UV Index in Gridley, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Gridley, United States, as it provides essential information about the sun’s ultraviolet radiation levels. Being aware of these levels is key for effective sunburn prevention and maintaining long-term skin health. With Gridley’s Mediterranean climate, characterized by warm, sunny summers, the risk of high UV exposure can lead to serious skin damage if proper precautions are not taken. From midday peaks of 10 on the UV Index scale to moderate readings in the morning and late afternoon, staying informed about UV levels can help you enjoy the outdoors safely.

Hourly UV Index in Gridley

Today's UV Index presents an intriguing curve, starting the day with a mellow maximum of 1 at 07:00. As the sun climbs higher, things heat up quickly—by 10:00, the index reaches 6, and by 12:00, it peaks at an intense 10. This level remains steady until 14:00, urging sun enthusiasts to take precautions. As the afternoon fades, the UV Index gracefully tapers off, dropping to 4 by 17:00, and finally sinking back to a gentle 1 by 19:00. With mid-day UV levels soaring, it’s crucial 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	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	10	very high	15 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 Gridley

Throughout the year, UV exposure varies significantly, with the highest intensity typically occurring during spring and summer months. March marks a transition with a UV Index rising to 7 (high exposure), while April and May surge to 8 and 10, respectively, indicating very high exposure. The peak is reached in June at 11, classified as extreme, requiring the shortest burn time of just 10 minutes. July and August continue with 10 (very high), before tapering off in September to 9. October sees a decrease to 6 (high), followed by a return to moderate levels in November and December. Visitors and residents are advised to exercise extra caution during the high-risk months of April through September, especially during midday hours. It's crucial to apply sunscreen, wear protective clothing, and seek shade to minimize the risk of skin damage during these periods.

Monthly Maximum UV Index for Gridley, United States

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

The table above highlights how UV exposure in Gridley 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.

Gridley'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
Gridley	3	4	7	8	10	11	10	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