UV Index in Reading, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Reading, United States, where the climate offers mild summers and sometimes intense sun exposure. With peak UV levels often reaching a remarkable 10 during midday hours, awareness of these values is essential for preventing sunburn and promoting skin health. Knowing when UV levels are high allows residents to take proactive measures, whether that means applying sunscreen or seeking shade. As you enjoy the sunny days typical of our Cfa climate, staying informed about the UV Index can help you protect yourself and your loved ones from harmful UV radiation.

Hourly UV Index in Reading

The UV Index throughout the day showcases a significant peak during midday. Starting at a modest level of 1 at 07:00, it gradually climbs to 2 by 08:00, and rises to 3 by 09:00. The real intensity kicks in around 10:00, hitting 5, before reaching its zenith at 13:00 with a high of 10—a crucial reminder to seek shade and apply sunscreen. As the afternoon progresses, the index gently decreases, dropping to 9 at 14:00 and further to 5 by 16:00. By evening, it cools down to 3 at 17:00, tapering off to 1 by 19:00. Plan your outdoor activities accordingly to stay protected when the sun is at its strongest!

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	3	moderate	30 min
10:00	5	moderate	30 min
11:00	8	very high	15 min
12:00	9	very high	15 min
13:00	10	very high	15 min
14:00	9	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 Reading

Throughout the year, UV exposure varies significantly, peaking during late spring and summer months. High-risk months for UV exposure are April through September, where the UV Index frequently reaches levels classified as very high; particularly notable are May, June, and July, when it consistently hits a maximum of 10. Visitors and residents are advised to take precautions during these months, with burn times dramatically reduced to as little as 15 minutes. In contrast, January, February, and November present moderate UV levels, and December has a low index, making sun safety measures less critical during these months. To protect against skin damage, it is essential to wear sunscreen, seek shade, and wear protective clothing, especially between peak months of April and September.

Monthly Maximum UV Index for Reading, United States

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

The table above highlights how UV exposure in Reading 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.

Reading'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
Reading	3	5	6	9	10	10	10	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