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The current AQI For the current value, the pollutant responsible and recent changes in its components for a region’s or city’s air quality index, click on the map below. The air quality indices for the regions in grey are temporarily unavailable. The index may be unavailable due to monitoring equipment or communication failure. The AQI does not serve the regions in white because there are no monitoring stations in these areas. |
 Good |
 Acceptable |
 Poor |
 Data
unavailable* |
* Air Quality Index may be temporarily unavailable for some regions or sectors. However, by clicking on the region or sector of interest, historical data may be obtained.
Regions and Sectors
The City of Montréal operates its own Air Quality Monitoring Network. If you click here or on the zone called "Montréal", you will read the indices corresponding to this region.
For more details
Calculation method
Annual statistics
FAQ (French)
