Air quality

Check your air quality forecast in Washington, D.C., Maryland and Virginia, plus see safety tips.

Large wildfires have been burning for more than a week in Canada. News4’s Amelia Draper explains how the changing climate impacts these fires and why they are becoming more intense.

News4 Consumer Reporter Susan Hogan shares how humidifiers and air purifiers can help keep indoor air clean.

The Bay Area’s poor air quality is adding an extra twist to the San Francisco 49ers’ home opener in Santa Clara Thursday night.

The Environmental Protection Agency is delaying plans to tighten air quality standards for smog despite a recommendation by a scientific advisory panel to lower air pollution limits to protect public health.