UV Index in Zacatecas, Mexico

Last updated: August 1, 2025

Understanding the UV Index is essential for everyone living in or visiting Zacatecas, Mexico. With its high-altitude climate and abundant sunshine, awareness of UV levels plays a critical role in preventing sunburn and promoting overall skin health. The UV Index in Zacatecas can skyrocket to a peak of 14 during midday, emphasizing the need for protective measures. Given the region's BSk climate, where dry conditions and clear skies prevail, the risk of skin damage from UV radiation is significant. By staying informed about daily UV levels, you can better safeguard yourself against harmful effects and enjoy the beautiful, sunny days in Zacatecas.

Hourly UV Index in Zacatecas

The UV Index for today showcases a dynamic rise and fall in sunlight intensity throughout the hours. Starting from a low of 0 at 07:00, the index gradually increases to 1 at 08:00, and by 09:00, it reaches 2—a hint of what’s to come. As the sun climbs higher in the sky, the UV Index takes a notable leap, peaking at an intense 14 during both 13:00 and 14:00, signaling the need for sun protection. The intensity begins to wane after 15:00, descending to 10 by 16:00, and further slipping to 3 at 18:00. As evening approaches, the index tapers off to 1 by 19:00, wrapping up a day filled with varying UV exposure. Don’t forget to take care of your skin during those midday 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	0	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	4	moderate	30 min
11:00	8	very high	15 min
12:00	11	extreme	10 min
13:00	13	extreme	10 min
14:00	14	extreme	10 min
15:00	13	extreme	10 min
16:00	10	very high	15 min
17:00	6	high	25 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in Zacatecas

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 Zacatecas, Mexico

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

The table above highlights how UV exposure in Zacatecas 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.

Zacatecas's solar exposure compared to other cities in Mexico. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Guadalajara UVI	9	11	14	14	14	13	13	13	13	12	9	8
Zacatecas	9	11	14	15	15	14	14	14	14	12	10	8
Iztapalapa UVI	10	12	14	15	14	14	14	14	14	12	10	8
Ecatepec de Morelos UVI	10	12	14	15	15	14	14	13	14	12	10	8
Mexico City UVI	10	12	14	15	15	14	14	13	14	12	10	8
Puebla UVI	10	12	14	15	15	15	15	14	14	13	10	9