The primary pollutant from the smoke that’s causing the poor air quality is fine particulate matter (also known as PM-2.5), according to the state Department of Environmental Protection.

Air quality in the Chicago area has remained poor for three days in a row, the NBC 5 Storm Team reported Wednesday morning.

What is happening with air quality right now? Many North Americans have never experienced local air quality as bad as it's been this week. The air quality has been poor across the most densely ...

The air quality in Arlington has reached the worst level on the scale -- "hazardous." As of 9 a.m. the federal government website AirNow says Arlington's AQI, or air quality index, is 313.

Bad air, now what? Knowing your air quality is bad is one thing, but understanding why it’s bad and how to fix it can take some serious detective skills, and in some cases, ...

The national average air quality index in 2023 was 38, according to IQAir, a Swiss air quality technology company. More than 100 nations had cleaner air , on average, than the United States, and ...

Keep in mind that HVACs mainly filter air from inside, so it’s important to choose the right high-efficiency filter that’s going to capture those unwanted particles lingering in your indoor air.