UV Index in Palmyra, United States

Last updated: June 2, 2025

Understanding the UV Index in Palmyra, United States is essential for protecting your skin and overall health. Awareness of ultraviolet (UV) levels helps residents and visitors alike minimize the risk of sunburn and long-term skin damage, particularly during peak hours when UV readings soar. With a humid continental climate (Dfa), Palmyra experiences significant sun exposure, especially from 10 AM to 2 PM when the index reaches its highest point of 10. By staying informed about the UV Index, you can enjoy the sunny days in Palmyra while safeguarding your skin against harmful rays.

Hourly UV Index in Palmyra

Starting off the day, the UV Index at 7:00 AM was a safe 1, gradually climbing to 2 by 8:00 AM. As the sun rose higher, it peaked at a striking 10 between 1:00 PM and 2:00 PM, indicating a significant risk for harmful effects on unprotected skin. The intensity of UV radiation began to wane in the afternoon, dropping to 9 at 3:00 PM and steadily decreasing to 4 by 5:00 PM. As evening approached, the index fell further to 2 at 6:00 PM and capped the day at a low 1 by 7:00 PM. This hourly trend highlights the importance of sun protection during peak hours, particularly between 11:00 AM and 2:00 PM, when the UV Index is at its highest.

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	3	moderate	30 min
10:00	5	moderate	30 min
11:00	8	very high	15 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	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Palmyra

Throughout the year, the UV Index exhibits notable seasonal changes, with the highest levels occurring from April to September. During this peak period, particularly in May, June, and July, the UV Index reaches 10—categorized as very high, necessitating vigilant sun protection measures. Visitors and residents should be particularly cautious in these months, as the burn time drops to just 15 minutes. March marks the transition to high exposure, with an index of 6, while October and November see a decline to moderate levels and longer burn times of 25 to 30 minutes. To safeguard against UV-related health risks, it is essential to wear sunscreen, hats, and protective clothing, especially during the high-risk months of April to September.

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	6	9	10	10	10	9	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