Toronto Downtown, Ontario, Canada Air Quality

Monitoring Station · Bay Street Corridor, Canada
147
Unhealthy for sensitive groups
Sensitive groups should reduce prolonged outdoor exertion.
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Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
90 1am
90
90
90 4am
90
90
70 7am
61
61
60 10am
60
60
61 1pm
61
—
— 4pm
—
—
— 7pm
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— 10pm
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CAMS model adj +36
54
54
54
54
54
54
34
25
25
24
24
24
25
25

Air Quality Forecast (24h)

PM2.554.2 µg/m³ ×3.6 WHO
Unhealthy for sensitive groups
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Nearby Monitoring Stations

57
Toronto
1.2 km PM2.5: 15.0 µg/m³
59
Toronto
1.2 km PM2.5: 15.9 µg/m³
-
canada-toronto-richmond-street-west
1.4 km PM2.5: 0.1 µg/m³
26
Toronto East, Ontario, Canada
13.2 km PM2.5: 6.2 µg/m³
17
Toronto East, Ontario, Canada
13.2 km PM2.5: 4.1 µg/m³
18
Toronto East, Ontario, Canada
13.2 km PM2.5: 4.3 µg/m³
158
Toronto North, Ontario, Canada
13.4 km PM2.5: 69.1 µg/m³
13
Toronto North, Ontario, Canada
13.4 km PM2.5: 3.1 µg/m³

Nearby Cities

53 Bay Street Corridor 53 Church-Yonge Corridor 52 North St.James Town 52 Kensington-Chinatown 52 Annex 52 Moss Park 51 Rosedale-Moore Park 51 Trinity-Bellwoods 51 Niagara

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-05-30T04:06 UTC.