UV Index in Fresnillo, Mexico

Last updated: August 1, 2025

In Fresnillo, Mexico, staying aware of the UV Index is crucial for safeguarding your skin and overall health. With summer temperatures typically soaring and a climate categorized as BSk, residents and visitors alike are at risk of intense UV exposure, particularly during midday hours when the index peaks at a high of 14. Understanding UV levels is key to preventing sunburn and reducing the long-term risks of skin damage and skin cancer. As the sun climbs in the sky, so do the UV rays, making it essential to monitor the UV Index regularly and take protective measures when the levels rise.

Hourly UV Index in Fresnillo

The UV Index showcases a dramatic rise throughout the morning, starting from a negligible 0 at 07:00 and escalating swiftly to a peak of 14 by 13:00. This midday sun intensity marks the highest levels, indicating a significant risk of harm from unprotected sun exposure. As the afternoon progresses, it gently tapers down, descending to 10 by 16:00 and further decreasing to 3 by 18:00. With such variability, it’s crucial to stay vigilant about sun safety, particularly between 11:00 and 14:00, when the UV Index reaches its zenith at 12 and 14, prompting a strong recommendation for protective measures like sunscreen and appropriate clothing.

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	0	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	4	moderate	30 min
11:00	7	high	25 min
12:00	11	extreme	10 min
13:00	13	extreme	10 min
14:00	14	extreme	10 min
15:00	13	extreme	10 min
16:00	10	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 Fresnillo

The UV Index exhibits significant seasonal variations, with the highest values typically recorded between February and October. During these months, particularly March through October, the UV Index reaches extreme levels, peaking at 15 in both April and May, providing only a brief burn time of 10 minutes. January and December are classified as very high with values of 8, allowing a slightly longer burn time of 15 minutes. As high-risk months, February to October demand increased awareness and protection methods to prevent sunburn and longer-term health issues. Visitors and residents are strongly advised to apply broad-spectrum sunscreen, wear protective clothing, and seek shade during peak hours to mitigate the risks associated with intense UV exposure.

Monthly Maximum UV Index for Fresnillo, Mexico

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

The table above highlights how UV exposure in Fresnillo 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.

Fresnillo'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
Fresnillo	8	11	13	15	15	14	14	14	14	12	10	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