Current Conditions - Markham, ON

Latest Weather News - Toronto

• Heat warning issued for southern Ontario, expected to last into Thursday

  The alert issued Friday morning says daytime highs for areas between Windsor and Cornwall are expected to range from 29 C to 32 C.

  Weather

  6 hours
• ‘Pay attention’: Why Southern Ontario is the tornado hotspot of Canada

  Summer in Ontario may bring with it warm weather, but last week's tornado in Lucan is a reminder that it’s also tornado season.

  Weather

  Jul 9
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• Heat warning for southern Ontario, Quebec set to end tonight

  Southern Ontario is facing another heat wave with temperatures near 35°C and humidex values hitting 40, prompting warnings and expanded cooling measures in Toronto.

  Weather

  Jul 6
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• Heat warning issued for large portion of southern Ontario

  Environment Canada has issued a heat warning for Saturday and Sunday for an area that stretches from Peterborough to Windsor and includes Toronto, Hamilton, London and Barrie.

  Weather

  Jul 4
• 2nd tornado of the year touched down in Ontario on Monday, researchers say

  Severe weather researchers say a weak tornado touched down in a community north of London, Ont., on Monday afternoon.

  Canada

  Jul 3
• Heat wave blamed for 42 Toronto emergency room visits, public health says

  Toronto Public Health says it recorded 42 heat-related emergency department visits during the heat wave that gripped much of Ontario earlier this week.

  Weather

  Jun 26
• Video shows moment powerful lightning strikes Ontario school during grad ceremony

  A graduation ceremony being held at London South Collegiate Institute was interrupted Tuesday night after lightning struck and damaged the building it was being held in.

  Weather

  Jun 25
• Heat dome over Ontario, Quebec breaks temperature records, more humidity in store

  Toronto set a new June 23 temperature record when the mercury hit 36 degrees.

  Weather

  Jun 24
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• Heat wave hits Toronto for 2nd day as classrooms swelter, pools stay open late

  Temperatures in the city sat around 33 C on Monday afternoon, rising to upwards of 40 C with the humidity factored in.

  Weather

  Jun 23
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• Heat warning still in effect as Ontario, Quebec battle scorching temperatures

  Much of Ontario and southwestern Quebec will continue to bake in high temperatures Monday and Tuesday as a heat dome lingers over the region.

  Weather

  Jun 23
• ‘Heat dome’ over Ontario and Quebec causing wild weather across much of Canada

  Environment Canada says scorching temperatures over the east are causing below-normal temperatures in other regions, leading to wet snow and heavy rain warnings in the West.

  Canada

  Jun 22
• Environment Canada issues heat warnings for parts of Ontario, Quebec amid heat wave

  Environment Canada issued its first significant heat warning of the season on Saturday for southern and eastern Ontario and southern and western Quebec.

  Canada

  Jun 21
• Extreme heat can turn dangerous fast. Who is most vulnerable?

  Do you know the signs of dangerous heat stroke? With a scorching heat wave set for parts of central Canada, what to know about who is most at risk.

  Health

  Jun 20
• Summer heat wave set to hit Ontario may bring temperatures not seen in years

  Southern Ontario is set to get hit with a strong heat wave just in time for the official start of summer.

  Canada

  Jun 20
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• Wildfire near two Ontario First Nations ‘like a sleeping giant’ for now, MPP says

  A massive wildfire near Sandy Lake is "like a sleeping giant," says MPP Sol Mamakwa. Over 2,000 evacuees fled as Red Lake 12 grows past 160,000 hectares.

  Fire

  Jun 13
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• Air quality alerts ease across much of Quebec and Ontario after days of haze

  Air quality has improved in much of Quebec and Ontario, but wildfire smoke continues to affect parts of the Prairies, northern Ontario, and eastern Quebec.

  Environment

  Jun 8
• Air quality watches, statements issued for a large portion of Ontario

  With wildfire smoke looming over Ontario, Environment Canada has issued air quality watches and statements for a large portion of the province.

  Canada

  Jun 5
• Smoke from western wildfires to blame for hazy southern Ontario skies

  In northern Ontario, air quality warnings have been issued by Environment Canada in connection to forest fires, but the southern part of the province has been impacted as well.

  Weather

  Jun 3
• Chill, Ontario: Why warm, sunny days are on the way after very cool May

  'The low temperature of 4.9 C at Pearson airport was the coldest June temperature in the last 20 years,' Global News chief meteorologist Anthony Farnell said.

  Weather

  Jun 2
• Canada’s summer forecast 2025: Hot and dry conditions a concern for wildfires

  This summer especially, many of us will be exploring our own country like never before and the weather will play an important role in where we visit and when.

  Weather

  Jun 1
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• Researchers confirm 1st tornado of 2025 in Ontario has touched down

  Tornado season is officially underway in Ontario as the first one touched down near Woodstock, Ont., a week ago, according to weather researchers.

  Canada

  May 23
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• Rainfall warning in place for Toronto, Durham as up to 60 mm possible

  Environment Canada has issued a rainfall warning for Toronto and Durham Region as up to 60 mm of rain is possible by the end of Thursday.

  Weather

  May 22
• Toronto’s unusually low late May temperatures not seen since 1967: meteorologist

  Toronto is experiencing a stretch of unusually low temperatures that haven't been seen in late May in decades.

  Weather

  May 21
• Ontarians to see wild swing in weather throughout Victoria Day long weekend

  The Victoria Day long weekend is often the start to summer for many Ontarians with many heading to trailers and cottages to kick off the season.

  Weather

  May 15