Historical UV Index Data for Washington, DC

Historical UV Index Data for Washington, DC

Up-to-date through December 2022

This web page contains historical UV index data for Washington, DC. The UV index data is for the years between 1994 and 2022. We provide you with the monthly average UV index and the daily average UV index for the selected year. You can also scroll to the bottom of this web page to view notable UV index data stats for Washington, DC over the last 28 years.

Select a year in the below dropdown menu.

Average Monthly UV Index - Washington, DC

Average Daily UV Index - Washington, DC

Over the last 28 years, the month with the highest UV index average was July, with an average UV index of 10.4. The highest recorded UV index for Washington, DC was 11.46 on June 9, 2020. The year with the most months reaching extreme UV index levels was 2017 with 2 months (June, July).