Castle Street, Saint John, NewBrunswick, Canada

Monitoring Station · Saint John, Canada
34
Good
Air quality is satisfactory. Enjoy outdoor activities.
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Nearby Monitoring Stations

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

PM2.58.2 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

32
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 7.7 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
22
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 5.3 µg/m³
32
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 7.7 µg/m³
23
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 5.5 µg/m³
36
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 8.6 µg/m³
15
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 3.6 µg/m³

Nearby Cities

20 Saint John 24 Saint John West 22 Quispamsis 24 Fredericton 24 Fredericton Northside 21 Riverview 21 Lutes Mountain 21 Moncton 21 Dieppe

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-15T17:33 UTC.