Air Quality in Saint John, Canada

Overcast
8.1°C · 98.5% humidity
8.1°
Feels 4.7°
24
Good
Air quality is satisfactory. Enjoy outdoor activities.
6 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
23 9pm
23
23
24 12am
23
23
23 3am
21
21
21 6am
21
21
21 9am
30
30
30 12pm
30
30
30 3pm
30
30
30 6pm
30
30
Station readings 29h ago
AQI 20
PM2.5 4.7 µg/m³ · 29h ago
AD 728×90

Air Quality Index Trend

26h · 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.

98.5%
Humidity
22.5 km/h
Wind E
1004.8 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
24
5.72 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Saint John?

Temperature & Precipitation

PM2.5 Trend

26h · 2 stations
PM2.55.72 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (6 stations within 25 km)
5.72
Median
5.25
Average
3.6
Low
6.2
High
PM2.5 µg/m³ · Model: 6.15 · Bias: +0.4

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?

25 Saint John West 20 Quispamsis 28 Fredericton 28 Fredericton Northside 22 Riverview 22 Lutes Mountain 22 Moncton 22 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 2026-06-09T03:33 UTC.