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

As of 3:12 PM PDT on March 20, 2025, all 50 cities in Contra Costa County, CA in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Richmond, CA with a reading of 3.8.

Over the next 24 hours, the highest UV Index reading in Contra Costa County, CA is expected to be 5.2 in Richmond between 1:00 PM - 2:00 PM PDT tomorrow.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Contra Costa County, CA as of 3:12 PM PDT, March 20, 2025

Current UV Index in Cities in Contra Costa County, CA

3:12 PM PDT, March 20, 2025