Monitoring Air Quality

To support the Air Quality Health Index (AQHI), the Ministry monitors up to 6 common pollutants at each of the 39 stations across the provincial AQHI network, including:

Ontario Air Quality Health Index Monitoring Network

No data available

For current AQHI information, please visit airqualityontario, Environment Canada, or call the AQHI Reporting System line at: (416) 246-0411 in the Toronto area or 1 (800) 387-7768 toll free.