UV Index in Key Largo, United States

Last updated: June 2, 2025

In Key Largo, United States, staying informed about the UV Index is crucial for ensuring your skin's health and preventing sunburn. Understanding the levels of UV radiation helps you make smart decisions about sun protection, especially in a tropical climate where the sun’s intensity can soar throughout the day. With peak UV values reaching 13 around midday, residents and visitors alike must be vigilant to mitigate risks associated with high UV exposure. Embrace the beauty of Key Largo while safeguarding your skin by staying aware of the UV Index!

Hourly UV Index in Key Largo

As the sun rises on this bright day, the UV Index starts off relatively low, peaking at just 1 at both 7:00 AM and 8:00 AM. However, by 9:00 AM, it jumps to 3, signaling an increase in UV exposure. The intensity escalates quickly, reaching a notable 6 by 10:00 AM. The real intensity hits its peak at 12:00 PM, when the UV Index soars to a striking 12, followed closely by a high of 13 at 1:00 PM. Over the next few hours, the index gradually diminishes, but still remains significant with 10 at 3:00 PM and 7 by 4:00 PM. As evening approaches, the levels continue to decline, returning to 1 once dusk settles in at 7:00 PM. Be sure to protect your skin!

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	9	very high	15 min
12:00	12	extreme	10 min
13:00	13	extreme	10 min
14:00	12	extreme	10 min
15:00	10	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 Key Largo

The UV Index varies significantly throughout the year, peaking during the late spring and summer months. From February to September, the UV Index reaches very high to extreme levels, with the highest recorded in June at 13, indicating a burn time of just 10 minutes. The months of March through September are particularly high-risk and demand extra caution; outdoor activities should be planned thoughtfully, with protective measures such as sunscreen, hats, and UV protective clothing. Conversely, January and December see lower UV levels (index 6), categorized as high, while October and November return to a very high index (8-10), still warranting protective actions. Visitors and residents are advised to remain vigilant about UV exposure, especially from February through September, to minimize the risk of sunburn and long-term skin damage.

Monthly Maximum UV Index for Key Largo, United States

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

The table above highlights how UV exposure in Key Largo 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.

Key Largo'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
Key Largo	6	9	11	12	12	13	12	12	12	10	8	6