Castle Street, Saint John, NewBrunswick, Canada

Monitoring Station · Saint John, Canada
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
26 11pm
27
29
27 2am
27
27
27 5am
20
18
18 8am
17
17
17 11am
17
17
— 2pm
—
—
— 5pm
—
—
— 8pm
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Station readings
26
29
CAMS model adj -7
34
34
34
34
34
34
34
27
25
25
24
24
24
24
24

Air Quality Trend (24h)

PM2.57.0 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
31
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 7.4 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
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 2026-04-15T02:29 UTC.