UV Index in Port Gibson, United States

Last updated: June 2, 2025

Awareness of the UV Index is crucial in Port Gibson, where the warm, humid climate can lead to increased sun exposure and skin health risks. Understanding UV levels helps residents safeguard against sunburn and long-term skin damage, particularly when the index can peak at a striking 11 during midday. With a climate zone classified as Cfa, Port Gibson experiences significant UV exposure, making it essential for locals to stay informed about daily UV fluctuations to enjoy the sunshine safely.

Hourly UV Index in Port Gibson

Expect a sunny day with a fluctuating UV Index that peaks at 11 around midday. The morning starts off gentle, with values rising from 1 at 7:00 AM to 4 by 9:00 AM. As the sun climbs higher, the UV Index escalates sharply, reaching 9 by 11:00 AM and hitting its highest point of 11 at both 12:00 PM and 1:00 PM. After the sun’s zenith, the UV levels gradually decline, dropping to 10 at 2:00 PM and tapering off to 1 by 7:00 PM. Remember to protect your skin during those peak hours for a safe and enjoyable day outdoors!

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	9	very high	15 min
12:00	11	extreme	10 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	3	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Port Gibson

Throughout the year, UV radiation levels vary significantly, with the highest risk months being March through August. During this period, the UV Index reaches extreme levels, peaking at 12 in June and July, where the recommended burn time is as little as 10 minutes. Visitors and residents should exercise caution and take protective measures, such as wearing sunscreen, hats, and UV-protective clothing, especially in late spring and summer. Conversely, the winter months of January and December present a lower risk with a moderate UV Index of 4 and a longer burn time of 30 minutes. However, it's imperative to remain vigilant year-round, as even moderate levels can contribute to skin damage over time.

Monthly Maximum UV Index for Port Gibson, United States

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

The table above highlights how UV exposure in Port Gibson 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.

Port Gibson'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
Los Angeles UVI	4	6	8	9	10	11	11	10	10	7	5	4
Port Gibson	4	7	9	11	11	12	12	11	10	8	6	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5