UV Index in Mason, United States

Last updated: May 3, 2025

In Mason, United States, being aware of the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels can help you prevent sunburns and reduce the risk of long-term skin damage. With a humid subtropical climate typical of the Cfa zone, Mason experiences varying UV exposure throughout the day, peaking at a dangerous level of 12 during midday. By keeping an eye on the UV Index, you can enjoy the outdoors while ensuring your skin stays protected from harmful rays.

Hourly UV Index in Mason

As the sun rises, the UV Index starts at a mild 1 at 7:00 AM and remains low until 9:00 AM, where it climbs to 3. By 10:00 AM, the index accelerates to a moderate 5, but it’s at 11:00 AM that the heat intensifies, reaching 8. The peak occurs at 12:00 PM with a staggering value of 10, followed by the highest point of the day at 1:00 PM and 2:00 PM, where it maxes out at 12. After this peak, the index gradually declines: it drops to 10 by 3:00 PM and continues to decrease to 7 at 4:00 PM. By the late afternoon, the intensity wanes, falling to 5 at 5:00 PM and back down to 2 by 6:00 PM, before settling at 1 again as day turns to dusk by 7:00 PM. Remember to shield yourself during the midday hours when the UV radiation is at its most intense!

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	8	very high	15 min
12:00	10	very high	15 min
13:00	12	extreme	10 min
14:00	12	extreme	10 min
15:00	10	very high	15 min
16:00	7	high	25 min
17:00	5	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Mason

Throughout the year, the UV Index exhibits significant fluctuations, highlighting the importance of sun safety for both visitors and residents. The highest risk months are from April to August, where the UV Index reaches extreme levels of 11 to 12, resulting in a burn time of just 10 minutes. In contrast, the UV Index is moderate (5) in January and December, allowing for longer exposure times of 30 minutes, while February and November present high levels at 6 and 7, respectively. As spring transitions into summer, it's crucial to take preventive measures during high UV Index months—wear protective clothing, apply broad-spectrum sunscreen, and seek shade during peak hours (10 AM to 4 PM)—to minimize the risk of skin damage and sunburn.

Monthly Maximum UV Index for Mason, United States

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

The table above highlights how UV exposure in Mason 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.

Mason'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
Mason	5	7	9	11	11	12	12	11	10	8	6	5
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5