Air quality in Louisville today
United States · Updated Friday 07:00 (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 | 6 µg/m³ | Good |
| PM10 | 7 µg/m³ | Good |
| NO₂ | 9 µg/m³ | Good |
| O₃ | 45 µg/m³ | Good |
The pollutant that matters most in Louisville right now is O₃.
Forecast: next 24 hours
Over the next 24 hours the air in Louisville is expected to be worst around Fri 16:00 (AQI 52, moderate). The cleanest hour is expected around Sat 04:00.
| Time | AQI | Level | PM2.5 |
|---|---|---|---|
| Fri 08:00 | 23 | Fair | 7 |
| Fri 11:00 | 25 | Fair | 7 |
| Fri 14:00 | 44 | Moderate | 6 |
| Fri 17:00 | 51 | Moderate | 6 |
| Fri 20:00 | 32 | Fair | 6 |
| Fri 23:00 | 26 | Fair | 5 |
| Sat 02:00 | 20 | Good | 5 |
| Sat 05:00 | 18 | Good | 4 |
The last 30 days
Over the last 30 days the average daily AQI in Louisville was 39, with 0 day(s) rated poor or worse. The cleanest day was 22 Sept, the most polluted 4 Sept.
Questions and answers
- Is the air in Louisville good today?
- Right now the European Air Quality Index in Louisville is 23, which is fair. Fine for almost everyone.
- What pollutes the air in Louisville?
- At the moment O₃ contributes most to the air quality index in Louisville. The index takes the worst of fine particles (PM2.5), coarser particles (PM10), nitrogen dioxide, ozone and sulphur dioxide.
- When will the air in Louisville be cleanest?
- Over the next 24 hours the air in Louisville is expected to be worst around Fri 16:00 (AQI 52, moderate). The cleanest hour is expected around Sat 04:00.
- 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.