UC San Diego modelers show that spraying sea salt into Pacific clouds could weaken a potentially historic El Niño, but experts warn the risks, timing and politics are huge. The idea is a temporary, targeted tool — not a silver bullet.

Cool morning in San Francisco with inland highs in the mid‑70s. Coastal Flood Advisory runs through July 16; a small chance of thunderstorms Monday–Tuesday.

Cool, foggy Saturday with a Coastal Flood Advisory through July 16. Night tides may push water into low‑lying lots; expect breezy afternoons.

Mid-50s morning and a cool marine layer; highs near 67F with gusts to 23 mph. Beach Hazards Statement and Coastal Flood Advisory remain in effect.

Sneaker waves, rip currents and minor high‑tide flooding will make San Francisco shoreline visits risky through July 16.

Weeks-long south swell stripped sand from beaches from San Clemente to Santa Cruz, exposing rock, collapsing bluffs and prompting emergency coastal work.

Cool, cloudy mornings give way to gusty afternoons. A Beach Hazards Statement and Coastal Flood Advisory warn of sneaker waves and minor tide flooding July 9–16.

Cool, foggy mornings give way to breezy afternoons. A Beach Hazards Statement through Friday warns of sneaker waves and strong rip currents.

A Chestnut Hill–based group launched a free live wildfire map with address alerts as 2026's fire season intensifies.

Patchy morning fog with a slight chance of isolated showers; clearing to sunny and breezy by afternoon with highs near 67°F.

CalEnviroScreen 5.0 adds small‑air toxic site and diabetes indicators that could shift which California neighborhoods qualify as disadvantaged and where climate dollars flow.

Morning fog gives way to sun and highs near 68°F. Afternoon gusts may make waterfronts feel cooler; mariners should note a small-craft advisory.

DTSC has added microplastics to California’s Candidate Chemicals List, creating a route to review products that contain or shed tiny plastic particles.