Castle Street, Saint John, NewBrunswick, Canada

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

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
34 10pm
34
34
34 1am
34
34
34 4am
34
27
25 7am
25
24
24 10am
24
24
— 1pm
—
—
— 4pm
—
—
— 7pm
—
—

Air Quality Trend (24h)

PM2.57.7 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
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
40
Castle Street, Saint John, NewBrunswick, Canada
0.0 km PM2.5: 9.6 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 2026-04-15T01:25 UTC.