UV Index in Mexico, United States

Last updated: June 2, 2025

Awareness of the UV Index is crucial for residents and visitors in Mexico and the United States, where sun exposure can significantly impact health. Understanding UV levels is essential for preventing sunburn and maintaining long-term skin health, especially in regions with intense sunlight. Mexico's climate presents unique challenges; higher UV readings during midday can lead to increased risks of skin damage. By staying informed about the UV Index, you can take proactive measures to protect yourself and enjoy the sun safely.

Hourly UV Index in Mexico

Experience a fluctuating UV Index throughout the day, peaking dramatically as the sun rises to its zenith. Starting from a gentle 1 at 7:00 AM, the index climbs steadily, reaching 2 by 8:00 AM. As the morning unfolds, brace for a rapid increase, hitting 4 at 9:00 AM and escalating to an impressive 6 by 10:00 AM. The sun is at its strongest around noon, where it reaches a notable 9 during the height of the day. By 1:00 PM, the index peaks at 10, signaling extreme sun exposure, before gradually tapering off to 9 at 2:00 PM. As the afternoon wanes, the index retreats to 7 at 3:00 PM, and further decreases to 4 by 5:00 PM, finally sinking back to a soft 1 by 7:00 PM. Stay protected during the peak hours to enjoy sunny days safely! ☀️

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	4	moderate	30 min
10:00	6	high	25 min
11:00	8	very high	15 min
12:00	9	very high	15 min
13:00	10	very high	15 min
14:00	9	very high	15 min
15:00	7	high	25 min
16:00	5	moderate	30 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Mexico

Throughout the year, UV levels fluctuate significantly, with notable increases during the spring and summer months. High-risk months for UV exposure occur from April to August, when the UV Index reaches its peak, particularly in June at 10, indicating a very high exposure category where burn time is only 15 minutes. In contrast, the winter months of January and December present lower risks, with a UV Index of 2 and burn times of 45 minutes. As UV levels change, residents and visitors are advised to take precautions during the warmer months, such as wearing protective clothing, applying sunscreen regularly, and seeking shade during peak sun hours. In the cooler months, while the risk is lower, it's still wise to remain vigilant, particularly during midday hours when UV rays can still pose a threat.

Monthly Maximum UV Index for Mexico, United States

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

The table above highlights how UV exposure in Mexico 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.

Mexico'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
Mexico	2	4	6	8	9	10	9	9	7	5	3	2
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
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5