UV Index in California, Mexico

Last updated: May 3, 2025

In California, Mexico, understanding the UV Index is crucial for protecting your skin and overall health. With intense sun exposure, particularly during midday hours when levels peak at 15, being aware of UV levels can help prevent painful sunburns and long-term skin damage. California's arid BSk climate brings along heightened UV risks, making it essential to stay informed about daily fluctuations. By keeping an eye on the UV Index, residents and visitors can enjoy outdoor activities while safeguarding their skin from harmful rays.

Hourly UV Index in California

The UV Index today follows a dramatic curve, with a slow start in the early hours. At 8:00 AM, the index registers a low 1, gradually climbing to 2 by 9:00 AM. However, the sun’s intensity peaks around noon, hitting a scorching 12 before soaring even higher to 15 between 1:00 PM and 2:00 PM. As the afternoon progresses, the levels start to decrease, tapering down to 10 by 4:00 PM, and finally down to 1 by 7:00 PM. It's essential to stay protected during the midday hours when the UV index is at its highest—don't forget your sunscreen!

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
07:000low45 min
08:001low45 min
09:002low45 min
10:005moderate30 min
11:009very high15 min
12:0012extreme10 min
13:0015extreme10 min
14:0015extreme10 min
15:0013extreme10 min
16:0010very high15 min
17:006high25 min
18:003moderate30 min
19:001low45 min

Monthly UV Index Trends in California

The UV Index demonstrates significant seasonal changes, peaking during the late spring and summer months. From January to March, the index starts high but quickly escalates, reaching its maximum of 15 in both April and May. The months of February to October pose the highest risk, with an extreme exposure category, where the burn time is notably short at 10 minutes. Visitors and residents should be particularly vigilant during these high-risk months, especially from February to October, and adopt protective measures such as wearing sunscreen, hats, and protective clothing. As we approach the fall and winter months, the UV risk decreases but remains notably high in November and December. It is essential to stay informed and protect your skin year-round.

Monthly Maximum UV Index for California, Mexico

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in California. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec911141515141414141298
Data source: Statistical UV Index data for California, 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 California UV Index with Other Mexico Cities

The table above highlights how UV exposure in California compares to other major locations across Mexico. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
California's solar exposure compared to other cities in Mexico. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Guadalajara UVI911141414131313131298
California9111415151414141412108
Iztapalapa UVI10121415141414141412108
Ecatepec de Morelos UVI10121415151414131412108
Mexico City UVI10121415151414131412108
Puebla UVI10121415151515141413109