UV Index in Janos, Mexico

Last updated: July 2, 2025

Awareness of the UV Index is crucial for residents and visitors in Janos, Mexico, where the climate is classified as BSk, characterized by dry conditions and intense sunshine. Understanding UV levels is essential not only for preventing sunburn but also for safeguarding overall skin health. With peak UV Index values soaring to 13 around midday, it's vital to stay informed about daily UV exposure risks. Whether you're enjoying outdoor activities or simply commuting, knowing the UV Index helps you take necessary precautions to protect your skin from harmful rays and enjoy the sunny days safely.

Hourly UV Index in Janos

The UV Index for the day showcases a steep rise in sun intensity as the hours progress. Starting at a gentle 1 at 07:00, it quickly climbs to a moderate 3 by 09:00. However, from 10:00 onwards, the sun's rays become increasingly potent, peaking at a striking 13 at 13:00. This midday zenith is followed by a gradual decline, with readings dropping to 7 by 16:00 and returning to a calm 1 by 19:00. With a maximum of 11 at 12:00, it’s essential to stay protected from the sun during peak hours to enjoy the day 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	3	moderate	30 min
10:00	6	high	25 min
11:00	9	very high	15 min
12:00	11	extreme	10 min
13:00	13	extreme	10 min
14:00	12	extreme	10 min
15:00	10	very high	15 min
16:00	7	high	25 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Janos

Throughout the year, UV levels fluctuate significantly, with the highest risks occurring between February and September. During this period, the UV Index peaks in April, May, June, and July at a striking 13, categorized as extreme, which means a burn can occur in as little as 10 minutes. The high-risk months include March through September, where values remain consistently high to extreme, necessitating extra caution. Residents and visitors are advised to take preventative measures during these months, such as wearing protective clothing, applying sunscreen frequently, and seeking shade during peak sun hours to minimize the risk of UV-related harm. The UV Index tapers off in November and returns to moderate levels in December and January, allowing for safer outdoor activities. Always stay informed and protect your skin, particularly during the high-UV months!

Monthly Maximum UV Index for Janos, Mexico

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

The table above highlights how UV exposure in Janos 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.

Janos'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
Janos	5	8	10	12	13	13	13	12	11	9	7	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