UV Index in Mexico City, Mexico

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors of Mexico City, where the high altitude and sunny climate significantly elevate UV radiation risks. Awareness of UV levels is not just about preventing painful sunburns; it plays a vital role in safeguarding your skin health over time. During peak hours, particularly from 11:00 AM to 2:00 PM, the UV Index can soar to extreme levels, reaching up to 14—a reminder that the sun's rays can be particularly fierce in this charming Cwb climate zone. Being informed about the UV Index empowers you to enjoy the sunny days in Mexico City while taking the necessary precautions to protect yourself from harmful exposure.

Hourly UV Index in Mexico City

The UV Index data reveals a dynamic shift in solar intensity throughout the day. Starting off low at 1 in the early morning at 07:00, it gradually climbs, reaching maximum levels by midday. The peak occurs at 14:00, with a robust reading of 14, signaling the need for sun protection. As the afternoon progresses, values start to decline, dropping to 5 by the late afternoon and 3 by early evening. This pattern underscores the importance of being cautious during peak hours, particularly between 12:00 and 14:00, when UV exposure is at its highest.

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	2	low	45 min
10:00	5	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	12	extreme	10 min
16:00	9	very high	15 min
17:00	5	moderate	30 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in Mexico City

The UV Index experiences significant seasonal changes, with the highest readings occurring from February to September, where the index reaches extreme levels of 12 to 15. March through October are identified as particularly high-risk months, with the burn time consistently dropping to just 10 minutes, emphasizing the need for protective measures. As summer approaches, residents and visitors are strongly advised to take precautions such as wearing sunscreen, protective clothing, and seeking shade during peak hours to minimize skin damage. Come November and December, the UV Index decreases to 10 and 8 respectively, but caution is still recommended as the exposure remains categorized as very high. Always prioritize sun safety to ensure a healthy experience outdoors.

Monthly Maximum UV Index for Mexico City, Mexico

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

The table above highlights how UV exposure in Mexico City 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.

Mexico City'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
Mexico City	10	12	14	15	15	14	14	13	14	12	10	8
Ecatepec de Morelos 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