Breathing in ozone pollution can lead to health impacts like chest pain, coughing, throat irritation, congestion and difficulty breathing. Kids, older adults and anyone with any kind of respiratory condition like asthma,

That’s according to IQAir’s Air Quality and Pollution City Ranking, which is updated hourly, the air pollution advocacy organization explains. It’s important to note that wh

Despite expected rain Sunday night, Canadian wildfire smoke will continue to impact Michigan on Monday, officials say.

While officials continue to monitor the smoke lingering in Michigan, here's how to read the Air Quality Index: The AQI features six color-coded categories: green, yellow, orange, red, purple and maroon. Each category has corresponding values and levels of concern: Maroon indicates hazardous air (301 plus).

Some areas may only see a few hours of alert-level smoke concentrations due to the relatively fast movement of the north-south band of smoke.

An air quality alert has been issued for particle pollution in all New Hampshire counties. The National Weather Service said the air quality alert went into effect at 2:13 p.m. and will be in effect until 10 a.m. Monday.

Michigan's air, which has been tainted for several days by wafting smoke from Canadian wildfires, is expected to improve over the weekend, state officials said. But don't breathe too deep a sigh of relief, experts warned: Conditions could decline again early next week.

An air quality alert remains in effect for the entire Chicago area, with another "Air Pollution Action Day" alert declared as wildfire smoke from Canadian wildfires continues to impact parts of the Midwest.

Another air quality alert has been issued for the NYC area today, and it has expanded to include Long Island and New Jersey.

The special air quality statement was lifted for Montreal on Sunday morning while some statements are still in effect for parts of the Eastern Townships and northern Quebec after two days of warnings.