Air quality in Saint John 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 | 18 µg/m³ | Fair |
| PM10 | 18 µg/m³ | Good |
| NO₂ | 22 µg/m³ | Good |
| O₃ | 42 µg/m³ | Good |
The pollutant that matters most in Saint John right now is PM2.5.
Forecast: next 24 hours
Over the next 24 hours the air in Saint John is expected to be worst around Thu 22:00 (AQI 41, moderate). The cleanest hour is expected around Fri 10:00.
| Time | AQI | Level | PM2.5 |
|---|---|---|---|
| Thu 22:00 | 41 | Moderate | 17 |
| Fri 01:00 | 36 | Fair | 13 |
| Fri 04:00 | 27 | Fair | 8 |
| Fri 07:00 | 21 | Fair | 6 |
| Fri 10:00 | 19 | Good | 5 |
| Fri 13:00 | 28 | Fair | 3 |
| Fri 16:00 | 31 | Fair | 4 |
| Fri 19:00 | 27 | Fair | 4 |
The last 30 days
Over the last 30 days the average daily AQI in Saint John was 27, with 0 day(s) rated poor or worse. The cleanest day was 20 Sept, the most polluted 10 Sept.
Questions and answers
- Is the air in Saint John good today?
- Right now the European Air Quality Index in Saint John is 41, which is moderate. Sensitive people may want to take it easier outdoors.
- What pollutes the air in Saint John?
- At the moment PM2.5 contributes most to the air quality index in Saint John. 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 John be cleanest?
- Over the next 24 hours the air in Saint John is expected to be worst around Thu 22:00 (AQI 41, moderate). The cleanest hour is expected around Fri 10:00.
- 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.