Smoke from wildfires in Canada and Minnesota is sending air quality indexes to record levels, posing a hazard for millions of ...

Posters also cautioned against ionizer-style products marketed with extra gimmicks.

This is a developing story. For the latest local updates head to LAist.com and sign up for breaking news alerts. Interest in air filters and purifiers is spiking in Southern California, including ...

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 ...

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