UV Index in Hays, United States

Last updated: July 2, 2025

Awareness of the UV Index is crucial for residents of Hays, United States, especially in a region characterized by a Cfa climate, where sunny days can lead to significant UV exposure. Understanding UV levels helps in preventing sunburns and protecting skin health, which are essential for long-term well-being. With peak UV readings reaching a maximum of 11 around midday, the risks of skin damage and related health issues increase substantially during the warmer months. By staying informed about the UV Index, you can enjoy the sun safely while minimizing potential harm to your skin and overall health.

Hourly UV Index in Hays

During the day, the UV Index exhibits a striking pattern as it peaks in the late morning and early afternoon. Starting from a modest value of 1 at 07:00, the index gradually climbs, reaching 3 by 09:00. Expect a sharp increase around 10:00, when it soars to 5, and it doesn't stop there; by noon, it hits an impressive 10. The highest point of the day occurs at 13:00, with a peak of 11, indicating a critical time for sun exposure. As the afternoon progresses, the index begins to decline, falling to 10 at 14:00 and tapering off to 9 at 15:00. By evening, the UV Index diminishes steadily, finishing the day back at 1 by 19:00. This data emphasizes the importance of protective measures during the high noon hours when UV levels are at their most intense.

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.
TimeUVICategoryTime to Burn
07:001low45 min
08:001low45 min
09:003moderate30 min
10:005moderate30 min
11:007high25 min
12:0010very high15 min
13:0011extreme10 min
14:0010very high15 min
15:009very high15 min
16:007high25 min
17:004moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Hays

The UV Index experiences a significant increase from winter to summer, peaking during the high-risk months of May, June, and July, where it reaches an extreme level of 11 and a burn time of just 10 minutes. As we transition into spring, March and April also show very high levels (UV Index 8 and 10, respectively), resulting in a burn time of 15 minutes. Visitors and residents should be particularly cautious during these months, seeking shade, wearing protective clothing, and applying sunscreen frequently, as exposure can lead to skin damage in a matter of minutes. From August to October, the index gradually decreases; however, September and October still present high risks (UV Index 10 and 8) with a burn time of 15 minutes. As winter arrives, UV levels dip to moderate, and the burn times increase to 30 minutes in November and December, suggesting a lower risk of UV exposure. Always prioritize sun safety, especially in the warmer months.

Monthly Maximum UV Index for Hays, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Hays. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010853
Data source: Statistical UV Index data for Hays, 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 Hays UV Index with Other United States Cities

The table above highlights how UV exposure in Hays 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.
Hays's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Chicago UVI34689101098642
Brooklyn UVI35681010998642
New York City UVI35681010998642
Los Angeles UVI46891011111010754
Hays468101111111010853
Houston UVI589111112121110975