UV Index for Napa County, California

UV Index Forecast for Napa County, California

Below is an interactive map of Napa County, ca, USA. The markers on the map identify large, populated cities in Napa County. If you hover over a marker, it will display the city name and the current UV index. The color of the city markers also references the current UV risk level.

The city with the highest UV index this hour (1:00 pm) in Napa County, ca is Deer Park at 8.6. Today, the peak UV index for Napa County will be in St. Helena, ca around 1:00 pm at 8.6 (Very High). Over the next five days the peak UV index in Napa County will be 9.5 (Very High) and will occur on Wednesday, May 18th in St. Helena, ca around 1:00 pm.

Range 1-2 3-5 6-7 8-10 11+
Risk Low Moderate High Very High Extreme

Last Updated 46 minutes ago

UV Index Forecast by City in Napa County

Below is a list of cities in Napa County, ca where we track and forecast the UV index. Click on a city name to get the current UV index, hourly UV index for the day and the next five days.