Castle Street, Saint John, NewBrunswick, Canada

Monitoring Station · Saint John, Canada
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
43 7pm
50
30
50 10pm
50
50
50 1am
50
50
50 4am
50
43
41 7am
41
40
— 10am
—
—
— 1pm
—
—
— 4pm
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Station readings
30
CAMS model adj +16
27
34
34
34
34
34
34
34
34
34
34
27
25
25
24

Air Quality Trend (24h)

PM2.57.2 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
36
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 8.6 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
31
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 7.4 µg/m³
36
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 8.6 µg/m³
24
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 5.8 µg/m³

Nearby Cities

28 Saint John 26 Saint John West 24 Quispamsis 11 Fredericton 11 Fredericton Northside 28 Riverview 28 Lutes Mountain 28 Moncton 28 Dieppe

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-14T22:04 UTC.