UV Index in San Luis Potosi, Mexico

Last updated: July 2, 2025

In San Luis Potosí, understanding the UV Index is crucial for safeguarding your skin from harmful ultraviolet rays. With high UV levels peaking around midday, awareness of these fluctuations can help you prevent sunburn and promote long-term skin health. The city, characterized by its warm climate, presents unique exposure risks, especially during the hotter months when UV readings can soar to 14 at peak hours. By staying informed about the local UV Index, you can enjoy the sun safely and protect your skin from its damaging effects.

Hourly UV Index in San Luis Potosi

Throughout the day, the UV Index exhibits a dramatic rise, peaking during midday. Starting at a gentle 1 at 7:00 AM, it gradually climbs to 3 by 9:00 AM, before surging to an intense 13 by noon. The sun reaches its zenith at 1:00 PM, with a blistering 14, warning outdoor enthusiasts to take extra precautions. As the afternoon progresses, the index begins to decline, dropping to 7 by 4:00 PM, and then tapering further to 2 by 6:00 PM. By 7:00 PM, the day winds down with a safe 1 on the index. Those enjoying the outdoors are reminded to stay protected during the peak hours to avoid harmful UV exposure.

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	7	high	25 min
11:00	10	very high	15 min
12:00	13	extreme	10 min
13:00	14	extreme	10 min
14:00	13	extreme	10 min
15:00	11	extreme	10 min
16:00	7	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 San Luis Potosi

The UV Index demonstrates significant seasonal variability, with peak levels occurring from February to October, where an extreme rating (UV Index 12-14) is prevalent for most months. January and November feature a very high exposure category, while December sees a slight decrease. March through October are particularly concerning, as these months also have the shortest burn time of only 10 minutes. Visitors and residents should exercise caution during these high-risk months by wearing sunscreen, protective clothing, and seeking shade, especially during peak sunlight hours to minimize the risk of UV-related skin damage. Remember, even on cloudy days, UV rays can still cause harm, so stay vigilant year-round.

Monthly Maximum UV Index for San Luis Potosi, Mexico

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

The table above highlights how UV exposure in San Luis Potosi 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.

San Luis Potosi'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
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
San Luis Potosi	10	12	14	14	14	14	14	14	14	13	10	9
Puebla UVI	10	12	14	15	15	15	15	14	14	13	10	9