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Toronto air ranked among world's worst as wildfire smoke billows south
Toronto had the worst air quality of any major city in the world Wednesday, the Swiss firm IQAir said, as Canadian authorities urged people to stay indoors.
Source Phys.org AI Summary Updated 25m ago
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Toronto had the worst air quality of any major city in the world Wednesday, the Swiss firm IQAir said, as Canadian authorities urged people to stay indoors.
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