Outdoor exercise
Is it safe to run in Toronto today?
Live AQI and the best running window for Toronto based on Open-Meteo hourly forecasts.
Running today
Yes — generally safe for outdoor running
Current conditions are good for outdoor running, including longer or higher-intensity sessions. Sensitive groups — young children, older adults, and people with asthma or heart conditions — can generally exercise outdoors as normal, but it is still worth checking the hourly forecast below in case conditions shift later in the day.
Current AQI in Toronto
33
Good
Updated 19 Jul 2026, 23:00
Best window to run (next 12h)
Now – 00:00 · lowest ~19 AQI
Hourly AQI (next 12 hours)
Now
19
00:00
19
01:00
19
02:00
19
03:00
20
04:00
20
05:00
21
06:00
22
07:00
22
08:00
25
09:00
30
10:00
35
What affects air quality for runners in Toronto
Toronto's air quality is influenced by highway traffic, dense urban activity, and cross-regional transport around the Great Lakes. Nitrogen dioxide is highest near major routes and interchanges, while PM2.5 can remain elevated over wider zones during stable weather. Differences between downtown streets and lakeside areas can be pronounced.