It's Going to Be a Scorcher: Experts Predict Extreme UV Index Ratings This Memorial Day

National Don't Fry Day, the Friday before Memorial Day weekend, encourages sun-safety awareness.

 A dozen U.S. cities are expected to have extreme ultraviolet (UV) index ratings (10+) this Memorial Day and throughout the summer, according to  data from the National Weather Service.

National Don't Fry Day, the Friday before Memorial Day weekend, encourages sun-safety awareness and serves as a reminder to protect skin from the harmful effects of the sun's UV rays.

The UV index changes seasonally and can range from 0 (nighttime) to 15-16. The higher the number, the greater the exposure to skin and eye-damaging UV radiation.

• 0-2: No to minimal sun protection needed
• 3-7: Moderate to high protection needed – seeking shade during late morning through mid-afternoon; generously applying broad-spectrum SPF 30+ sunscreen on exposed skin; wearing protective clothing, a wide-brimmed hat and sunglasses
• 8+: Very high to extreme protection needed – seeking shade; generously applying broad-spectrum SPF 30+ sunscreen on exposed skin; wearing protective clothing, a wide-brimmed hat and sunglasses

The U.S. cities with the highest average UV index in 2022 were:

1. Honolulu, Hawaii (11.8)
2. Miami, Fla. (11.5)
3. San Juan, Puerto Rico (11.5)
4. Albuquerque, N.M. (11)
5. New Orleans, La. (10.8)
6. Phoenix, Ariz. (10.7)
7. Tampa, Fla. (10.5)
8. Mobile, Ala. (10.3)
9. Jackson, Miss. (10.2)
10. Cheyenne, Wyo. (10)
11. Denver, Colo. (10)
12. Los Angeles, Calif. (10)

The dangers of UV rays, including premature skin aging and skin cancer, are clear and universally recognized. 

"Skin cancer is a significant and largely preventable public health concern," says Patti Farris, M.D., a dermatologist  in Metairie, LA. "When going outdoors, especially when the UV index is high, individuals need sun protection to minimize their risk for skin cancer. That can be a hat and protective clothing, and broad-spectrum sunscreen with a minimum of SPF 30 for skin exposed to the sun is a must."

"Sunscreens are important tools for preventing and reducing the risk of skin cancer and UV-induced skin damage and should be part of your daily health and safety routine, just like brushing your teeth or using a seat belt," adds Alexandra Kowcz, chief scientist, Personal Care Products Council. "Our industry provides consumers with safe and innovative sunscreen products to help protect them and their families from the harmful effects of the sun."