Environment Canada has lifted a severe thunderstorm warning for parts of Rocky View County, including the areas near Airdrie ...

Smoke from wildfires burning in Canada has caused air quality alerts for parts of New York state, including New York City.

Millions of Americans across the Midwest, Northeast and swathes of the South and Southwest are under air quality alerts Monday. Newsweek's live blog is closed.

Wildfire smoke from the Prairies has prompted special air-quality statements and warnings across the country Saturday.

Daytime high temperatures near 30 C with overnight low temperatures ranging between 14 to 18 C are forecast to begin ...

Large hail pelted Canada's hail alley on Sunday, but the stormy weather isn't done yet as Monday sees a renewed storm risk in ...

A Severe Thunderstorm Watch has been issued for a large part of southern Alberta. Environment Canada issued the Watch because ...

Residents across west-central Saskatchewan are being urged to remain weather-aware today as potentially severe thunderstorms ...

Favourable conditions will bring widespread thunderstorm risk to the Prairies, with some storms Thursday and Friday bringing ...

In the short term, the weather is going to be gorgeous! Tonight will be our final cooler night with overnight lows in the upper 50s and lower 60s.

WEATHER BLOG: Excessive heat continues, thunderstorms possible this week in Kansas City The First Alert Weather team has designated Tuesday through Saturday as Impact Days. Several Alert Days follow.

Millions of Americans are under weather advisories this week. See which major cities have heat, flood or storm advisories.