Apple Maps
iOS Apple Maps does show air quality, but not very obviously.
It shows a small box for a single location in the lower right.
Settings -> Maps -> Climate -> Air Quality Index [set to on]
It's so tiny you may not even see it.
iPhone in Canada - July 19, 2021 - Apple Launches Air Quality Info for Weather and Maps in Canada
Even though it says AQI, in Canada it shows AQHI (1 to 10+ scale).
Google Maps
iOS Google Maps has added an air quality layer but for the USA only (using AirNow and PurpleAir). Also a North American wildfires layer.
Click on layers (the stack in the upper right) and select Air Quality or Wildfires.
Screenshots from Victoria, BC on June 10, 2023.
Here's the Air Quality layer, as you can see it shows US locations only.
And here's the Wildfires layer, which does include Canada.
For more information:
- Air quality on Google
- Crisis-related alerts in Google Maps (including wildfires)
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