The smoke particles have already reached high into the atmosphere, so they won't cause health problems or unusual odours. The most colourful sunset is expected on Tuesday evening.
Authorities in Siberia’s republic of Tyva declared a regional state of emergency due to ongoing wildfires exacerbated by prolonged hot and dry weather.
Wildfires across the western United States and Canada have put millions of people under air quality alerts, as thousands of firefighters battle the flames.
A severe storm in Cornwall, Ontario, caused extensive damage, including a house fire from a lightning strike and widespread power outages.
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