UV Index in Palmyra, United States

Last updated: July 2, 2025

In Palmyra, United States, being aware of the UV Index is essential for protecting your skin and maintaining overall health. Understanding UV levels is crucial not only for preventing painful sunburns but also for minimizing long-term risks like skin cancer. With a Cfa climate characterized by warm summers and exposure to intense sunlight, Palmyra can experience UV Index levels that peak at 10 during midday hours, making it especially important for residents and visitors to stay informed and take proactive measures against harmful UV rays.

Hourly UV Index in Palmyra

The UV Index starts off gentle in the early hours, peaking at 1 around 07:00 and 08:00. As the sun ascends, it gradually climbs to reach 2 by 09:00 and then surges to 4 by 10:00. A significant spike occurs around 11:00, peaking at 6, before reaching its zenith of 10 from 13:00 to 14:00—a crucial time for sun protection. As the afternoon wanes, the index begins to decline, tapering down to 7 at 16:00, then to 5 by 17:00. As the sun sets, it drops to 3 at 18:00, and finally sinks back to a safe 1 by 19:00, reminding us to be cautious in the midday sun while enjoying the warm daylight.

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	1	low	45 min
09:00	2	low	45 min
10:00	4	moderate	30 min
11:00	6	high	25 min
12:00	9	very high	15 min
13:00	10	very high	15 min
14:00	10	very high	15 min
15:00	9	very high	15 min
16:00	7	high	25 min
17:00	5	moderate	30 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in Palmyra

The UV Index displays significant seasonal fluctuations, with higher levels typically peaking during the summer months. From March to September, UV levels reach high to extreme categories, particularly from April to June, where the Index hits a maximum of 11 in June. This indicates heightened risks for sunburn, with burn times decreasing to as little as 10 minutes during the most intense months. April to August marks the high-risk period, where residents and visitors are strongly advised to adopt protective measures such as wearing sunscreen, hats, and UV-blocking sunglasses, and seeking shade during peak sun hours. In contrast, the fall and winter months of October to February witness lower UV exposure, making sun protection less urgent but still necessary during midday hours, as UV Index levels remain moderate to high.

Monthly Maximum UV Index for Palmyra, United States

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

The table above highlights how UV exposure in Palmyra 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.

Palmyra'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
Palmyra	3	5	7	10	10	11	10	10	8	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