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
31 10pm
31
29
31 1am
31
31
31 4am
31
24
22 7am
22
21
21 10am
21
21
— 1pm
—
—
— 4pm
—
—
— 7pm
—
—
Station readings
29
CAMS model adj -3
34
34
34
34
34
34
34
34
27
25
25
24
24
24
24

Air Quality Trend (24h)

PM2.57.0 µg/m³ ✓ WHO
Good
View city history →

Nearby Monitoring Stations

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
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
27
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 6.5 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 27 Saint John West 24 Quispamsis 25 Fredericton 25 Fredericton Northside 25 Riverview 25 Lutes Mountain 25 Moncton 25 Dieppe

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-15T01:40 UTC.