UV Index in Humboldt, United States

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents of Humboldt, United States, as it provides essential information for sun protection and skin health. With UV levels peaking during midday, reaching a maximum of 11 around noon, being aware of these fluctuations can help prevent painful sunburns and long-term skin damage. Humboldt's Cfa climate features mild summers, but it’s important to remember that UV radiation can be just as intense in cooler months. Stay informed about the UV Index to enjoy the sun safely while safeguarding your skin against its harmful effects.

Hourly UV Index in Humboldt

At dawn, the UV Index starts at a gentle 1 by 07:00, indicating minimal exposure risk. As the sun climbs higher, the intensity rises sharply, reaching a maximum of 11 between 12:00 and 13:00—a time when protective measures are crucial. The peak UV Index highlights the importance of sun safety, as conditions can be particularly harsh. The afternoon sees a gradual decline, dipping to 8 by 15:00 and further decreasing to 3 by 17:00. As evening approaches, the index wanes to a mellow 1 by 19:00, suggesting a return to safer exposure levels. Keep in mind that tracking the UV Index throughout the day can help protect your skin from harmful rays!

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	2	low	45 min
09:00	4	moderate	30 min
10:00	7	high	25 min
11:00	9	very high	15 min
12:00	11	extreme	10 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	8	very high	15 min
16:00	6	high	25 min
17:00	3	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Humboldt

Throughout the year, UV exposure varies significantly, with high-risk months primarily occurring from April to September. The UV Index peaks during June and July at 11, indicating an extreme risk of harm from unprotected sun exposure, where burn time is as short as 10 minutes. Early spring begins with moderate levels in January (UV Index 4) and escalates to very high levels in April (UV Index 10). As the summer progresses, residents and visitors should be especially cautious during peak hours, practicing sun safety measures such as wearing sunscreen, protective clothing, and seeking shade to reduce risk. As autumn approaches, UV levels decrease, dropping back to moderate levels by December, making it safer for prolonged outdoor activities.

Monthly Maximum UV Index for Humboldt, United States

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

The table above highlights how UV exposure in Humboldt 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.

Humboldt'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
Humboldt	4	6	7	10	10	11	11	10	9	7	5	3
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5