Smoke from wildfires in Canada and Minnesota is sending air quality indexes to record levels, posing a hazard for millions of people. Here are tips for how to breathe easier in your home.

A sprawling Reddit conversation suggests air purifiers do more than pad affiliate-heavy shopping guides: many people who already own them said the devices were worth the cost. Among commenters ...

Interest in air filters and purifiers is spiking as wildfire smoke spreads, including questions about how to build a homemade air purifier. On Friday, the air in a large section of the U.S. — from ...