Castle Street, Saint John, NewBrunswick, Canada

Monitoring Station · Saint John, Canada
31
Good
Air quality is satisfactory. Enjoy outdoor activities.
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Nearby Monitoring Stations

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

PM2.57.4 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

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
29
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 7.0 µg/m³
36
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 8.6 µg/m³
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

Nearby Cities

28 Saint John 24 Saint John West 23 Quispamsis 25 Fredericton 25 Fredericton Northside 24 Riverview 24 Lutes Mountain 24 Moncton 24 Dieppe

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-15T02:58 UTC.