UV Index in Flagstaff, United States
Last updated: March 1, 2025
Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.| | 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 |
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| UVI | 1 | 2 | 3 | 6 | 8 | 9 | 9 | 8 | 5 | 3 | 1 | 1 | 0 |
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| Exposure | low | moderate | high | very high | moderate | low |
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| Time to burn | 45 min | 30 min | 25 min | 15 min | 30 min | 45 min |
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UV Index throughout the year in Flagstaff
UV Index (UVI) in Flagstaff. Generated using Copernicus Atmosphere Monitoring Service information. Data for the period from January 2022 to January 2023.| | 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 |
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| January | 0 | 1 | 1 | 3 | 4 | 5 | 5 | 4 | 3 | 1 | 1 | 0 | 0 |
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| February | 1 | 1 | 2 | 4 | 6 | 8 | 8 | 6 | 4 | 2 | 1 | 1 | 0 |
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| March | 1 | 2 | 3 | 6 | 8 | 9 | 9 | 8 | 5 | 3 | 1 | 1 | 0 |
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| April | 1 | 3 | 5 | 8 | 10 | 11 | 11 | 9 | 6 | 4 | 2 | 1 | 0 |
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| May | 2 | 3 | 6 | 9 | 11 | 12 | 12 | 10 | 7 | 4 | 2 | 1 | 1 |
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| June | 2 | 3 | 6 | 9 | 11 | 13 | 12 | 11 | 8 | 5 | 3 | 1 | 1 |
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| July | 1 | 3 | 6 | 9 | 11 | 13 | 12 | 11 | 8 | 5 | 3 | 1 | 1 |
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| August | 1 | 3 | 5 | 8 | 10 | 12 | 12 | 10 | 7 | 5 | 2 | 1 | 1 |
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| September | 1 | 2 | 4 | 7 | 9 | 11 | 10 | 9 | 6 | 3 | 2 | 1 | 0 |
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| October | 1 | 2 | 3 | 5 | 7 | 8 | 8 | 6 | 4 | 2 | 1 | 0 | 0 |
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| November | 1 | 1 | 2 | 4 | 6 | 6 | 6 | 4 | 2 | 1 | 1 | 0 | 0 |
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| December | 0 | 1 | 1 | 3 | 4 | 4 | 4 | 3 | 2 | 1 | 1 | 0 | 0 |
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Compare Flagstaff UV Index to other United States cities
Flagstaff's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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| Chicago | 3 | 4 | 6 | 8 | 9 | 10 | 10 | 9 | 8 | 6 | 4 | 2 |
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| Brooklyn | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
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| New York City | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
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| Los Angeles | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
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| Houston | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |
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| Flagstaff | 5 | 8 | 9 | 11 | 12 | 13 | 13 | 12 | 11 | 8 | 6 | 4 |
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Compare Flagstaff's UV Index to other cities in the world
Flagstaff's solar exposure compared to other cities in the world. Generated using Copernicus Atmosphere Monitoring Service information.| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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| Oslo | 1 | 2 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |
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| Berlin | 1 | 2 | 4 | 5 | 7 | 8 | 7 | 7 | 5 | 3 | 2 | 1 |
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| London | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
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| Toronto | 2 | 4 | 5 | 8 | 9 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |
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| New York City | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
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| Athens | 3 | 4 | 6 | 8 | 10 | 10 | 10 | 10 | 8 | 7 | 4 | 3 |
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| Tokyo | 3 | 5 | 8 | 9 | 11 | 11 | 11 | 11 | 10 | 7 | 5 | 4 |
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| Los Angeles | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
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| Shanghai | 5 | 6 | 8 | 10 | 10 | 11 | 12 | 11 | 11 | 8 | 6 | 4 |
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| Auckland | 14 | 14 | 10 | 7 | 4 | 3 | 3 | 5 | 7 | 10 | 11 | 13 |
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| Dubai | 6 | 7 | 11 | 11 | 12 | 11 | 10 | 11 | 10 | 8 | 6 | 5 |
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| Sydney | 14 | 13 | 11 | 8 | 5 | 3 | 4 | 6 | 8 | 10 | 12 | 14 |
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| Flagstaff | 5 | 8 | 9 | 11 | 12 | 13 | 13 | 12 | 11 | 8 | 6 | 4 |
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| Miami | 6 | 9 | 10 | 12 | 12 | 13 | 12 | 12 | 11 | 10 | 8 | 6 |
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| Mexico City | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
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| Jakarta | 14 | 16 | 16 | 14 | 11 | 10 | 10 | 11 | 13 | 15 | 14 | 13 |
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