Air Quality in Saint John, Canada

Windy
10.3°C · 98.1% humidity
10.3°
Feels 10.3°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
30 8pm
23
23
25 11pm
23
23
23 2am
23
21
21 5am
21
21
21 8am
21
30
30 11am
30
30
30 2pm
30
30
30 5pm
30
30
Station readings 28h ago
AQI 20
PM2.5 4.7 µg/m³ · 28h ago
AD 728×90

Air Quality Index Trend

25h · 2 stn

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.

98.1%
Humidity
43.2 km/h
Wind SW
1002.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
25
6.03 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Saint John?

Temperature & Precipitation

PM2.5 Trend

25h · 2 stations
PM2.56.03 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (2 stations within 25 km)
6.03
Median
5.75
Average
5.3
Low
6.2
High
PM2.5 µg/m³ · Model: 6.15 · Bias: +0.1

What is the 7-day forecast for Saint John?

06-09
24.9° 8.1°
1.06 mm
06-10
16.9° 10.5°
0.13 mm
06-11
15.6° 8.6°
0.19 mm
06-12
16.9° 11.6°
0.81 mm
06-13
17.7° 10.2°
4.0 mm
06-14
13.4° 6.9°
5.56 mm
06-15
18.1° 11.6°
Both models agree Avg diff: 6.3°C

Where are air quality stations near Saint John?

15
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 3.6 µg/m³
38
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 9.1 µg/m³
37
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 8.9 µg/m³
28
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 6.7 µg/m³
21
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 5.0 µg/m³
23
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 5.5 µg/m³
19
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 4.6 µg/m³
11
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 2.6 µg/m³
13
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 3.1 µg/m³
18
West Side, Saint John, NewBrunswick, Canada
2.7 km PM2.5: 4.3 µg/m³

What cities are near Saint John?

26 Saint John West 23 Quispamsis 25 Fredericton 25 Fredericton Northside 25 Riverview 25 Lutes Mountain 25 Moncton 25 Dieppe 12 Lower Sackville 12 Bedford
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T02:10 UTC.