UV Index in Anchorage, United States

Last updated: July 2, 2025

Understanding the UV Index in Anchorage, United States is essential for protecting your skin and overall health. With varying UV levels throughout the day, knowledge of UV exposure is key to preventing sunburn and long-term skin damage. Anchorage, situated in a Dfc climate zone, experiences unique sunlight patterns, particularly during the long summer days, where UV Index values can peak at 7 during midday hours. By staying informed about the UV Index, residents and visitors can enjoy the outdoors safely while minimizing their risks of UV-related health issues.

Hourly UV Index in Anchorage

As the day unfolds, the UV Index climbs steadily, peaking at 7 between 2:00 PM and 3:00 PM. Starting from a low of 1 at 7:00 AM and 8:00 AM, the intensity gradually increases, reaching 3 by 10:00 AM. By noon, the index hits 6, indicating a notable risk of harm from unprotected sun exposure. It's during the mid-afternoon, around 1:00 PM and 2:00 PM, that sun safety becomes paramount, as the UV Index remains at its highest, 7. After this peak, the values begin to taper off, dropping to 5 at 4:00 PM and 4 at 5:00 PM, before declining further into the evening. Remember to protect your skin during those peak hours for a safe and enjoyable day outdoors!

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	2	low	45 min
10:00	3	moderate	30 min
11:00	4	moderate	30 min
12:00	6	high	25 min
13:00	6	high	25 min
14:00	7	high	25 min
15:00	6	high	25 min
16:00	5	moderate	30 min
17:00	4	moderate	30 min
18:00	3	moderate	30 min
19:00	2	low	45 min

Monthly UV Index Trends in Anchorage

The UV Index experiences significant seasonal changes, with high-risk months identified from June to July, where the index peaks at 6 and 7, categorized as high exposure. During these months, the burn time decreases to just 25 minutes, emphasizing the need for protective measures. As spring approaches, particularly in March, the index rises from low to moderate levels (3 to 5), which means visitors should start to be vigilant about UV exposure. Conversely, from November to February, the UV Index remains low (1), allowing for more extended outdoor activities with minimal risk of sunburn—up to 45 minutes. Residents and visitors are advised to take appropriate sun protection measures such as wearing sunscreen, hats, and sunglasses, particularly during the high-risk summer months, while maintaining awareness of the UV levels year-round.

Monthly Maximum UV Index for Anchorage, United States

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

The table above highlights how UV exposure in Anchorage 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.

Anchorage'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
Anchorage	1	1	3	4	5	6	7	5	4	2	1	1
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