The air quality index measures PM2.5, less than 2.5 microns particles, to determine the intensity of air pollution in cities.

The vast majority of homes destroyed in the Eaton fire were outside of Cal Fire's "very high" fire hazard severity zones, yet ...

As hazardous chemicals pollute the air after devastating wildfires, officials call for increased monitoring to protect ...

In a nutshell A single day of wildfire smoke can contribute over 20% of toxic pollutants that accumulate on urban surfaces ...

Crews will remain on scene throughout the night to ensure containment efforts continue. At this time, there are no active ...

Contra Costa County officials have lifted a shelter-in-place order that was placed after a fire erupted Saturday at the ...

Locals share how to be a responsible and respectful traveler when visiting Los Angeles in the wake of the devastating fires.

NOAA satellites paired with AI data analysis also generate alerts but over a wider area. They can detect heat signatures, map ...

The North Fork Fire in McDowell County has burned an estimated 200 acres in an area of heavy tree damage from Hurricane Helene. This has lead to higher smoke production that is now impacting air ...

All wildfires burning in Southern California were largely contained as of Thursday morning, even after a new fire ignited in ...

After a week of smoke, ash and flames, officials with Cal Fire San Diego announced Thursday that the Border 2 Fire, located in the Otay Mountain Wilderness Area, is now 100% contained.

Fire spotters used to watch with binoculars from forest towers. Now, technology can help forecast fire behavior, but human ...