For 12:00 am EDT Thursday, June 4, 2026
The AQHI calculation for Thunder Bay is not available at this time.
| Period | Forecast maximum (Issued at 5:00 pm EDT June 3, 2026) | |
|---|---|---|
| Wednesday | 3 - Low Risk |  |
| Wednesday night | 2 - Low Risk |  |
| Thursday | 2 - 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.
