fri 22:00 | 22 | Fair | 6 |
| Sat 01:00 | 22 | Fair | 6 |
| Sat 04:00 | 23 | Fair | 6 |
| Sat 07:00 | 26 | Fair | 8 |
The last 30 days
Over the last 30 days the average daily AQI in Santa Helena was 26, 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 Santa Helena good today?
- Right now the European Air Quality Index in Santa Helena is 24, which is fair. Fine for almost everyone.
- What pollutes the air in Santa Helena?
- At the moment O₃ contributes most to the air quality index in Santa Helena. The index takes the worst of fine particles (PM2.5), coarser particles (PM10), nitrogen dioxide, ozone and sulphur dioxide.
- When will the air in Santa Helena be cleanest?
- The air in Santa Helena should stay good to fair for the next 24 hours. The cleanest hour is expected around Fri 22:00.
- 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.