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