National Weather Service
HOME
FORECAST
Local
Graphical
Aviation
Marine
Rivers and Lakes
Hurricanes
Severe Weather
Fire Weather
Sun/Moon
Long Range Forecasts
Climate Prediction
PAST WEATHER
Past Weather
Heating/Cooling Days
Monthly Temperatures
Records
Astronomical Data
WEATHER SAFETY
Safety Campaigns
Air Quality
Cold
Drought
Floods
Fog
Heat
Hurricanes
Lightning
Rip Currents
Safe Boating
Space Weather
Thunderstorms
Tornadoes, Wind, Hail
Tsunamis
Wind Safety
Wildland Fires
Winter Weather
INFORMATION CENTER
Weather-Ready Nation
StormReady
TsunamiReady
Owlie Kid's Page
Cooperative Observers
SKYWARN Storm Spotters
NOAA Weather Radio
Program Offices
Daily Briefing
Forecast Models
GIS Data Portal
Brochures, Posters, etc.
Damage/Fatality/Injury Statistics
NEWS
NWS News
Events
Social Media
Pubs/Brochures/Booklets
NWS Media Contacts
SEARCH
Search For
NWS
All NOAA
ABOUT
About NWS
Organization
Strategic Plan
For NWS Employees
International
National Centers
Products and Services
Contact Us
Glossary
Protect Yourself, Family and Pets from Excessive Ultraviolet (UV) Radiation
What is the UV Index?
What is UV radiation?
How does UV vary in a day?
How do clouds, elevation, surface type and aerosols affect UV radiation?
How is the UV Index determined?
What US cities does UV Index cover?
How to prevent UV damage?
Is the Index validated?
Daily UV Forecast
Map of Danger Areas
Text List of UV Levels by City
Monthly Means and Maximums
Annual Time Series of UV Index Forecasts
Past UV Bulletins
NWS Local Forecasts
Protect
Yourself, Family and Pets from
Excessive Ultraviolet (UV) Radiation
