UV Index in Altar, Mexico

Last updated: July 2, 2025

In Altar, Mexico, being aware of the UV Index is crucial for protecting your skin and overall health. Understanding the daily UV levels is essential for sunburn prevention, as prolonged exposure to high UV radiation can lead to serious skin issues. With a semi-arid climate that often sees high UV readings—peaking at an intense 12 around noon—residents and visitors alike need to stay vigilant. By checking the UV Index regularly, you can enjoy the sunshine while keeping your skin safe from harmful rays.

Hourly UV Index in Altar

As the sun rises, the UV Index starts off mild at 1 at 07:00, making it safe to enjoy the morning outdoors. By 08:00, it increases to 3, signaling the need for light protection. However, the real intensity kicks in as the clock strikes 10:00, with the index peaking at a robust 12 by 12:00 and 13:00. During these hours, the sun’s rays are at their strongest, reaching a maximum of 11 at 11:00. As afternoon transitions into evening, the index begins to decline, dropping to 10 at 14:00 and gradually falling to 1 by 19:00. To make the most of your day, plan your outdoor activities in the early morning or late afternoon for a safer experience under the sun!

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	3	moderate	30 min
09:00	5	moderate	30 min
10:00	8	very high	15 min
11:00	11	extreme	10 min
12:00	12	extreme	10 min
13:00	12	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 min
16:00	5	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Altar

Throughout the year, the UV Index shows significant fluctuations, reflecting changing seasonal conditions. From January (UV Index 5) to November (UV Index 6), the levels start moderate and peak in the summer months. The highest risk months are typically from March to September, where the UV Index reaches extremes between 10 and 12, with minimal burn times of just 10 minutes. By April and May, caution is crucial as these months have an extreme exposure category. As the year winds down, October marks a notable decrease in UV rays, but still warrants attention due to a very high index of 8. For residents and visitors, it's essential to protect your skin during peak UV months by using sunscreen, wearing protective clothing, and limiting sun exposure during peak hours. Always stay vigilant, especially from late winter through early autumn, to enjoy outdoor activities safely.

Monthly Maximum UV Index for Altar, Mexico

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

The table above highlights how UV exposure in Altar 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.

Altar'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
Altar	5	7	10	11	12	12	12	12	11	8	6	5
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
Puebla UVI	10	12	14	15	15	15	15	14	14	13	10	9