Air quality in Ottawa today
Canada · Updated Thursday 21:00 (local time) · Model data from the Copernicus Atmosphere Monitoring Service
Moderate European AQI
Sensitive people may want to take it easier outdoors.
Pollutants right now
| Pollutant | Value | Level |
|---|---|---|
| PM2.5 | 11 µg/m³ | Fair |
| PM10 | 11 µg/m³ | Good |
| NO₂ | 38 µg/m³ | Good |
| O₃ | 19 µg/m³ | Good |
The pollutant that matters most in Ottawa right now is PM2.5.
Forecast: next 24 hours
Over the next 24 hours the air in Ottawa is expected to be worst around Thu 22:00 (AQI 46, moderate). The cleanest hour is expected around Fri 09:00.
| Time | AQI | Level | PM2.5 |
|---|---|---|---|
| Thu 22:00 | 46 | Moderate | 12 |
| Fri 01:00 | 41 | Moderate | 10 |
| Fri 04:00 | 27 | Fair | 5 |
| Fri 07:00 | 18 | Good | 3 |
| Fri 10:00 | 18 | Good | 3 |
| Fri 13:00 | 31 | Fair | 2 |
| Fri 16:00 | 33 | Fair | 2 |
| Fri 19:00 | 41 | Moderate | 6 |
The last 30 days
Over the last 30 days the average daily AQI in Ottawa was 26, with 0 day(s) rated poor or worse. The cleanest day was 6 Sept, the most polluted 12 Sept.
Questions and answers
- Is the air in Ottawa good today?
- Right now the European Air Quality Index in Ottawa is 47, which is moderate. Sensitive people may want to take it easier outdoors.
- What pollutes the air in Ottawa?
- At the moment PM2.5 contributes most to the air quality index in Ottawa. The index takes the worst of fine particles (PM2.5), coarser particles (PM10), nitrogen dioxide, ozone and sulphur dioxide.
- When will the air in Ottawa be cleanest?
- Over the next 24 hours the air in Ottawa is expected to be worst around Thu 22:00 (AQI 46, moderate). The cleanest hour is expected around Fri 09:00.
- 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.