Air Quality in Saint John, Canada

Partly Cloudy
21.4°C · 52.3% humidity
21.4°
Feels 21.4°
31
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast

Nearby Monitoring Stations

AQI Forecast
34 11am
27
27
31 2pm
27
27
27 5pm
34
34
34 8pm
34
34
34 11pm
34
27
27 2am
27
27
27 5am
27
27
25 8am
25
24
AD 728×90
View AQI history for Saint John →

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.

52.3%
Humidity
23.9 km/h
Wind SE
1018.4 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
31
7.35 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Saint John?

Temperature & Precipitation

PM2.57.35 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250

What is the 7-day forecast for Saint John?

07-21
21.4° 14.6°
8.5 mm
07-22
20.7° 14.0°
0.06 mm
07-23
19.1° 14.4°
16.0 mm
07-24
16.9° 15.0°
28.31 mm
07-25
16.9° 14.2°
4.19 mm
07-26
19.1° 13.6°
0.75 mm
07-27
20.5° 14.6°
Both models agree Avg diff: 2.9°C

Where are air quality stations near Saint John?

20
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 4.8 µg/m³
30
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 7.2 µg/m³
33
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 7.9 µg/m³
42
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 10.1 µg/m³
8
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 1.9 µg/m³
23
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 5.5 µg/m³
25
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 6.0 µg/m³
62
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 17.3 µg/m³
9
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 2.2 µg/m³
119
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 42.8 µg/m³

What cities are near Saint John?

31 Saint John West 30 Quispamsis 26 Fredericton 26 Fredericton Northside 25 Riverview 25 Lutes Mountain 25 Moncton 25 Dieppe 13 Lower Sackville 13 Bedford
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T17:18 UTC.