UV Index in San Francisco, Mexico
Last updated: April 2, 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 | 4 | 7 | 10 | 13 | 13 | 12 | 9 | 5 | 2 | 1 | 1 |
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| Exposure | low | moderate | high | very high | extreme | very high | moderate | low |
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| Time to burn | 45 min | 30 min | 25 min | 15 min | 10 min | 15 min | 30 min | 45 min |
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UV Index throughout the year in San Francisco
UV Index (UVI) in San Francisco. 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 | 2 | 3 | 5 | 7 | 8 | 7 | 5 | 3 | 1 | 1 | 0 |
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| February | 0 | 1 | 2 | 5 | 7 | 10 | 10 | 9 | 7 | 4 | 2 | 1 | 0 |
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| March | 1 | 1 | 3 | 6 | 10 | 12 | 13 | 11 | 8 | 5 | 2 | 1 | 0 |
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| April | 1 | 2 | 4 | 7 | 10 | 13 | 13 | 12 | 9 | 5 | 2 | 1 | 1 |
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| May | 1 | 2 | 4 | 7 | 11 | 13 | 13 | 12 | 9 | 5 | 3 | 1 | 1 |
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| June | 1 | 2 | 4 | 8 | 11 | 13 | 13 | 12 | 9 | 6 | 3 | 1 | 1 |
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| July | 1 | 2 | 4 | 7 | 10 | 12 | 12 | 11 | 9 | 6 | 3 | 1 | 1 |
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| August | 1 | 2 | 4 | 7 | 10 | 12 | 12 | 11 | 8 | 5 | 3 | 1 | 1 |
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| September | 1 | 1 | 4 | 7 | 10 | 12 | 12 | 11 | 8 | 5 | 2 | 1 | 0 |
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| October | 1 | 1 | 3 | 6 | 9 | 11 | 11 | 9 | 6 | 3 | 1 | 1 | 0 |
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| November | 1 | 1 | 3 | 5 | 7 | 8 | 8 | 7 | 5 | 2 | 1 | 1 | 0 |
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| December | 0 | 1 | 2 | 4 | 5 | 7 | 7 | 6 | 4 | 2 | 1 | 1 | 0 |
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Compare San Francisco UV Index to other Mexico cities
San Francisco's solar exposure compared to other cities in Mexico. Generated using Copernicus Atmosphere Monitoring Service information.| | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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| San Francisco | 8 | 10 | 12 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 8 | 7 |
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| Guadalajara | 9 | 11 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 9 | 8 |
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| Iztapalapa | 10 | 12 | 14 | 15 | 14 | 14 | 14 | 14 | 14 | 12 | 10 | 8 |
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| Ecatepec de Morelos | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
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| Mexico City | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
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| Puebla | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |
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Compare San Francisco's UV Index to other cities in the world
San Francisco'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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| Miami | 6 | 9 | 10 | 12 | 12 | 13 | 12 | 12 | 11 | 10 | 8 | 6 |
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| San Francisco | 8 | 10 | 12 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 8 | 7 |
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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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