Is it safe to exercise outdoors when the air quality is bad? - The Washington Post

When wildfire smoke leads to air quality alerts, exercisers can take precautions to stay safer and lower health risks.

Can I Exercise in Poor Air Quality? Here's What's Safe — and Dangerous — To Do Right Now

Intense smoke fills NYC and forces a 'code red' in Philadelphia as millions from the East Coast to Canada suffer from Quebec's wildfires

Exercising outdoors on poor air quality days?

Outdoor workers endure wildfire smoke, hazardous air quality - The Washington Post

Air pollution - Wikipedia

Early start to wildfire season puts air quality front of mind for coaches and athletes

What is the Air Quality Index? Here's How to Stay Safe - The New York Times

The AQI Dilemma: Is it Safe to Exercise? – GU Energy Labs

Is It Safe to Exercise Outdoors When the Air Quality Is Bad?

Bad Air Day NIH News in Health