Air Quality Health Alerts are issued jointly by the Ontario Ministry of the Environment, Conservation and Parks, and Environment and Climate Change Canada. href="http://www.airqualityontario.com/aqhi/alerts.php" 2026-04-03T15:46:00-04:00 tag:airqualityontario.com,2026-04-03:ontario-alerts:202604031546 Ontario Ministry of the Environment, Conservation and Parks, Air Monitoring and Transboundary Air Sciences Section http://www.airqualityontario.com Copyright 2026, Ontario Ministry of the Environment, Conservation and Parks

No active or recently ended Air Quality Health Alerts at this time. UPDATED: Fri, 03 Apr 2026 15:46:00 EDT.

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