As dangerously high...

See in maps how heat waves and dangerous temperatures will affect your city this summer. Track the temperatures and extreme heat wave risk in your...

See in maps how heat waves and dangerous temperatures will affect your city this summer. Track the temperatures and extreme heat wave risk in your...

TORONTO — Dangerously high temperatures persisted on Monday across much of Ontario and southwestern Quebec, as residents tried to keep cool under a...

TORONTO — Dangerously high temperatures persisted on Monday across much of Ontario and southwestern Quebec, as residents tried to keep cool under a...

TORONTO — Dangerously high temperatures persisted on Monday across much of Ontario and southwestern Quebec, as residents tried to keep cool under a...

TORONTO — Dangerously high temperatures persisted on Monday across much of Ontario and southwestern Quebec, as residents tried to keep cool under a...

TORONTO — Dangerously high temperatures persisted on Monday across much of Ontario and southwestern Quebec, as residents tried to keep cool under a...

TORONTO — Dangerously high temperatures persisted on Monday across much of Ontario and southwestern Quebec, as residents tried to keep cool under a...

A record heat wave that spread across the East Coast of the United States during the first week of summer has child advocates warning parents and...