Environmental groups filed petitions asking regulators to require stormwater permits for big-box stores and warehouses, arguing parking‑lot runoff is a major source of toxic pollution.

Patchy fog Saturday morning in Downtown LA; highs near 77°F. Offshore waters under advisories and a moderate sundowner gust risk Sunday–Monday.

New research shows wildfire smoke is eating into years of smog improvements, raising ozone and public‑health risks across the U.S. and straining monitoring systems. Experts say more sensors and better models are needed to protect communities.

Cool, foggy mornings clear to sunshine with highs near 79°F Friday. Breezy afternoons and a slight weekend cooldown expected.

Patchy morning fog clears to mostly sunny skies and a high near 80°F. A deeper marine layer arrives this weekend, bringing cloudier beach mornings.

Three companies agreed to pay more than $4 million to settle federal claims after a 2020 gender‑reveal smoke device sparked the El Dorado Fire that killed a U.S. Forest Service firefighter.

Patchy morning fog clears to mid‑70s sun across downtown. Boaters should watch a possible midweek Gale Watch and building seas.

Morning fog clears inland to sunny highs near 78°F, with gusty sea breezes and a Small Craft Advisory for outer waters into the morning. Bring layers and boaters stay cautious.

A late-night wildfire was logged in Los Angeles County and listed as LAC-188677. Officials say it is burning on private land; cause and containment remain unknown.

Morning fog clears to sunny afternoons with highs near 78°F. High surf and choppy seas affect the coast into Sunday night.

Arizona joined California and Nevada in a short-term deal to curb Colorado River use — a proposal designed to prop up Lake Mead and Lake Powell while long-term rules are negotiated. Officials say it could spare farms and cities from abrupt federal cuts.

An L.A. judge denied Sterigenics' bid to dismiss Maywood residents' ethylene oxide lawsuits, keeping claims alive and setting trial dates in early 2027.

Mostly sunny Friday with a high near 71°F. Patchy late-night fog and coastal advisories could affect boaters and early commuters.