Wildfire smoke causes severe air quality issues in Greater Toronto Area
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Environment Canada
Greater Toronto Area, Canada
July 16, 2026
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COMPAMIR Editorial Team
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Read our editorial policy- Earlier version 17/16/2026, 4:41:15 PM
Orange-level air quality warning issued for southern Ontario due to wildfire smoke. PM 2.5 levels spiked significantly, reaching 'very high risk' levels. Toronto ranked among the world's most polluted cities. City-run outdoor programs and pools were closed.
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