Toronto's Air Pollution Map

NHALE is the first community air monitoring project in Canada. Jointly led by Environment Hamilton and Toronto Environmental Alliance with funding from Metcalf Foundation, this project puts local air quality monitoring into the hands of community members. Read more about the project.

Local Community Air Tracker volunteers are gathering data on fine particulate matter (PM 2.5) using easy-to-operate mobile air particulate monitoring equipment that can be attached to backpacks, bikes, baby strollers, walkers or scooters. This data is being mapped out here so it is easily accessible to the entire community.

Toronto's Air Pollution Map

Reading the map
Coloured squares: The air quality samples gathered by INHALE volunteers are clustered and displayed on the map as squares. Colours are based on an average of the samples collected in a particular area. The colours range from green to dark red, indicating low to high particulate levels measured in the a.. ir.

As more samples are collected, areas with chronically poor air quality will be revealed. Click on a square to see more details about the data samples and when they were collected.

Coloured circles: The Province of Ontario operates a small number of air monitoring stations that collect data used to calculate the Air Quality Health Index. The current air quality measurement (ug/m3) for Particulate Matter 2.5 is displayed in the circles on the INHALE map.

The data contained in this website has not undergone verification and is intended for educational purposes only.


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