Post #3813727
2026-07-14 17:07 UTC
@stephanie@ottawa.place @zazzoo@mstdn.ca You can switch purple air to the Canadian numbers. It mostly shows 3s and 2s (it was more 2s earlier), which are still blue low risk.
Replies (1)
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@zazzoo@mstdn.ca 2026-07-14 17:16
@mariellequinton@ottawa.place @stephanie@ottawa.place Your point is well taken, but I'm now confused how reading PurpleAir's map and switching between US and Canadian scales ends up translating values as high as an EPA orange 80 in Vanier, but then that becomes a blue 3 in Canadian units. My understanding is that Canadian PM2.5 exposure limits are more strict than the EPAs, at least by a bit.