UV Index in Saint Johns, United States
Last updated: February 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 | 1 | 2 | 4 | 6 | 7 | 7 | 6 | 4 | 2 | 1 | 0 | 0 |
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| Exposure | low | moderate | high | moderate | low |
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| Time to burn | 45 min | 30 min | 25 min | 30 min | 45 min |
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UV Index throughout the year in Saint Johns
UV Index (UVI) in Saint Johns. 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 | 2 | 1 | 1 | 0 | 0 |
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| February | 1 | 1 | 2 | 4 | 6 | 7 | 7 | 6 | 4 | 2 | 1 | 0 | 0 |
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| March | 1 | 2 | 4 | 6 | 9 | 10 | 9 | 8 | 5 | 3 | 1 | 1 | 0 |
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| April | 1 | 3 | 5 | 8 | 10 | 12 | 11 | 9 | 6 | 3 | 2 | 1 | 0 |
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| May | 2 | 4 | 6 | 9 | 12 | 12 | 12 | 10 | 7 | 4 | 2 | 1 | 1 |
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| June | 2 | 4 | 6 | 9 | 12 | 13 | 13 | 11 | 8 | 5 | 2 | 1 | 1 |
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| July | 2 | 3 | 6 | 9 | 12 | 13 | 12 | 10 | 8 | 5 | 2 | 1 | 1 |
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| August | 1 | 3 | 5 | 8 | 11 | 12 | 12 | 10 | 7 | 4 | 2 | 1 | 1 |
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| September | 1 | 2 | 5 | 8 | 10 | 11 | 10 | 8 | 6 | 3 | 1 | 1 | 0 |
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| October | 1 | 2 | 4 | 6 | 8 | 8 | 8 | 6 | 4 | 2 | 1 | 0 | 0 |
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| November | 1 | 1 | 3 | 4 | 6 | 6 | 5 | 4 | 2 | 1 | 1 | 0 | 0 |
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| December | 0 | 1 | 2 | 3 | 5 | 5 | 5 | 3 | 2 | 1 | 1 | 0 | 0 |
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Compare Saint Johns UV Index to other United States cities
Saint Johns'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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| Saint Johns | 5 | 7 | 10 | 12 | 12 | 13 | 13 | 12 | 11 | 8 | 6 | 5 |
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Compare Saint Johns's UV Index to other cities in the world
Saint Johns'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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| Saint Johns | 5 | 7 | 10 | 12 | 12 | 13 | 13 | 12 | 11 | 8 | 6 | 5 |
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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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