Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Guidance
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Envirofacts

SunWise UV Index Mobile App

Envirofacts offers the SunWise UV Index mobile app, a user-friendly tool that provides quick, reliable access to ultraviolet (UV) radiation forecasts based on your location.

The app helps you make informed decisions about outdoor activity and sun exposure. The UV Index ranges from 1 (low) to 11+ (extreme). Learn more on the Learn About the UV Index page.

Download the SunWise UV Index App

  • iPhone users: Download SunWise UV Index from the Apple App Store

System Data Searches

Envirofacts

  • Multisystem Search
  • BR Search
  • GHG Search
  • GHG Query Builder
  • ICIS Search
  • ICIS Air Pollution Search
  • RADNET Radiation Search
  • RadNet Query Builder
  • RCRAInfo Search
  • NEI Search
  • NGGS Search
  • SDWIS Search
  • SEMS Search
  • UV Index Search

Toxic Release Inventory (TRI)

  • TRI Explorer
  • TRI Search
  • Form R Search
  • Form R & A Download
  • EZ Search
  • Customized Search
  • Pollution Prevention

Facility Registry Service (FRS) Query

  • FRS Query
  • FRS Query Builder
  • FRS Organization Query Form

Map of Cleanups in My Community

ECHO

SRS Search

Other Sites of Interest

  • Geospatial Download
  • EnviroMapper
  • MyEnvironment

Envirofacts

  • Search Tools
  • Topic Searches
  • About the Data
  • Developer & Data Services
  • Data Downloads
  • SunWise UV Index Mobile App
  • TRI Search
Contact Us About Envirofacts
Contact Us About Envirofacts to ask a question, provide feedback, or report a problem.
Last updated on July 25, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.