How bad are Canadian and US wildfires, and what is the air quality risk?

BBC Science Thursday 16 July 2026, 16:08 UTC 1 min read

Key Points

Wildfires in Ontario have blanketed US and Canadian cities with dangerous smoke.

Canadian (ORG) US (LOCATION) Ontario (LOCATION)

Originally published by BBC Science Read original →

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How bad are Canadian and US wildfires, and what is the air quality risk?

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