UV index today: hourly forecast for every U.S. city
The EPA's hour-by-hour UV index forecast for 4,317 U.S. cities with 10,000 or more people, updated every morning, with the hours when you need sun protection.
Highest UV index today
- Kailua-Kona
Hawaii12 - El Paso
Texas9 - Gallup
New Mexico9 - Jacksonville
Florida8 - New Orleans
Louisiana8 - Mobile
Alabama8 - Jackson
Mississippi8 - Mountain View
California8 - Sierra Vista
Arizona8 - St. Marys
Georgia8 - Charlotte
North Carolina7 - Nashville
Tennessee7
Largest cities
| City | Peak | Protect from – to |
|---|---|---|
| New York City, NY | 5 Moderate | 12 PM – 3 PM |
| Los Angeles, CA | 7 High | 10 AM – 5 PM |
| Brooklyn, NY | 4 Moderate | 11 AM – 2 PM |
| Chicago, IL | 5 Moderate | 11 AM – 4 PM |
| Queens, NY | 5 Moderate | 11 AM – 2 PM |
| Houston, TX | 8 Very high | 10 AM – 5 PM |
| Phoenix, AZ | 7 High | 12 PM – 4 PM |
| Philadelphia, PA | 5 Moderate | 12 PM – 2 PM |
| San Antonio, TX | 8 Very high | 11 AM – 3 PM |
| Manhattan, NY | 4 Moderate | 11 AM – 2 PM |
| San Diego, CA | 7 High | 10 AM – 5 PM |
| The Bronx, NY | 5 Moderate | 12 PM – 3 PM |
| Dallas, TX | 8 Very high | 11 AM – 5 PM |
| Jacksonville, FL | 8 Very high | 11 AM – 5 PM |
| Fort Worth, TX | 6 High | 11 AM – 5 PM |
| Austin, TX | 6 High | 11 AM – 5 PM |
| Columbus, OH | 6 High | 11 AM – 5 PM |
| Charlotte, NC | 7 High | 11 AM – 5 PM |
| Indianapolis, IN | 6 High | 11 AM – 5 PM |
| San Francisco, CA | 7 High | 10 AM – 4 PM |
| Seattle, WA | 0 Low | — |
| Denver, CO | 5 Moderate | 11 AM – 5 PM |
| Washington, DC | 5 Moderate | 12 PM – 4 PM |
| Nashville, TN | 7 High | 10 AM – 4 PM |
| Oklahoma City, OK | 5 Moderate | 11 AM – 5 PM |
| El Paso, TX | 9 Very high | 11 AM – 3 PM |
| Boston, MA | 4 Moderate | 11 AM – 1 PM |
| Portland, OR | 4 Moderate | 2 PM – 3 PM |
| Detroit, MI | 5 Moderate | 11 AM – 5 PM |
| Las Vegas, NV | 6 High | 1 PM – 4 PM |
| Memphis, TN | 7 High | 10 AM – 5 PM |
| Louisville, KY | 6 High | 11 AM – 5 PM |
| Baltimore, MD | 5 Moderate | 11 AM – 4 PM |
| Albuquerque, NM | 3 Moderate | 11 AM – 1 PM |
| Milwaukee, WI | 5 Moderate | 11 AM – 4 PM |
| Tucson, AZ | 4 Moderate | 10 AM – 4 PM |
| Fresno, CA | 5 Moderate | 11 AM – 4 PM |
| Sacramento, CA | 6 High | 11 AM – 5 PM |
| Atlanta, GA | 7 High | 11 AM – 5 PM |
| Miami, FL | 3 Moderate | 1 PM – 3 PM |
States
- Alabama
67 cities8 - Alaska
7 cities1 - Arizona
68 cities8 - Arkansas
38 cities7 - California
483 cities8 - Colorado
61 cities7 - Connecticut
78 cities5 - Delaware
11 cities6 - District of Columbia
30 cities5 - Florida
338 cities8 - Georgia
104 cities8 - Hawaii
42 cities12 - Idaho
24 cities6 - Illinois
226 cities7 - Indiana
82 cities6 - Iowa
40 cities5 - Kansas
36 cities6 - Kentucky
49 cities7 - Louisiana
62 cities8 - Maine
16 cities2 - Maryland
135 cities6 - Massachusetts
167 cities5 - Michigan
111 cities6 - Minnesota
97 cities3 - Mississippi
43 cities8 - Missouri
83 cities7 - Montana
7 cities5 - Nebraska
17 cities5 - Nevada
22 cities7 - New Hampshire
20 cities4 - New Jersey
208 cities5 - New Mexico
25 cities9 - New York
219 cities5 - North Carolina
89 cities7 - North Dakota
9 cities4 - Ohio
193 cities6 - Oklahoma
43 cities7 - Oregon
57 cities6 - Pennsylvania
102 cities6 - Rhode Island
29 cities5 - South Carolina
51 cities7 - South Dakota
11 cities5 - Tennessee
64 cities7 - Texas
244 cities9 - Utah
63 cities6 - Vermont
5 cities2 - Virginia
107 cities6 - Washington
121 cities4 - West Virginia
16 cities6 - Wisconsin
87 cities5 - Wyoming
10 cities7
The UV index scale
| UV index | Level |
|---|---|
| 0–2 | Low Low danger from the sun's UV rays for the average person. Wear sunglasses on bright days. If you burn easily, cover up and use broad-spectrum SPF 30+ sunscreen. Sand, water and snow reflect UV and add to your exposure. |
| 3–5 | Moderate Moderate risk from unprotected sun exposure. Stay in the shade near midday, when the sun is strongest. Wear protective clothing, a wide-brimmed hat and UV-blocking sunglasses, and apply broad-spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days, and after swimming or sweating. |
| 6–7 | High High risk from unprotected sun exposure: skin and eyes need protection. Reduce time in the sun around the middle of the day, seek shade, and wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses and broad-spectrum SPF 30+ sunscreen, reapplied every 2 hours. |
| 8–10 | Very high Very high risk: unprotected skin and eyes can be damaged and burn quickly. Minimize time in the sun around the middle of the day, seek shade, and cover up with clothing, a wide-brimmed hat, UV-blocking sunglasses and broad-spectrum SPF 30+ sunscreen, reapplied every 2 hours. |
| 11+ | Extreme Extreme risk: unprotected skin and eyes can burn in minutes. Try to avoid the sun around the middle of the day, stay in the shade, and use every protection: clothing, a wide-brimmed hat, UV-blocking sunglasses and broad-spectrum SPF 30+ sunscreen, reapplied every 2 hours. |
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