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
Hawaii8 - Key West
Florida6 - El Paso
Texas5 - Tucson
Arizona5 - Las Cruces
New Mexico5 - Mountain View
California5 - Gretna
Louisiana5 - Las Vegas
Nevada4 - Mobile
Alabama4 - Albany
Georgia4 - Gulfport
Mississippi4 - Durango
Colorado4
Largest cities
| City | Peak | Protect from – to |
|---|---|---|
| New York City, NY | 2 Low | — |
| Los Angeles, CA | 4 Moderate | 10 AM – 2 PM |
| Brooklyn, NY | 2 Low | — |
| Chicago, IL | 2 Low | — |
| Queens, NY | 2 Low | — |
| Houston, TX | 1 Low | — |
| Phoenix, AZ | 4 Moderate | 11 AM – 3 PM |
| Philadelphia, PA | 2 Low | — |
| San Antonio, TX | 2 Low | — |
| Manhattan, NY | 2 Low | — |
| San Diego, CA | 4 Moderate | 10 AM – 3 PM |
| The Bronx, NY | 2 Low | — |
| Dallas, TX | 1 Low | — |
| Jacksonville, FL | 4 Moderate | 11 AM – 3 PM |
| Fort Worth, TX | 2 Low | — |
| Austin, TX | 1 Low | — |
| Columbus, OH | 1 Low | — |
| Charlotte, NC | 3 Moderate | 11 AM – 2 PM |
| Indianapolis, IN | 2 Low | — |
| San Francisco, CA | 4 Moderate | 10 AM – 2 PM |
| Seattle, WA | 1 Low | — |
| Denver, CO | 3 Moderate | 11 AM – 2 PM |
| Washington, DC | 2 Low | — |
| Nashville, TN | 3 Moderate | 11 AM – 2 PM |
| Oklahoma City, OK | 0 Low | — |
| El Paso, TX | 5 Moderate | 10 AM – 3 PM |
| Boston, MA | 2 Low | — |
| Portland, OR | 1 Low | — |
| Detroit, MI | 1 Low | — |
| Las Vegas, NV | 4 Moderate | 10 AM – 2 PM |
| Memphis, TN | 3 Moderate | 11 AM – 2 PM |
| Louisville, KY | 3 Moderate | 1 PM – 2 PM |
| Baltimore, MD | 2 Low | — |
| Albuquerque, NM | 4 Moderate | 11 AM – 3 PM |
| Milwaukee, WI | 2 Low | — |
| Tucson, AZ | 5 Moderate | 11 AM – 3 PM |
| Fresno, CA | 3 Moderate | 11 AM – 2 PM |
| Sacramento, CA | 2 Low | — |
| Atlanta, GA | 3 Moderate | 11 AM – 3 PM |
| Miami, FL | 5 Moderate | 10 AM – 3 PM |
States
- Alabama
67 cities4 - Alaska
7 cities0 - Arizona
68 cities5 - Arkansas
38 cities3 - California
483 cities5 - Colorado
61 cities4 - Connecticut
78 cities2 - Delaware
11 cities2 - District of Columbia
30 cities2 - Florida
338 cities6 - Georgia
104 cities4 - Hawaii
42 cities8 - Idaho
24 cities2 - Illinois
226 cities3 - Indiana
82 cities3 - Iowa
40 cities2 - Kansas
36 cities3 - Kentucky
49 cities3 - Louisiana
62 cities5 - Maine
16 cities2 - Maryland
135 cities3 - Massachusetts
167 cities2 - Michigan
111 cities2 - Minnesota
97 cities2 - Mississippi
43 cities4 - Missouri
83 cities3 - Montana
7 cities2 - Nebraska
17 cities2 - Nevada
22 cities4 - New Hampshire
20 cities2 - New Jersey
208 cities2 - New Mexico
25 cities5 - New York
219 cities2 - North Carolina
89 cities3 - North Dakota
9 cities1 - Ohio
193 cities2 - Oklahoma
43 cities3 - Oregon
57 cities2 - Pennsylvania
102 cities2 - Rhode Island
29 cities2 - South Carolina
51 cities3 - South Dakota
11 cities2 - Tennessee
64 cities3 - Texas
244 cities5 - Utah
63 cities3 - Vermont
5 cities1 - Virginia
107 cities3 - Washington
121 cities2 - West Virginia
16 cities1 - Wisconsin
87 cities2 - Wyoming
10 cities3
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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