UV Index in Prescott, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Prescott, United States, where the sun shines brightly throughout the year. As the UV Index can reach a peak of 11 during midday, awareness of these levels is essential for protecting your skin from sunburn and long-term damage. With Prescott's Cfa climate, known for warm summers and mild winters, the risk of UV exposure is heightened, especially during the longer daylight hours. By keeping an eye on the UV Index, you can take proactive steps to safeguard your skin health, enjoy outdoor activities safely, and embrace the beautiful Arizona sunshine responsibly.

Hourly UV Index in Prescott

The UV Index for the day showcases a dramatic rise in intensity as the sun climbs higher in the sky. Starting from a mild 1 at 07:00, it escalates steadily to a peak of 11 between 13:00 and 14:00, making it crucial to prioritize sun safety during these hours. As noon approaches, protective measures become essential with the index hitting a striking 10 at 12:00. Following that, a gradual decline occurs, retreating to 6 at 16:00, then tapering to 2 by 18:00 and settling back to 1 by 19:00. This pattern emphasizes the importance of seeking shade and wearing sunscreen during the midday hours when UV exposure is at its highest.

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	10	very high	15 min
13:00	11	extreme	10 min
14:00	11	extreme	10 min
15:00	9	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 Prescott

Throughout the year, the UV Index demonstrates significant seasonal variation, with high-risk months primarily occurring from March to August when values reach their peak. Notably, May through July feature extreme UV Index levels (11-12), with a burn time as short as 10 minutes. This indicates that during these months, individuals should take extra precautions, such as wearing sunscreen, protective clothing, and seeking shade during peak sun hours. Conversely, in January and December, with a moderate UV Index of 4, burn times extend to 30 minutes, suggesting lower risk for sunburn. Visitors and residents are encouraged to remain vigilant and adjust their sun exposure habits in accordance with these fluctuations throughout the year to protect their skin health.

Monthly Maximum UV Index for Prescott, United States

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

The table above highlights how UV exposure in Prescott 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.

Prescott'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
Prescott	4	6	8	10	11	12	11	11	10	8	6	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5