UV Index in Peterborough, United States

Last updated: July 2, 2025

In Peterborough, United States, being aware of the UV Index is crucial for protecting your skin from harmful ultraviolet radiation. Understanding UV levels helps in preventing sunburns and maintaining overall skin health, especially during periods of higher exposure. With a Dfb climate, residents often experience fluctuating UV levels throughout the day, peaking around midday with values reaching 9, indicating a high risk for skin damage. By staying informed about the UV Index, you can confidently enjoy the outdoors while safeguarding your skin against the sun's harmful effects.

Hourly UV Index in Peterborough

The UV Index today presents a notable climb as the sun ascends, peaking at 9 around noon and early afternoon, signaling very high sun exposure risk. Starting gently at 1 by 7 AM, the index rises steadily, reaching 6 by 10 AM and then surging to its maximum of 9 between 12 PM and 1 PM. Early afternoon brings a slight decline to 8 at 2 PM, followed by a gradual decrease through the later hours, settling back to 1 by 7 PM. With this trajectory, it's crucial to take precautions during the peak hours of 11 AM to 1 PM, ensuring skin protection against harmful UV rays. Stay safe and enjoy the sun wisely!

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	8	very high	15 min
12:00	9	very high	15 min
13:00	9	very high	15 min
14:00	8	very high	15 min
15:00	7	high	25 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 Peterborough

UV exposure varies significantly throughout the year, with high-risk months primarily from April to September when the UV Index reaches moderate to very high levels. During this period, especially in May, June, and July, with a peak UV Index of 10, residents and visitors should take precautions, limiting sun exposure to 15 minutes to prevent skin damage. It's crucial to apply sunscreen, wear protective clothing, and seek shade during these high-risk months. In contrast, fall and winter months, particularly November and December, see a decline in UV levels, making it safer to be outdoors with longer burn times. However, always remain vigilant since UV rays can still cause harm even in colder months.

Monthly Maximum UV Index for Peterborough, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Peterborough. 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 Peterborough, 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 Peterborough UV Index with Other United States Cities

The table above highlights how UV exposure in Peterborough 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.

Peterborough'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
Peterborough	3	5	6	8	9	10	9	9	7	6	3	2
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
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5