UV Index in Calera, United States

Last updated: May 3, 2025

In Calera, United States, understanding the UV Index is crucial for maintaining skin health and preventing sunburn. With the region experiencing a Cfa climate, residents and visitors alike face varying UV exposure throughout the day, peaking in the early afternoon with levels reaching 11, indicating an extreme risk of harm from unprotected sun exposure. By keeping an eye on UV levels, you can take proactive measures to safeguard your skin, ensuring enjoyable time outdoors while minimizing long-term health risks. Whether it's seeking shade or applying sunscreen, being UV-aware in Calera allows you to fully embrace the beauty of the outdoors while protecting yourself from harmful effects.

Hourly UV Index in Calera

The UV Index for the day showcases a striking pattern, starting moderate at 7:00 AM with a value of 1. As the sun climbs higher, the index steadily rises, hitting 3 by 9:00 AM, and then surging to a peak of 11 between 1:00 PM and 2:00 PM. This indicates a high risk of harm from unprotected sun exposure during midday. Following the peak, the UV Index gradually declines to 4 by 5:00 PM and further decreases to 1 by 7:00 PM, emphasizing the critical importance of sun protection during the intense midday hours. It’s advisable to seek shade and wear sunscreen if you're outside during the peak period!

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	11	extreme	10 min
14:00	11	extreme	10 min
15:00	9	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 Calera

Throughout the year, the UV Index exhibits significant seasonal changes, with the highest levels occurring from June to August, classified as extreme at a UV Index of 11, where the burn time is reduced to just 10 minutes. The spring months of March to May also show very high UV exposure, particularly in April and May with a UV Index of 10. Visitors and residents should be especially cautious from March until September, as these months represent the high-risk periods for UV exposure. It is essential to protect oneself by wearing sunscreen, hats, and UV-protective clothing, particularly during peak sun hours, and be mindful of the reduced burn times as the UV Index rises from moderate in January and December to extreme in summer months.

Monthly Maximum UV Index for Calera, United States

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

The table above highlights how UV exposure in Calera 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.

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