Air Quality in Toronto, Canada

Clear
28.5°C · 42.7% humidity
28.5°
Feels 30.0°
89
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
125 10am
125
105
89 1pm
99
107
112 4pm
116
118
120 7pm
122
93
94 10pm
97
104
104 1am
125
125
105 4am
98
98
98 7am
98
95
Station readings
119
126
114
CAMS model adj +71
54
54
34
54
54
54
54
54
54
54
54
25
25
27
34
34
54
54
34
27
27
27
27
24
AD 728×90

Air Quality Index Trend

38h · 1 stn

Toronto's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Toronto is 2.0× the WHO 24-hour guideline of 15 µg/m³.

42.7%
Humidity
37.6 km/h
Wind ESE
1014.5 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
89
30.09 µg/m³
PM10
65
84.3 µg/m³
050100150200300500

What is the weather forecast for Toronto?

Temperature & Precipitation

PM2.5 Trend

38h · 1 station
PM2.530.09 µg/m³ ×2.0 WHO
Moderate
PM1084.3 µg/m³
Moderate
UV INDEX12.9
Extreme
AD 300×250
Station readings (2 stations within 25 km)
30.09
Median
29.11
Average
15.0
Low
43.23
High
PM2.5 µg/m³ · Model: 44.22 · Bias: +14.1

What is the 7-day forecast for Toronto?

07-21
28.5° 22.0°
1.69 mm
07-22
25.4° 20.9°
0.25 mm
07-23
22.9° 15.4°
07-24
24.9° 18.8°
07-25
24.8° 16.1°
0.5 mm
07-26
28.3° 19.9°
1.13 mm
07-27
30.1° 20.3°
0.13 mm
Both models agree Avg diff: 2.9°C

Where are air quality stations near Toronto?

50
Toronto Downtown, Ontario, Canada
4.9 km PM2.5: 12.0 µg/m³
32
Toronto
6.0 km PM2.5: 7.7 µg/m³
38
Toronto
6.0 km PM2.5: 9.1 µg/m³
12
canada-toronto-richmond-street-west
6.3 km 27.2°C 36.3% RH PM2.5: 2.8 µg/m³ PM10: 3.7 µg/m³
30
Toronto North, Ontario, Canada
8.5 km PM2.5: 7.2 µg/m³
18
Toronto North, Ontario, Canada
8.5 km PM2.5: 4.3 µg/m³
114
Wood Glen
10.2 km PM2.5: 40.8 µg/m³ PM10: 54.7 µg/m³
57
NASA GSFC Rutgers Calib. N20
10.9 km PM2.5: 15.0 µg/m³
39
Toronto East, Ontario, Canada
11.0 km PM2.5: 9.4 µg/m³
33
Toronto East, Ontario, Canada
11.0 km PM2.5: 7.9 µg/m³

What cities are near Toronto?

91 Mount Pleasant West 94 Mount Pleasant East 83 Lawrence Park South 102 Leaside-Bennington 102 Rosedale-Moore Park 73 Bedford Park-Nortown 73 Englemount-Lawrence 96 Annex 107 Thorncliffe Park 85 Oakwood Village
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T17:17 UTC.