Today's UV index: 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 - Miami
Florida9 - Gautier
Mississippi9 - Stafford
Texas9 - Tanque Verde
Arizona9 - Chaparral
New Mexico9 - San Diego
California8 - Shenandoah
Louisiana8 - Durango
Colorado8 - Hanahan
South Carolina8 - Tillmans Corner
Alabama8 - Boulder City
Nevada8
Largest cities
| City | Peak | Protect from – to |
|---|---|---|
| New York City, NY | 4 Moderate | 11:00 – 16:00 |
| Los Angeles, CA | 7 High | 10:00 – 17:00 |
| Brooklyn, NY | 4 Moderate | 11:00 – 16:00 |
| Chicago, IL | 4 Moderate | 11:00 – 16:00 |
| Queens, NY | 4 Moderate | 11:00 – 16:00 |
| Houston, TX | 7 High | 11:00 – 16:00 |
| Phoenix, AZ | 7 High | 10:00 – 16:00 |
| Philadelphia, PA | 5 Moderate | 11:00 – 16:00 |
| San Antonio, TX | 8 Borobor | 11:00 – 17:00 |
| Manhattan, NY | 4 Moderate | 11:00 – 16:00 |
| San Diego, CA | 8 Borobor | 10:00 – 17:00 |
| The Bronx, NY | 4 Moderate | 11:00 – 16:00 |
| Dallas, TX | 7 High | 11:00 – 17:00 |
| Jacksonville, FL | 7 High | 11:00 – 16:00 |
| Fort Worth, TX | 7 High | 11:00 – 17:00 |
| Austin, TX | 8 Borobor | 11:00 – 17:00 |
| Columbus, OH | 5 Moderate | 11:00 – 17:00 |
| Charlotte, NC | 3 Moderate | 12:00 – 16:00 |
| Indianapolis, IN | 5 Moderate | 12:00 – 17:00 |
| San Francisco, CA | 8 Borobor | 10:00 – 17:00 |
| Seattle, WA | 3 Moderate | 12:00 – 15:00 |
| Denver, CO | 6 High | 11:00 – 16:00 |
| Washington, DC | 5 Moderate | 11:00 – 16:00 |
| Nashville, TN | 6 High | 10:00 – 16:00 |
| Oklahoma City, OK | 6 High | 11:00 – 17:00 |
| El Paso, TX | 8 Borobor | 10:00 – 17:00 |
| Boston, MA | 4 Moderate | 11:00 – 15:00 |
| Portland, OR | 4 Moderate | 11:00 – 16:00 |
| Detroit, MI | 4 Moderate | 12:00 – 16:00 |
| Las Vegas, NV | 7 High | 10:00 – 16:00 |
| Memphis, TN | 6 High | 11:00 – 16:00 |
| Louisville, KY | 5 Moderate | 11:00 – 17:00 |
| Baltimore, MD | 5 Moderate | 11:00 – 16:00 |
| Albuquerque, NM | 7 High | 10:00 – 17:00 |
| Milwaukee, WI | 4 Moderate | 11:00 – 16:00 |
| Tucson, AZ | 8 Borobor | 10:00 – 16:00 |
| Fresno, CA | 6 High | 11:00 – 16:00 |
| Sacramento, CA | 6 High | 11:00 – 16:00 |
| Atlanta, GA | 4 Moderate | 12:00 – 17:00 |
| Miami, FL | 9 Borobor | 10:00 – 17:00 |
States
- Alabama
67 cities8 - Alaska
7 cities1 - Arizona
68 cities9 - Arkansas
38 cities7 - California
483 cities8 - Colorado
61 cities8 - Connecticut
78 cities5 - Delaware
11 cities6 - District of Columbia
30 cities6 - Florida
338 cities9 - Georgia
104 cities8 - Hawaii
42 cities12 - Idaho
24 cities6 - Illinois
226 cities7 - Indiana
82 cities6 - Iowa
40 cities6 - Kansas
36 cities7 - Kentucky
49 cities7 - Louisiana
62 cities8 - Maine
16 cities4 - Maryland
135 cities6 - Massachusetts
167 cities5 - Michigan
111 cities5 - Minnesota
97 cities5 - Mississippi
43 cities9 - Missouri
83 cities7 - Montana
7 cities4 - Nebraska
17 cities6 - Nevada
22 cities8 - 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 cities5 - Pennsylvania
102 cities6 - Rhode Island
29 cities5 - South Carolina
51 cities8 - South Dakota
11 cities5 - Tennessee
64 cities7 - Texas
244 cities9 - Utah
63 cities7 - Vermont
5 cities3 - Virginia
107 cities7 - Washington
121 cities4 - West Virginia
16 cities6 - Wisconsin
87 cities5 - Wyoming
10 cities6
UV index scale
| UV index | Level |
|---|---|
| 0–2 | Low Average person chak sun's UV rays chak low danger. Bright days chak sunglasses wear kha. If you burn easily, cover up ani broad-spectrum SPF 30+ sunscreen use kha. Sand, water ani snow chak UV reflect kha ani exposure add kha. |
| 3–5 | Moderate Unprotected sun exposure chak moderate risk. Midday chak shade chak stay kha, when sun is strongest. Protective clothing, wide-brimmed hat ani UV-blocking sunglasses wear kha, ani broad-spectrum SPF 30+ sunscreen every 2 hours apply kha, even cloudy days chak, ani swimming or sweating chak after. |
| 6–7 | High Unprotected sun exposure chak high risk: skin ani eyes chak protection need kha. Middle of the day chak sun chak time reduce kha, shade seek kha, ani protective clothing, wide-brimmed hat, UV-blocking sunglasses ani broad-spectrum SPF 30+ sunscreen wear kha, every 2 hours reapplied. |
| 8–10 | Borobor Very high risk: unprotected skin ani eyes damaged kha ani quickly burn kha. Middle of the day chak sun chak time minimize kha, shade seek kha, ani clothing, wide-brimmed hat, UV-blocking sunglasses ani broad-spectrum SPF 30+ sunscreen chak cover up kha, every 2 hours reapplied. |
| 11+ | Extreme Extreme risk: unprotected skin ani eyes minutes chak burn kha. Middle of the day chak sun avoid kha try kha, shade chak stay kha, ani every protection use kha: clothing, wide-brimmed hat, UV-blocking sunglasses ani broad-spectrum SPF 30+ sunscreen, every 2 hours reapplied. |
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