2025-10-08 (Wed) Wildfire Smoke Forecast Model depicts concentration of PM2.5 8am Wednesday, Oct 8th to 1am Thursday, Oct 9th Source: Firesmoke.ca Wildfire Smoke and Your Health As wildfires burn through forests and grasslands, they produce smoke. Smoke can be a major source of air pollution for people in Canada. Wildfire smoke may be carried thousands of kilometres from the fire zone. This means smoke can 'impact air quality in areas close to and far away from the wildfire. Fine particles (PM2.

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