Wildfire smoke from Western Canada has created poor, unsafe air quality readings from northern Ontario to the Greater Toronto Area (GTA) and other areas in the province this week. Widespread, special ...

Ontario will welcome back wildfire smoke and the threat of thunderstorms on Wednesday. With more wildfire smoke returning, that means we're on track for reduced air quality in southern Ontario on ...

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The city’s Ultra Low Emission Zone, which imposes a daily charge on the most-polluting vehicles, is expanding despite some resistance. By Farah Nayeri Reporting from London Nick Arlett is a retired ...