UV Index in Weed, United States

Last updated: July 2, 2025

Understanding the UV Index in Weed, United States, is crucial for protecting your skin and overall health. With high UV levels peaking around midday, awareness of these fluctuations can help you prevent painful sunburns and long-term skin damage. In Weed’s cool-summer Mediterranean climate, the combination of altitude and summer sun can lead to intense UV exposure, particularly from 11 AM to 1 PM, when the index reaches a maximum of 11. Stay informed and shield yourself from harmful rays to enjoy the great outdoors safely!

Hourly UV Index in Weed

The UV Index throughout the day follows a predictable rise and fall, peaking at 11 around 1:00 PM. Starting at a modest 1 at 7:00 AM, it gradually escalates, reaching 10 by 12:00 PM, signaling the need for sun protection. As the afternoon progresses, the index dips from 11 to 8 by 3:00 PM, then declines further to 2 by 6:00 PM, and finally settles back at 1 by 7:00 PM. This data underscores the importance of taking precautions during the hours of peak UV exposure, particularly between 11:00 AM and 3:00 PM, when levels are highest and pose the greatest risk to skin health.

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	4	moderate	30 min
10:00	6	high	25 min
11:00	8	very high	15 min
12:00	10	very high	15 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	8	very high	15 min
16:00	6	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 Weed

Throughout the year, UV exposure fluctuates significantly, with high-risk months typically occurring from March to August. In March, the UV Index rises to a high level of 7, indicating a reduced burn time of 25 minutes. This escalates in April and May, where the Index reaches 9 and 11, respectively, marking a very high to extreme threat with burn times decreasing to as little as 10 minutes by May. June and July maintain this extreme rating, prompting strict sun safety precautions. While August experiences a slight drop to a very high rating of 10, the risk remains. As September approaches, UV levels decrease to 9, then gradually continue to decline through the fall and winter months, returning to a moderate level of 3 in December. Visitors and residents are strongly advised to take protective measures, particularly during the peak months, including wearing sunscreen, protective clothing, and minimizing sun exposure during peak hours to reduce the risk of UV-related harm.

Monthly Maximum UV Index for Weed, United States

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

The table above highlights how UV exposure in Weed compares to other major locations across United States. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Weed's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Chicago UVI	3	4	6	8	9	10	10	9	8	6	4	2
Brooklyn UVI	3	5	6	8	10	10	9	9	8	6	4	2
New York City UVI	3	5	6	8	10	10	9	9	8	6	4	2
Weed	3	4	7	9	11	11	11	10	9	6	4	3
Los Angeles UVI	4	6	8	9	10	11	11	10	10	7	5	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5