Calculated at 2:00 am EDT Monday, May 18, 2026

| Period | Forecast maximum (Issued at 5:00 pm EDT May 17, 2026) | |
|---|---|---|
| Sunday | 3 - Low Risk | ![]() |
| Sunday night | 4 - Moderate Risk | ![]() |
| Monday | 4 - Moderate 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.