UV Index in Sullivan, United States

Last updated: May 3, 2025

Awareness of the UV Index is crucial for residents of Sullivan, United States, as it serves as a valuable tool for protecting skin health and preventing sunburn. Understanding UV levels helps you make informed decisions about sun exposure, especially during peak hours when risks are highest. With Sullivan's Cfa climate, characterized by warm summers, UV exposure can significantly increase. On sunny days, the UV Index can peak at 10 around midday, indicating a need for protective measures. Stay vigilant and safeguard your skin by checking the UV Index regularly!

Hourly UV Index in Sullivan

At dawn, the UV Index starts at a mild 1 by 07:00, gradually climbing to 2 by 08:00 as the sun rises. The warmth intensifies, reaching 4 at 09:00 and peaking at a significant 10 between noon and 14:00, signaling the need for sun protection. As the afternoon rolls in, the index begins to dip, settling at 8 by 15:00 before tapering off further to 5 at 16:00. By the evening, the UV levels gracefully descend back to 2 at 18:00 and return to a safe 1 by 19:00, marking a day's journey through varying sun exposure. Be mindful of the midday sun, and 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	5	moderate	30 min
17:00	3	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Sullivan

Throughout the year, UV radiation levels fluctuate significantly, with high-risk months occurring between April and August where the UV Index reaches very high to extreme levels. Specifically, April (UV Index 9) and May (UV Index 10) present increased risks, with a burn time of just 15 minutes in May. The peak intensity is seen in June and July, where the UV Index hits 11, categorizing it as extreme; here, just 10 minutes of unprotected exposure can result in burns. As summer transitions into fall, the UV Index gradually decreases, indicating a safer exposure period, but caution is still necessary in September (UV Index 9) and October (UV Index 7). For both residents and visitors, it is advisable to take appropriate sun safety measures during the high-risk months, such as wearing protective clothing, using sunscreen, and seeking shade during peak hours to prevent skin damage.

Monthly Maximum UV Index for Sullivan, United States

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

The table above highlights how UV exposure in Sullivan 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.

Sullivan'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
Sullivan	3	5	6	9	10	11	11	10	9	7	5	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