Learn what the air quality index (AQI) means, how it impacts your health, and how to stay safe when pollution is high.

Southern California air quality monitors issued a dust and ash alert for all of Los Angeles County as strong Santa Ana winds ...

A wildfire erupted near Castaic Lake Wednesday, sending plumes of smoke into neighboring Ventura County areas. Here's what to ...

Wear a tight-fitting N95 mask at the bare minimum, but a P100 is better, experts say. Wear long sleeves, eye protection, closed-toed shoes and cut-resistant gloves. Clean or decontaminate anything ...

Millions of people living in California have been warned against doing any outdoor activity because of bad air quality amid ...

The air quality index (AQI) in many LA regions looks good, but that doesn't mean the air is safe. Why it matters: The AQI in your weather app doesn't account for all pollutants caused by wildfires.

On Monday at 11:45 p.m. an air quality alert was issued valid until Tuesday at 10 p.m. The alert is for Calabasas and Agoura ...

The UK Health Security Agency has issued amber alerts for all of England which will ... caused by southerly winds bringing warmer air. The winds could be “severe” for the Outer Hebrides ...

All the ingredients for a very cold night are here. We'll have clear skies, light winds, dry air and a cold airmass in place. Temps are expected to fall to the upper teens and low 20's.

A large area of greater Los Angeles had unhealthy air Friday, due to particulate matter from large wildfires. Here are tips for breathing cleaner air indoors if it's smoky outside.

"We just try to stay indoors." This week, as the wildfires raged and smoke billowed across Los Angeles, officials issued air quality alerts, schools canceled classes and scientists warned about ...