UV Index in Pierce, United States

Last updated: May 3, 2025

In Pierce, United States, staying informed about the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps you take necessary precautions against harmful sun exposure, reducing the risk of painful sunburns and long-term skin damage. With a Dfa climate that features warm summers, the UV index can peak at a striking 9 between 1:00 PM and 2:00 PM, making midday the most critical time for sun safety. Being aware of these UV levels empowers you to enjoy the outdoors while safeguarding your skin.

Hourly UV Index in Pierce

As the sun rises, the UV Index begins at a low 1 at 07:00, providing a gentle start to the day. By 09:00, it picks up to 3, signaling the need for a bit more awareness. The real warmth comes at 10:00, with the index reaching 5, and it escalates quickly as noon approaches. By 12:00, we hit 8, and at 13:00, the UV index peaks at 9, marking the height of solar intensity. As the afternoon progresses, values remain high but start to dip slightly: 8 at 15:00 and then down to 6 by 16:00. As the sun begins to set, the index falls to 4 at 17:00 and finally drops back to 1 by evening, reminding us to bask in the sun wisely and protect our skin during 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	1	low	45 min
09:00	3	moderate	30 min
10:00	5	moderate	30 min
11:00	7	high	25 min
12:00	8	very high	15 min
13:00	9	very high	15 min
14:00	9	very high	15 min
15:00	8	very high	15 min
16:00	6	high	25 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Pierce

Throughout the year, UV Index levels fluctuate significantly, reflecting seasonal changes in sun exposure. The high-risk months for UV exposure are April through September, with the highest point occurring in June, where the UV Index reaches an extreme level of 11 and the burn time shortens to just 10 minutes. To protect against harmful effects, visitors and residents should take precautions during these months, particularly in high-index periods; seek shade, wear protective clothing, and apply sunscreen with a high SPF during peak hours. In contrast, the UV Index drops to a moderate level in January, February, and November, allowing for a safer outdoor experience, while December and January present lower risks with burn times of 45 minutes. Remaining aware of UV levels can help ensure safe outdoor activities year-round.

Monthly Maximum UV Index for Pierce, United States

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

The table above highlights how UV exposure in Pierce 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.

Pierce'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
Pierce	3	5	6	8	9	11	10	10	8	6	3	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