UV Index in Hamilton, United States

Last updated: July 2, 2025

Understanding the UV Index in Hamilton, United States, is crucial for protecting your skin and overall health. With UV levels rising significantly from morning to midday, it's essential to stay informed to prevent sunburn and long-term skin damage. The Cfa climate of Hamilton brings warm summers and ample sunshine, which can increase your exposure to harmful ultraviolet rays. By monitoring the UV Index, residents can take proactive steps to safeguard their skin during peak hours, ensuring a safer, healthier outdoor experience.

Hourly UV Index in Hamilton

The UV Index throughout the day displays a compelling narrative of sun intensity. Starting off at a gentle 1 by 7:00 AM, the index gradually climbs as the day progresses, reaching a moderate 2 by 8:00 AM. The real heat kicks in around 10:00 AM, peaking at an intense 11 between 12:00 PM and 1:00 PM. This marks the optimal time for sun protection, as the UV rays are at their most powerful, presenting a higher risk of harm for unprotected skin. As the afternoon unfolds, the index dips back to 10 by 2:00 PM and continues to decline, settling at a softer 1 by 7:00 PM. It’s a day of vibrant sun energy, highlighting the importance of being sun-smart during those peak hours!

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.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	2	low	45 min
09:00	4	moderate	30 min
10:00	6	high	25 min
11:00	9	very high	15 min
12:00	11	extreme	10 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	8	very high	15 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Hamilton

Throughout the year, the UV Index experiences significant fluctuations, with the highest risk months occurring from March to August. These months showcase increasingly extreme levels of UV radiation, peaking at an index of 11 in May, June, and July, where the burn time is critically short at just 10 minutes. February also marks the beginning of heightened risk with a UV Index of 7, while April reaches a very high index of 10. As visitors and residents enjoy outdoor activities, it is crucial to remain vigilant during these months. To protect against harmful UV exposure, it is advised to wear sunscreen, seek shade, and don protective clothing, especially during peak sun hours. Be mindful that even in months with a moderate UV Index, such as January, November, and December, sun protection is still necessary to maintain skin health.

Monthly Maximum UV Index for Hamilton, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Hamilton. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for Hamilton, based on information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

Compare Hamilton UV Index with Other United States Cities

The table above highlights how UV exposure in Hamilton compares to other major locations across United States. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Hamilton'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
Chicago UVI	3	4	6	8	9	10	10	9	8	6	4	2
Brooklyn UVI	3	5	6	8	10	10	9	9	8	6	4	2
New York City UVI	3	5	6	8	10	10	9	9	8	6	4	2
Los Angeles UVI	4	6	8	9	10	11	11	10	10	7	5	4
Hamilton	4	7	8	10	11	11	11	10	9	7	5	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5