UV Index in Blair, United States

Last updated: November 2, 2025

Understanding the UV Index in Blair, United States, is crucial for protecting your skin and overall health. With the region experiencing a Cfa climate, it’s important to recognize how UV levels can fluctuate throughout the day. High UV exposure, particularly during peak hours around noon, can lead to sunburn and long-term skin damage. By staying informed about the UV Index, you can take proactive steps to safeguard your skin while enjoying the sunny days Blair has to offer. Remember, a little awareness goes a long way in maintaining your health and vitality under the sun!

Hourly UV Index in Blair

At sunrise, the UV Index sits comfortably at 1, gradually rising as the day unfolds. By 09:00, it reaches 3, signaling the start of increased sun exposure. The real heat kicks in by 10:00, soaring to 5, and peaks dramatically at 12:00 with an alarming 10. The zenith arrives at 13:00, hitting 11, followed closely by a high of 12 at 14:00—an essential reminder to seek shade and protect your skin. As daylight wanes, the UV Index declines, tapering off to 10 by 15:00, and returning to a more manageable 5 at 17:00. By the time the sun sets, it cools down to 3 at 18:00, and finally drops to 1 by 19:00, highlighting the critical hours to stay sun-safe during midday!

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	0	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	3	moderate	30 min
11:00	5	moderate	30 min
12:00	5	moderate	30 min
13:00	5	moderate	30 min
14:00	5	moderate	30 min
15:00	4	moderate	30 min
16:00	2	low	45 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Blair

Throughout the year, the UV Index demonstrates notable seasonal changes, with the most intense exposure occurring from April to August. During these months, the UV Index reaches extreme levels (10-12), significantly reducing the burn time to just 10 minutes. March and September also pose risks with very high levels (8-10), allowing for a burn time of only 15 minutes. Consequently, February and October present high levels (6-7), where protective measures are still advised with adjusted burn times of 25 minutes. Residents and visitors should exercise caution and protect their skin, especially during the high-risk months of April through August, by using sunscreen, wearing protective clothing, and limiting sun exposure during peak hours.

Monthly Maximum UV Index for Blair, United States

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

The table above highlights how UV exposure in Blair 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.

Blair'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
Blair	4	6	8	10	11	11	12	11	10	7	5	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5