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Tag: wildfire smoke

Topic: ManitobaView all posts for the topic: Manitoba

‘Very high risk’ air quality in Brandon, as smoke persists

Published May 31, 2025

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Published by: The Brandon Sun
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By Abiola Odutola

The Air Quality Health Index (AQHI) for Brandon reached 10+, indicating a “very high risk” level on Saturday morning, as thick smoke was expected to linger in the air until Saturday night.

Environment Canada’s forecast anticipates that these hazardous conditions will persist through Saturday night, with only a slight improvement expected, dropping to a “moderate risk” (AQHI 6) by Sunday morning and a “high risk” (AQHI 7) by Sunday night.

The elevated readings are the result of thick wildfire smoke that drifted into Brandon Friday evening and remains heavy over the city Saturday morning. The smoke originates from wildfires burning in northern Manitoba and northern Saskatchewan and has led Environment Canada to issue a special air quality statement for the city.

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Topic: SaskatchewanView all posts for the topic: Saskatchewan

Wildfire smoke descends on Saskatoon

Published May 30, 2025

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Published by: CTV News
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By Rory MacLean

Saskatoon was under an air quality advisory Friday morning, as wildfires raging in northern Alberta and Saskatchewan sent smoke across the southern parts of the province.

Those who left a window open overnight likely woke up to the familiar smell of a campfire, but Environment and Climate Change Canada (ECCC) is advising residents to close their windows and limit strenuous outdoor activities or exercise while the system of air pollution passes through.

“Protect your indoor air from wildfire smoke. Actions can include using a clean, good quality air filter in your ventilation system and/or a certified portable air cleaner that can filter fine particles,” the statement said.

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Topic: wildfiresView all posts for the topic: wildfires

Long-term exposure to wildfire smoke associated with increased risk of dementia: study

Published December 2, 2024

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Published by: CBC News
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By Alexandra Mae Jones

Being exposed to wildfire smoke over a long period of time could increase the risk of developing dementia even more than exposure to other sources of air pollution, according to new research.

In the study, published last week in the journal JAMA Neurology, researchers looked at a cohort of more than 1.2 million people over the age of 60 living in Southern California between 2008 and 2019. They tracked dementia incidence among the cohort and compared it to the average concentration of fine particulate matter, also known as PM2.5, in the air due to wildfires in the region.

They found that when the three-year average concentration of wildfire PM2.5 went up by just one microgram per cubic metre of air, there was an associated 18 per cent increase in the odds of a dementia diagnosis.

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Topic: climate crisisView all posts for the topic: climate crisis

Wildfire smoke may increase the risk of dementia, study finds

Published July 29, 2024

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Published by: The Guardian
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A new US study has found that wildfire smoke may be worse for brain health than other types of air pollution and even increase the risk of dementia.

The findings, reported on Monday at the Alzheimer’s Association International Conference in Philadelphia, come as millions spent the weekend under air quality warnings from wildfires spewing smoke across the western US, including a huge wildfire in California that has grown to more than 360,000 acres.

At issue is fine particulate matter or PM 2.5 – tiny particles about 30 times smaller than the diameter of a human hair that can be inhaled deep into the lungs and move to the bloodstream. This pollution – from traffic, factories and fires – can cause or worsen heart and lung diseases, and the new study adds to evidence it may play some role in dementia, too.

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Topic: climate crisisView all posts for the topic: climate crisis

This wildfire season, changes are coming to better inform people about smoke hazards

Published May 20, 2024

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Published by: The Canadian Press
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By Sonja Puzic

Last year’s record-breaking wildfire season forced Canadians to become familiar with the scale of air pollution as hazardous smoke drifted across the country.

Environment Canada’s colour-coded Air Quality Health Index, designed to help people understand health risks associated with contaminated air, was closely watched under hazy, orange skies that stretched beyond the Canada-U.S. border.

But the AQHI, measured on a scale from one to 10+, was not calculated the same way in all provinces and some people were unsure how index values applied to their daily activities.

Environment Canada hopes several changes being made this year will improve how air quality-related health risks are communicated and understood by the public.

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Topic: climate crisisView all posts for the topic: climate crisis

Risk of wildfire smoke in Ottawa low — for now: Environment Canada

Published May 13, 2024

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Published by: Ottawa Citizen
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By Blair Crawford

Smoke from wildfires in Western Canada will soon be drifting high overhead, but it poses no health risk in Eastern Ontario, says Environment Canada.

“Taking a look at our guidance and the weather patterns this week and the way things are panning out, it doesn’t look like Eastern Ontario needs to be concerned about its air quality at this time,” Trudy Kidd, a warning preparedness meteorologist with Environment Canada, said Monday.

“At best, people might see some haze in the skies in the coming days as the forest fire smoke makes its way through and disperses aloft, but from what we can tell at this time, the particulate matter — and that’s what’s of concern when it comes to forest fires — we’re expecting it to stay aloft,” she said.

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Topic: climate crisisView all posts for the topic: climate crisis

Wildfire smoke could move into Ottawa, eastern Ontario tonight

Published May 13, 2024

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Published by: CTV News
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By William Eltherington

Wildfires in western Canada will likely bring smoke into Ottawa and eastern Ontario starting on Monday and into Tuesday morning.

CTV’s Your Morning chief meteorologist Kelsey McEwen says smoke could travel as far as Quebec City by Tuesday morning with air quality advisories being issued in five provinces.

“You can see the Jetstream pulling that smoke down south of the border through the Dakotas and back up through the Great Lakes,” McEwen said.

“By tomorrow, this begins to slide toward the Ottawa-Gatineau area, tomorrow morning and out toward Quebec City.”

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Topic: climate crisisView all posts for the topic: climate crisis

Smoky skies back in Alberta as wildfires spread

Published May 12, 2024

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Published by: CBC News
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Just as the last vestiges of winter gave way to a few days of warm weather, smoke has clouded Alberta’s skies, bringing with it a foreboding memory of summers past, as wildfires continue to burn in the northern parts of the province.

Environment and Climate Change Canada has issued 321 air quality alerts, spanning the province from High Level to Milk River. Alberta Wildfire is reporting 50 active wildfires as of 4:00 p.m. on Sunday, with two currently classified as out-of-control.

One, near Fort McMurray, tripled in size overnight to extend its reach to about 5,500 hectares. The other, burning in Grande Prairie County in northwestern Alberta, had grown to about 1,400 hectares as of 1 p.m. Sunday.

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Topic: climate crisisView all posts for the topic: climate crisis

Edmonton to see smoky skies, poor air quality into Monday night

Published May 12, 2024

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Published by: CTV News
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By Brittany Ekelund

Edmontonians saw a slight improvement in the smoky skies Sunday.

The air quality index in the city had dropped from a 10 – very high risk – to a high-risk 9 by Sunday afternoon.

According to Environment Canada, wildfire smoke is harmful even at low concentrations, and residents in affected areas were told to reduce or reschedule strenuous outdoor activities and watch for symptoms such as coughing and throat irritation.

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Topic: indoor air qualityView all posts for the topic: indoor air quality

Canada needs to improve indoor air quality for kids as an early wildfire season looms, advocates say

Published April 25, 2024

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Published by: Toronto Star
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By Kevin Jiang

Children are particularly susceptible to harm from air pollutants … They’re much more vulnerable to the health effects of poor indoor air quality because their bodies, brains and respiratory systems are still developing.

— Erica Phipps, Executive Director of Canadian Partnership for Children’s Health and Environment (CPCHE)
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Topic: N95 respiratorsView all posts for the topic: N95 respirators

Public Health should offer N95 masks

Published June 28, 2023

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Published by: Ottawa Citizen
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By Mike Buckthought

Re: Heavy smoke, smog wallop Ottawa, cancelling Dragon Boat, Indigenous festivals, June 25.

Thanks to climate change, we’re experiencing unprecedented hazardous air quality. Concentrations of pollutants have been an order of magnitude greater than the levels in major cities. And more smoke is on the way.

Ottawa Public Health should follow the example of public health organizations in other cities: it should distribute N95 respirators to Ottawa residents. Huron Perth Public Health is now offering respirators to residents who are at high risk for respiratory issues.

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Wildfire smoke may have contributed to thousands of extra COVID-19 cases and deaths in western U.S. in 2020The Apple Fire burns north of Beaumont, California, on July 31, 2020. Photo: Brody Hessin. Licensed under the Creative Commons Attribution 4.0 International license. https://creativecommons.org/licenses/by/4.0/deed.en
Topic: climate crisisView all posts for the topic: climate crisis

Wildfire smoke may have contributed to thousands of extra COVID-19 cases and deaths in western U.S. in 2020

Published August 13, 2021

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Published by: Harvard T.H. Chan School of Public Health
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Thousands of COVID-19 cases and deaths in California, Oregon, and Washington between March and December 2020 may be attributable to increases in fine particulate air pollution (PM2.5) from wildfire smoke, according to a new study co-authored by researchers at Harvard T.H. Chan School of Public Health.

Continue readingWildfire smoke may have contributed to thousands of extra COVID-19 cases and deaths in western U.S. in 2020
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