A planned maintenance is scheduled for Friday, September 9 at 5 pm EDT until Saturday, September 10 at 5 pm. Air quality data will not be updated during this time. In the interim, please visit weather.gc.ca for current AQHI values provided on an hourly basis. We appreciate your patience and apologize for any inconvenience this may cause.
Air Quality Health Index (AQHI) Historical Search
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AQHI readings on this web page are based on automatically polled data and have not undergone final verification.