Harvard scientists reveal how wildfire smoke, filled with toxic particles, is emerging as a growing health risk fueled by climate change.

Smoke from two wildfires — one in south-central Utah, the other near the Grand Canyon — has made its way to the Wasatch Front, causing hazy conditions.

Bad news for vacationers — a massive wildfire that shut down the Grand Canyon's North Rim has grown even more. Here's the latest.

The residents of New York City were among the more than 132 million people in the country experiencing what the National Weather Service calls a "major HeatRisk," level 3 out of 4. The NWS and Centers for Disease Control and Prevention created the experimental HeatRisk tool to help assess possible health risks tied to extreme heat and humidity.

It will be hot and humid in Maine on Tuesday. Feel-like temps will approach the upper 90s. Some thin wildfire smoke remains within the atmosphere, impacting the air quality. A heat advisory will go into effect for Coastal York County from 11 AM to 8 PM.

On July 28, 2025, in Buca, Izmir, Turkey, @byizmir35 shared a video of a wildfire near the area. In the video, the author films from a balcony and spots thick smoke plumes rising dramatically into the sky,

Smoke from a fire burning in the Olympic National Park is making its way into Puget Sound, and it’s causing a haze in the sky in some areas.

This week’s hot and humid weather, compounded by hazy conditions caused by Canadian wildfires, could lead to problems for those with underlying respiratory issues, unless one stays inside.