Castle Street, Saint John, NewBrunswick, Canada

Monitoring Station · Saint John, Canada
36
Good
Air quality is satisfactory. Enjoy outdoor activities.
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Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
34 8pm
34
34
34 11pm
34
34
34 2am
34
34
34 5am
27
25
25 8am
24
24
— 11am
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—
— 2pm
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— 5pm
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Air Quality Trend (24h)

PM2.58.6 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

36
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 8.6 µg/m³
40
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 9.6 µg/m³
38
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 9.1 µg/m³
34
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 8.2 µg/m³
32
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 7.7 µg/m³
32
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 7.7 µg/m³
31
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 7.4 µg/m³
32
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 7.7 µg/m³

Nearby Cities

30 Saint John 27 Saint John West 26 Quispamsis 10 Fredericton 10 Fredericton Northside 30 Riverview 30 Lutes Mountain 30 Moncton 30 Dieppe

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-14T23:33 UTC.