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Globe and Mail
2 hours ago
- Globe and Mail
Montreal air quality ranked worst in the world due to Prairie wildfire smoke
Smoke from wildfires in the Canadian Prairies has led to air quality warnings across southern Quebec. Swiss company IQAir this morning ranked Montreal as having the worst air quality in the world. Environment Canada has issued warnings that recommend limiting time spent outdoors. It says people with existing health conditions, seniors, pregnant women, infants and young children should avoid strenuous outdoor activities this weekend. Wildfire concern differs widely across Canada, poll shows Heat warnings are also in effect in southern Quebec for Sunday, Monday and Tuesday. Temperatures are expected to top 30 C during the day and remain above 20 C at night.


CTV News
2 hours ago
- CTV News
Heat, thunderstorm and air quality alerts: What's in store for Canadians this weekend
Weather advisories in effect in different parts of Canada. (Environment Canada) Residents of Quebec and Manitoba can expect a sweltering start to the weekend as Environment Canada warns of extreme heat and humidity in parts of the country. The weather advisory posted on Saturday says southern Quebec can expect temperatures over 30 C and a humidex of around 40 from Sunday afternoon through Tuesday. 'It will be particularly uncomfortable at night,' the weather advisory warns, with temperatures remaining higher than 20 C. Areas in southern Manitoba are under a similar warning for Saturday, with humidex values of around 38 in the afternoon. 'Conditions are expected to improve with the passage of a cold front overnight Saturday night,' Environment Canada says. Health Canada has issued an advisory for how to protect yourself from the health effects of extreme heat. Meanwhile, warnings of severe thunderstorms 'capable of producing nickel to ping pong ball size hail' have been issued for parts of Ontario. The weather advisory also warns of winds gusting 90 km/hand heavy rains. Impacted areas include Cat Lake, Casummit Lake, Birch Lake, Whitestone Lake, Kapikik Lake, Gitche Lake, Maxim Lake, McCoy Lake, Nikip Lake and Senia Lake. Air Quality Warnings Environment Canada continues to issue air quality warnings for regions in Manitoba, Ontario, Quebec, Saskatchewan and the Northwest Territories. Wildfire smoke is causing poor air quality and reduced visibility in these areas through the weekend, the weather alert says. 'Air quality and visibility due to wildfire smoke can fluctuate over short distances and can vary considerably from hour to hour,' it reads. Residents are advised to avoid outdoor activities, reschedule or cancel outdoor events, keep their doors and windows closed and use a respirator-type mask like a NIOSH-certified N95 or equivalent to reduce exposure to smoke. More information about the effects of wildfire smoke can be found here.
Montreal Gazette
3 hours ago
- Montreal Gazette
Montreal ranks as most-polluted city in world Saturday as wildfire smoke chokes Quebec
Montreal recorded the worst air quality in the world Saturday morning, according to the IQAir index, which ranks the most-polluted cities on the planet. It comes as thick smoke from wildfires in the Canadian Prairies settled over southern Quebec. Environment and Climate Change Canada issued a special air-quality advisory for large parts of the province, including Montreal, Estrie, Lanaudière, Mauricie and Centre-du-Québec. The agency warned everyone — regardless of age or health — is at risk during periods of dense smoke. 'Limit time outdoors,' the notice said. Those with pre-existing health conditions, older adults, pregnant women, infants and young children are especially vulnerable and should avoid strenuous outdoor activity. Officials say wearing an N95 respirator can help reduce exposure to fine particles. Residents are also advised to protect indoor air by using clean, high-efficiency filters in their ventilation systems. Air quality is expected to improve gradually throughout the day. Forecasts show the AQI moving from the 'unhealthy' range in the morning to 'moderate' levels by late afternoon and evening. Heat warnings are also in effect for parts of southern Quebec, including Montreal, Laval, the Laurentians and Montérégie. Temperatures are expected to exceed 30 C through Tuesday, with humidex values nearing 40 on Sunday. Overnight lows will remain above 20 C, making for particularly uncomfortable nights. 'In cases of extreme heat and poor air quality, the priority is to stay cool,' Environment Canada said.