Contra Costa County, CA: Current UV Index and Hourly Forecast

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As of 7:31 AM PDT on March 22, 2026, all 50 cities in Contra Costa County, CA in our database have a UV Index reading of 0, indicating no radiation from the sun.

Over the next 24 hours, the highest UV Index reading in Contra Costa County, CA is expected to be 7 in San Ramon between 1:00 PM - 2:00 PM PDT today.

Search Cities in Contra Costa County, CA

Current UV Index in Cities in Contra Costa County, CA

• Acalanes Ridge - 0
• Alamo - 0
• Alhambra Valley - 0
• Antioch - 0
• Bay Point - 0
• Bethel Island - 0
• Blackhawk - 0
• Brentwood - 0
• Byron - 0
• Camino Tassajara - 0
• Castle Hill - 0
• Clayton - 0
• Clyde - 0
• Concord - 0
• Contra Costa Centre - 0
• Crockett - 0
• Danville - 0
• Diablo - 0
• Discovery Bay - 0
• East Richmond Heights - 0
• El Cerrito - 0
• Hercules - 0
• Kensington - 0
• Knightsen - 0
• Lafayette - 0
• Martinez - 0
• Montalvin Manor - 0
• Moraga - 0
• Norris Canyon - 0
• North Gate - 0
• North Richmond - 0
• Oakley - 0
• Orinda - 0
• Pacheco - 0
• Pinole - 0
• Pittsburg - 0
• Pleasant Hill - 0
• Port Costa - 0
• Reliez Valley - 0
• Richmond - 0
• Rodeo - 0
• Rollingwood - 0
• San Miguel - 0
• San Pablo - 0
• San Ramon - 0
• Saranap - 0
• Shell Ridge - 0
• Tara Hills - 0
• Vine Hill - 0
• Walnut Creek - 0