Indoor air can be three to five times more polluted than outdoor air, according to the U.S. Environmental Protection Agency, which also notes that most people spend 90 percent of their time indoors.

In recent days, the air quality index has been at "Unhealthy" levels in New York City from the Canadian wildfires smoke. People have been warned to avoid outdoor physical activities. Those who spend ...

Air pollution processes encompass a range of chemical, physical, and biological transformations that occur in the atmosphere as pollutants are emitted from a variety of sources – including industrial, ...

How to test the air quality in your home, according to experts. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Maintaining good indoor air ...

We envision our homes as refuges from the outside world, including all the allergens and pollution in the air. And while it’s true that they block some of the worst excesses of outdoor pollution, they ...

Smoke from wildfires in Canada has drifted into the U.S., prompting air quality alerts for Americans as it continues to spread. But when officials and forecasters classify a city's air as "unhealthy" ...

After wildfires burn through urban areas, publicly available air quality assessments may not adequately warn people about harmful air pollutants. Expanding today’s air quality metrics requires more ...

In the wake of COVID-19 and widespread wildfires, demand skyrocketed for air cleaners, machines that could remove potentially harmful particles from the air in a home. Manufacturers responded by ...

CPR News conducted air quality testing for two days in February and June 2023. For the first, we rented a pair of handheld sensors that detect and count ultrafine particles emitted from vehicles. We ...

A researcher in protective gear collects samples from a Topanga home burned in the Palisades fire. (Nicholas Spada, UC Davis) While the fires that devastated Los Angeles in January are now contained, ...