Health Canada residential guidelines
Canada publishes its own residential indoor air guidelines, one pollutant at a time. The NO₂ limits are much stricter than U.S. outdoor standards; for PM₂.₅ there is no number, only "as low as possible."
Guides & support
Find the right guide.
Set up your sensor, connect your home, and make sense of your air.
Tagged: RegionalBrowse all guides
Sources & scenarios
1–1 of 1 guides
Climate zone effects
The same reading means different things in cold-dry, hot-humid, and temperate climates. Knowing your zone tells you which problems to watch for.
Canadian Air Quality Health Index
Canada uses a 0–10+ health-risk index instead of the US 0–500 AQI. Different math, different recommendations, same goal.
Tree pollens, regional
A short list of headline genera covers the broad strokes, but tree pollens vary by region. Oak in the South, cedar in Texas, maple in the Northeast, birch in the North.
Evaporative coolers ("swamp coolers"): cool air, high humidity
Common in the desert Southwest, evaporative coolers add 20-40 grains of moisture to the air for every degree of cooling. Different dynamics than AC, and a different humidity playbook.
