United States
UV Index in Delaware — Current UV Levels
Check the current UV index for 1 cities in Delaware. Select a city below for real-time UV data, hourly forecasts, and sun protection advice.
UV Index by City in Delaware
Sun Safety in Delaware
UV levels in Delaware vary by season, altitude, and proximity to water. The WHO recommends sun protection whenever UV reaches 3 or higher. Apply SPF 30+ before outdoor activities and reapply every 2 hours.
UV Index in Delaware: What to Know
Delaware sees moderate-to-high summer UV typical of the Mid-Atlantic, with peaks in July.
Across Delaware, the UV index peaks in the four hours around solar noon (roughly noon to 3 PM local time). The World Health Organization recommends sun protection whenever the UV index reaches 3 or higher: apply broad-spectrum SPF 30 at UV 3–5, SPF 50 at UV 6–7, and SPF 50+ with reapplication every two hours at UV 8 and above. Check the live, hour-by-hour UV index for Wilmington on the city pages above before heading outdoors.
Common Questions About UV in Delaware
When is the UV index highest in Delaware?
UV in Delaware is strongest between noon and 3 PM local time, and highest in the summer months when the sun sits highest in the sky. Check the hourly chart for Wilmington above to see today's exact peak.
Do I need sunscreen in Delaware?
Yes — whenever the UV index reaches 3 or higher, which in Delaware covers most of the daytime hours from spring through fall. Even on cloudy days, up to 80% of UV can reach the ground.
How accurate is this UV data for Delaware?
Our UV index for Delaware comes from Open-Meteo, which aggregates national weather-service models, and updates every 15 minutes. Levels follow the official WHO global solar UV index scale.