Calculated at 11:00 pm EST Wednesday, December 17, 2025

| Period | Forecast maximum (Issued at 5:00 pm EST December 17, 2025) | |
|---|---|---|
| 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.