Toronto Downtown, Ontario, Canada Air Quality

Monitoring Station · Bay Street Corridor, Canada
59
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
43 2am
43
59
43 5am
43
43
23 8am
23
16
16 11am
14
14
14 2pm
14
16
— 5pm
—
—
— 8pm
—
—
— 11pm
—
—
Station readings
59
CAMS model adj -11
54
54
54
54
54
54
34
34
27
27
25
25
25
25
27

Air Quality Forecast (24h)

PM2.515.9 µg/m³ ×1.1 WHO
Moderate
View city history →

Nearby Monitoring Stations

50
Toronto Downtown, Ontario, Canada
0.0 km PM2.5: 12.0 µg/m³
50
Toronto Downtown, Ontario, Canada
0.0 km PM2.5: 12.0 µg/m³
46
Toronto Downtown, Ontario, Canada
0.0 km PM2.5: 11.0 µg/m³
50
Toronto Downtown, Ontario, Canada
0.0 km PM2.5: 12.0 µg/m³
40
Toronto Downtown, Ontario, Canada
0.0 km PM2.5: 9.6 µg/m³
31
canada-toronto-richmond-street-west
1.4 km PM2.5: 7.5 µg/m³
77
Wood Glen
9.3 km PM2.5: 24.7 µg/m³
39
Toronto East, Ontario, Canada
13.2 km PM2.5: 9.4 µg/m³

Nearby Cities

55 Bay Street Corridor 55 Church-Yonge Corridor 55 North St.James Town 55 Kensington-Chinatown 55 Annex 55 Moss Park 55 Rosedale-Moore Park 55 Trinity-Bellwoods 55 Niagara

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-08-08T05:35 UTC.