Hundreds of wildfires are burning in Canada, from the western provinces to Nova Scotia and Quebec in the east, where there are more than 150 active fires in a particularly fierce start to the summer season.
As the country grapples with the unprecedented threat, smoke moved into parts of north-east US, where tens of millions of people were under air quality alerts on Wednesday and told to limit outdoor activity.
We’d like to hear from our readers on how you are coping, both in Canada and the US. People living in Canada, how have you been affected? Those living in the US, how are you dealing with the air quality and hazy skies?