UV Index in Warsaw, United States

Last updated: May 3, 2025

Understanding the UV Index in Warsaw, United States is crucial for safeguarding your skin health and preventing painful sunburns. With a climate classified as Dfb, residents face varying sun exposure throughout the day, typically peaking with a UV Index of 10 around midday. This elevated level underscores the importance of staying informed about UV radiation, as even short periods of sun exposure can lead to long-term skin damage. By being aware of the UV Index and taking appropriate precautions, residents can enjoy the sunny days of Warsaw while protecting their skin from potential harm.

Hourly UV Index in Warsaw

As the day begins, the UV Index starts off low, peaking at 1 around 7:00 AM. By 9:00 AM, it escalates to 3, signaling the sun's growing intensity. The real commitment to sun safety is needed as we approach noon, when the index skyrockets to 9 and reaches its maximum at 1:00 PM, hitting a blistering 10. Afterward, there's a gradual decline; by 3:00 PM, it falls to 7, and as the evening sets in, the index dips down to 1 at 7:00 PM, marking a safer time for outdoor activities. Remember to protect your skin 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	3	moderate	30 min
10:00	6	high	25 min
11:00	8	very high	15 min
12:00	9	very high	15 min
13:00	10	very high	15 min
14:00	9	very high	15 min
15:00	7	high	25 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 Warsaw

During the year, the UV Index shows significant seasonal variations, with peak levels reached in late spring and summer. The highest risk months are from April to September, where the UV Index often exceeds 8, categorized as very high. Particularly, May through August sees a consistent UV Index of 10, indicating a burn time of just 15 minutes for unprotected skin. In contrast, January, February, November, and December have much lower UV levels, with burn times spiking up to 45 minutes during December. To protect against skin damage, visitors and residents should take extra precautions during the high-risk months by wearing sunscreen with high SPF, protective clothing, and seeking shade, especially during peak hours.

Monthly Maximum UV Index for Warsaw, United States

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

The table above highlights how UV exposure in Warsaw 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.

Warsaw'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
Warsaw	3	4	6	8	10	10	10	9	8	6	4	2
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
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5