Air quality in Saint-Étienne today
France · Updated Friday 06:00 (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 | 9 µg/m³ | Good |
| PM10 | 11 µg/m³ | Good |
| NO₂ | 9 µg/m³ | Good |
| O₃ | 41 µg/m³ | Good |
The pollutant that matters most in Saint-Étienne right now is PM2.5.
Forecast: next 24 hours
The air in Saint-Étienne should stay good to fair for the next 24 hours. The cleanest hour is expected around Sat 05:00.
| Time | AQI | Level | PM2.5 |
|---|---|---|---|
| Fri 07:00 | 28 | Fair | 9 |
| Fri 10:00 | 26 | Fair | 8 |
| Fri 13:00 | 32 | Fair | 6 |
| Fri 16:00 | 38 | Fair | 5 |
| Fri 19:00 | 33 | Fair | 5 |
| Fri 22:00 | 26 | Fair | 8 |
| Sat 01:00 | 27 | Fair | 9 |
| Sat 04:00 | 24 | Fair | 7 |
The last 30 days
Over the last 30 days the average daily AQI in Saint-Étienne was 25, with 0 day(s) rated poor or worse. The cleanest day was 30 Aug, the most polluted 7 Sept.
Questions and answers
- Is the air in Saint-Étienne good today?
- Right now the European Air Quality Index in Saint-Étienne is 27, which is fair. Fine for almost everyone.
- What pollutes the air in Saint-Étienne?
- At the moment PM2.5 contributes most to the air quality index in Saint-Étienne. The index takes the worst of fine particles (PM2.5), coarser particles (PM10), nitrogen dioxide, ozone and sulphur dioxide.
- When will the air in Saint-Étienne be cleanest?
- The air in Saint-Étienne should stay good to fair for the next 24 hours. The cleanest hour is expected around Sat 05:00.
- 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.