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Wildfire Smoke Affects Millions in US and Canada

Thursday, July 23, 2026 · 5 sources

Wildfires in northern Minnesota and Canada are causing poor air quality in the Midwest and Northeast. Air quality alerts have been issued in several cities, including New York and Chicago.

Millions of Americans and Canadians are experiencing poor air quality due to wildfire smoke from fires in northern Minnesota and Canada. The smoke has turned the skies orange in some areas and is causing health concerns. Air quality alerts have been issued in New York, Chicago, and Toronto, with officials advising people to stay indoors.

The wildfires are not only affecting air quality but also destroying homes and devastating local tourism. Researchers have found that human-caused climate change is making wildfires more likely and intense, although it is too early to directly link these wildfires to climate change.

A report by Climate Central found that per-person exposure to harmful wildfire smoke in the US was four times higher during 2020-2024 than during 2006-2019. The smoke could continue to be a problem for some time, with hot and dry conditions allowing the fires to keep burning and an elevated risk of new fires.

The 50+ takeaway: Poor air quality can worsen respiratory issues.

Go Deeper

What is causing the poor air quality?

The poor air quality is caused by wildfire smoke from fires in northern Minnesota and Canada. The smoke is drifting into the Midwest and Northeast, affecting millions of people.

How long will the smoke be a problem?

The smoke could continue to be a problem for some time, as hot and dry conditions allow the fires to keep burning and there is an elevated risk of new fires.

What are the health concerns related to the smoke?

The smoke can cause health concerns, including irritated lungs and eyes. Officials are advising people to stay indoors to minimize their exposure to the smoke.

Is climate change related to the wildfires?

Researchers have found that human-caused climate change is making wildfires more likely and intense, although it is too early to directly link these wildfires to climate change.

What can people do to protect themselves from the smoke?

People can protect themselves from the smoke by staying indoors, avoiding strenuous outdoor activities, and following air quality alerts and advisories from local officials.