UV Index in Danbury, United States

Last updated: May 3, 2025

Understanding the UV Index in Danbury, United States, is essential for protecting your skin from harmful ultraviolet radiation. With peak levels reaching a maximum of 12 around midday, awareness of UV levels can help you take necessary precautions against sunburn and long-term skin damage. Danbury's humid subtropical climate not only brings warm summers but also increases the risk of UV exposure throughout the year. By staying informed about the UV Index, residents can enjoy the outdoors safely and prioritize skin health, ensuring that sunny days are always a source of joy rather than concern.

Hourly UV Index in Danbury

As the sun rises, the UV Index remains low, starting at a gentle 1 at 7:00 AM and 8:00 AM. However, as the morning progresses, a gradual increase is observed, reaching 3 by 9:00 AM. The intensity peaks dramatically at 12:00 PM with an alarming 11, and it hits its maximum of 12 at 1:00 PM, indicating a significant risk of harm from unprotected sun exposure. The UV levels then begin to taper off, descending to 9 by 3:00 PM and dropping further to 2 by 6:00 PM. As the day winds down, the index returns to a mild 1 by 7:00 PM, reminding us that while midday sun can be fierce, caution is advised at peak hours for skin safety.

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	3	moderate	30 min
10:00	6	high	25 min
11:00	8	very high	15 min
12:00	11	extreme	10 min
13:00	12	extreme	10 min
14:00	11	extreme	10 min
15:00	9	very high	15 min
16:00	6	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 Danbury

Throughout the year, UV levels exhibit significant seasonal changes. January sees a moderate UV Index of 5, while February and March jump to 8 and 9, respectively, indicating very high exposure risks with short burn times of just 15 minutes. The peak months for UV exposure are from April to August, where the Index reaches an extreme level of 11 to 12, necessitating caution with a burn time of only 10 minutes. As the year progresses, UV levels decrease, but October remains notably high at 9, followed by November with a high category of 7. For visitors and residents alike, it is crucial to take protective measures during the high-risk months of April through September and remain vigilant, using sunscreen, wearing protective clothing, and seeking shade to minimize the risk of skin damage.

Monthly Maximum UV Index for Danbury, United States

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

The table above highlights how UV exposure in Danbury 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.

Danbury'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
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5
Danbury	5	8	9	11	11	12	12	12	11	9	7	5