The Minnesota Pollution Control Agency (MPCA) has issued an air quality alert for all of Minnesota until 9 a.m. on Monday.

What is the Air Quality Index? The Air Quality Index is used nationwide to measure the severity of air pollution and categorize the health risks that are involved with various levels of pollution.

"Avoid all physical activity outdoors," the EPA advises at this level. According to the EPA's map, Picture Rocks and Marana ...

The current infrastructure also isn’t set up to fully account for the shifting behavior of wildfire smoke, which can travel ...

Air pollution exposure, both before and after birth, significantly escalates the risk of respiratory infections in children.

What is the Air Quality Index? The Air Quality Index reflects the density of five pollutants in the air: ground-level ozone, particulates, carbon monoxide, nitrogen dioxide, and sulfur dioxide.

The Illinois EPA declared an Air Pollution Action Day in the Chicagoland area. Find out which counties are affected and what you should look out for.

ISLAMABAD, Jul 11 (APP): Minister of State for Interior Talal Chaudhry on Friday formally inaugurated the vehicle emission ...

The Air Quality Index (AQI) uses a color-coded scale to inform the public about air pollution levels and potential health risks.

Wildfires in Canadian provinces of Manitoba and Saskatchewan are creating smoke visible in Michigan. How to use the air quality index.

The U.S. Air Quality Index (AQI) is the Environmental Protection Agency’s tool for reporting outdoor air quality and health.