Castle Street, Saint John, NewBrunswick, Canada

Monitoring Station · Saint John, Canada
32
Good
Air quality is satisfactory. Enjoy outdoor activities.
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Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
24 4pm
25
25
27 7pm
34
34
34 10pm
34
34
34 1am
34
34
34 4am
34
27
— 7am
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— 10am
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— 1pm
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Air Quality Trend (24h)

PM2.57.7 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
28
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 6.7 µg/m³
34
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 8.2 µg/m³
24
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 5.8 µg/m³
24
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 5.8 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
38
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 9.1 µg/m³

Nearby Cities

66 Saint John 60 Saint John West 63 Quispamsis 10 Fredericton 10 Fredericton Northside 90 Riverview 90 Lutes Mountain 90 Moncton 90 Dieppe

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-14T19:45 UTC.