UV Index in Knob Noster, United States

Last updated: June 2, 2025

Understanding the UV Index in Knob Noster, United States is crucial for maintaining skin health and preventing sunburn. As a resident or visitor of this charming town, being aware of daily UV levels can help you take the necessary precautions to protect yourself from harmful ultraviolet radiation. With a Cfa climate that offers warm summers and ample sunshine, Knob Noster experiences significant UV exposure, especially between 10 AM and 2 PM, when the index peaks at levels of 10 and 11. By monitoring the UV Index, you can enjoy the outdoors safely while safeguarding your skin from damage.

Hourly UV Index in Knob Noster

The UV Index for today shows a dramatic rise as the sun ascends into the sky. Starting at a mild 1 by 07:00, the index gradually builds, reaching 3 by 09:00 and peaking at an intense 11 at 13:00—a level where sun protection is crucial. From this pinnacle, the values start to decline, tapering off to 10 at 14:00 and then gradually decreasing through the afternoon and evening, with values of 6 at 16:00 and sliding down to 1 by 19:00. Plan your outdoor activities accordingly, and remember to protect your skin during those peak hours!

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	3	moderate	30 min
10:00	6	high	25 min
11:00	8	very high	15 min
12:00	10	very high	15 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	9	very high	15 min
16:00	6	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 Knob Noster

Throughout the year, seasonal variations in UV Index highlight the importance of sun safety. The high-risk months for UV exposure occur from April to August, where the index reaches extreme levels of 11 in June and July, with a burn time as short as 10 minutes. As visitors and residents engage in outdoor activities during these peak months, it's crucial to implement protective measures such as wearing sunscreen, protective clothing, and seeking shade during the hottest parts of the day. In contrast, the UV Index during the winter months (January, February, and December) remains in the moderate range, with burn times of 30 minutes. Nonetheless, it’s still advisable to take precautions, especially during midday hours, to safeguard against UV damage year-round.

Monthly Maximum UV Index for Knob Noster, United States

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

The table above highlights how UV exposure in Knob Noster 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.

Knob Noster'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
Knob Noster	3	5	6	10	10	11	11	10	9	6	4	3
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