UV Index in San Ildefonso, Mexico

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors of San Ildefonso, Mexico. With its Cwb climate, characterized by mild summers and a significant amount of sunlight, awareness of UV levels can make a significant difference in protecting yourself from harmful sun exposure. As the UV Index can reach a high of 14 during peak hours, knowing when to seek shade is vital for preventing sunburn and promoting long-term skin health. By keeping an eye on UV levels, you can enjoy the beautiful outdoors while safeguarding your skin against the risks of overexposure.

Hourly UV Index in San Ildefonso

As the day unfolds, the UV Index reveals an intriguing pattern of intensity. At 7 AM and 8 AM, it remains low at 1, perfect for a leisurely morning stroll. But by 9 AM, it begins to rise sharply, reaching a 3. The sun takes center stage around 10 AM, as the index jumps to 6, ramping up to a peak of 14 by 1 PM and 2 PM, marking the height of midday sun exposure. As the clock ticks towards late afternoon, the UV Index starts to decline: 12 at 3 PM, followed by 9 at 4 PM, gradually fading to 3 by 6 PM, and then settling back to 1 as the sun sets at 7 PM. It's a vital reminder to stay protected during those peak 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	1	low	45 min
08:00	1	low	45 min
09:00	3	moderate	30 min
10:00	6	high	25 min
11:00	9	very high	15 min
12:00	13	extreme	10 min
13:00	14	extreme	10 min
14:00	14	extreme	10 min
15:00	12	extreme	10 min
16:00	9	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 San Ildefonso

The UV Index in the region exhibits significant seasonal fluctuations, peaking from February to October, with extremely high levels reached in March, April, May, June, July, August, and September, where the UV Index consistently registers at 14 to 15. These months carry a burn time of just 10 minutes, indicating a critical risk for sunburn and skin damage. Conversely, during January, November, and December, the UV Index falls to levels classified as very high (9 to 10), allowing for slightly longer exposure times of 15 minutes. Visitors and residents should exercise caution during the high-risk months (February through October), ensuring the use of sunscreen, protective clothing, and seeking shade during peak hours to safeguard against UV radiation.

Monthly Maximum UV Index for San Ildefonso, Mexico

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

The table above highlights how UV exposure in San Ildefonso 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 Ildefonso'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 Ildefonso	9	12	14	15	15	14	14	14	14	12	10	8
Puebla UVI	10	12	14	15	15	15	15	14	14	13	10	9