With Michigan under an air quality alert, health officers are urging residents to be cautious. Smoke from Canadian wildfires has caused the air quality in Michigan to be ...

The Illinois Environmental Protection Agency has issued an Air Pollution Action Day for Tuesday, July 15. Here's what to know ...

Northern Minnesota and northern Wisconsin remain under an Air Quality Alert Monday due to wildfire smoke. Conditions are ...

An air quality advisory that was set to last through Monday has been lifted, air district officials said. Over the weekend, ...

The newer AQHI takes into account the health effects and environmental concerns associated with varying concentrations of pollution, two factors the AQI does not. AQHI measures the impact of air ...

Stay indoors as New York issues an air quality warning. AQI over 100 poses risks to vulnerable groups. Prepare for weather changes through midweek.

The DEC has issued an air quality health advisory for most of upstate New York due to elevated levels of fine particulate matter in the air.

Wisconsin, Minnesota and Indiana all have air quality alerts, while Chicago's air quality currently ranks in the "unhealthy for sensitive groups" category.

The DEC has issued an air quality health advisory for most of upstate New York due to elevated levels of fine particulate ...

While haze levels have declined in most national parks, more intense wildfires threaten to reverse this trend. See where your favorite park stands.