SOUTH LAKE TAHOE, Calif. — An inversion has formed at Lake Tahoe. Tahoe’s mountaintops are peaking out above the inversion layer Friday morning. Inversions are stable air masses where cooler air is ...

OAKLAND, Calif. (KTVU) - The air quality wasn’t so good on Friday for the majority of the Bay Area. The average AQI was 92, or moderate, throughout the region, according to the EPA’s Air Now website.

A shallow marine inversion kept polluted air trapped in the L.A. Basin for days. (Paul Duginski / Los Angeles Times) One good thing about Santa Ana winds: They really clear the air. During the first ...

The Treasure Valley is experiencing a weak inversion, with impacts to air quality expected to last through the end of the week. Inversions are a reverse of normal behavior. Typically in the summer, ...

LITTLE ROCK, Ark. — When we get higher in the atmosphere temperatures normally decrease, with the ground acting as a heat source. When it comes to temperature inversion the opposite is true. We find ...

SAN DIEGO (KGTV) — The foggy season has arrived in San Diego, often called May Gray and June Gloom. But how does it form, and why does it clear some days and not others? Let’s start with why we see ...

Though the Donnell fire containment remained at just 2 percent Tuesday, the Tuolumne County blaze has not spread since Monday, according to the U.S. Forest Service. Monday night, the Forest Service ...