California UV Index

Live UV index and hourly forecasts for 10 cities in California. San Diego sees the state's strongest sun with an average UV index of 7.8, while Los Angeles leads with about 284 sunny days a year.

UV Index in Anaheim Avg UV 7.5 · 280 sunny days/yr · Peak: April - October UV Index in Carlsbad Avg UV 7.3 · 263 sunny days/yr · Peak: April - October UV Index in Irvine Avg UV 7.4 · 281 sunny days/yr · Peak: April - October UV Index in Los Angeles Avg UV 7.2 · 284 sunny days/yr · Peak: March - October UV Index in Palo Alto Avg UV 6.9 · 261 sunny days/yr · Peak: April - October UV Index in San Diego Avg UV 7.8 · 266 sunny days/yr · Peak: March - October UV Index in San Francisco Avg UV 6.5 · 259 sunny days/yr · Peak: April - September UV Index in San Jose Avg UV 7.1 · 257 sunny days/yr · Peak: April - October UV Index in Santa Barbara Avg UV 7.2 · 283 sunny days/yr · Peak: April - October UV Index in Santa Clara Avg UV 7.0 · 260 sunny days/yr · Peak: April - October

Looking for a different California city? Use the UV search tool on our homepage for live UV data anywhere in the US, or browse all cities.