Air Quality in Saint John, Canada
Windy
18.7°C · 54.3% humidity
18.7°
Feels 18.7°
27
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Saint John's air quality — share it
AQI Forecast
25
5pm
27
27
27
8pm
27
27
27
11pm
27
27
27
2am
27
27
27
5am
27
27
27
8am
27
25
25
11am
25
25
25
2pm
25
25
Saint John's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
54.3%
Humidity
69.3 km/h
Wind SW
1008.4 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.5 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Saint John?
Temperature & Precipitation
PM2.56.5 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for Saint John?
08-03
18.7° 14.6°
2.31 mm
08-04
20.2° 13.2°
08-05
23.0° 15.6°
0.19 mm
08-06
24.3° 12.7°
08-07
22.1° 15.8°
0.19 mm
08-08
21.4° 16.2°
08-09
26.0° 15.0°
0.31 mm
Both models agree
Avg diff: 2.7°C
What cities are near Saint John?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-07T23:45 UTC.