UV Index in Riverdale, United States

Last updated: August 1, 2025

Understanding the UV Index in Riverdale, United States is crucial for safeguarding your skin and overall health. With UV levels peaking during the midday hours, reaching a high of 10 at 1 PM, awareness can help prevent painful sunburns and long-term skin damage. Given Riverdale's Cfa climate, characterized by hot summers, residents and visitors face heightened exposure to ultraviolet radiation. Being informed about the daily UV Index empowers you to take essential precautions, ensuring you enjoy the sun safely while protecting your skin.

Hourly UV Index in Riverdale

The UV Index reveals a dynamic ascent and descent throughout the day, peaking with intensity during midday. Starting at a gentle 1 at 7:00 AM, it climbs steadily, reaching 10 by 1:00 PM and maintaining this highest level until 2:00 PM. This critical window indicates significant sun exposure, and it’s essential to take precautions. As the afternoon progresses, the index begins to taper off, dropping to 8 at 3:00 PM, then gradually falling to 1 by 7:00 PM. This data highlights the importance of being sun-smart during the peak hours to minimize UV exposure risks.

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	5	moderate	30 min
11:00	7	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	8	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 Riverdale

Throughout the year, UV radiation levels exhibit distinct seasonal variations, with high-risk months typically occurring from April to October. During this period, the UV Index rises sharply, peaking at an extreme level of 11 in May and June, indicating a burn time of just 10 minutes. For visitors and residents, it's crucial to be vigilant during these months, particularly from March to October, when the UV Index consistently ranges from high to extreme. To protect yourself, consider wearing sunscreen, protective clothing, and seeking shade, especially between 10 AM and 4 PM, when UV exposure is greatest. As the year transitions into the cooler months of November and December, the risk decreases to a moderate category, allowing for more extended outdoor activities with less risk of sunburn.

Monthly Maximum UV Index for Riverdale, United States

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

The table above highlights how UV exposure in Riverdale 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.

Riverdale'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
Riverdale	3	6	7	9	11	11	10	10	9	8	5	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