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
21 1pm
25
30
25 4pm
26
26
28 7pm
35
35
35 10pm
35
35
35 1am
35
35
— 4am
—
—
— 7am
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— 10am
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Station readings
21
30
CAMS model adj +1
25
24
24
24
25
25
27
34
34
34
34
34
34
34
34

Air Quality Trend (24h)

PM2.57.2 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

24
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 5.8 µg/m³
31
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 7.4 µg/m³
24
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 5.8 µg/m³
32
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 7.7 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
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

29 Saint John 27 Saint John West 24 Quispamsis 25 Fredericton 25 Fredericton Northside 22 Riverview 22 Lutes Mountain 22 Moncton 22 Dieppe

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-14T16:17 UTC.