An air quality alert is currently in effect for select areas in Ontario.
Visit Environment and Climate Change Canada (ECCC) Weather Information for detailed information on the active alert.
Our website will be updated soon to reflect Environment and Climate Change Canada’s new colour coded alert system.
Calculated at 8:00 pm EST Wednesday, March 4, 2026

| Period | Forecast maximum (Issued at 5:00 pm EST March 4, 2026) | |
|---|---|---|
| Wednesday | 3 - Low Risk | ![]() |
| Wednesday night | 3 - Low Risk | ![]() |
| Thursday | 3 - Low Risk | ![]() |
See the Ontario Ministry of the Environment, Conservation and Parks air quality health messages.
Note: AQHI readings on this web page are based on automatically polled data and have not undergone final verification.