UV Index in Newton, United States

Last updated: July 2, 2025

In Newton, United States, staying informed about the UV Index is crucial for safeguarding your skin and overall health. The UV Index indicates the strength of ultraviolet radiation from the sun, which can lead to painful sunburns and long-term skin damage. With a Cfa climate, Newton experiences varied UV levels throughout the day, peaking at 10 between noon and 1 PM, making midday sun exposure especially risky. Understanding these UV levels empowers residents to take proactive measures, ensuring a safer and healthier outdoor experience.

Hourly UV Index in Newton

At dawn, the UV Index starts at a mild 1 by 07:00, gradually climbing to 2 by 08:00 as the sun rises. The warmth intensifies, reaching 4 at 09:00 and peaking at a significant 10 between noon and 14:00, signaling the need for sun protection. As the afternoon rolls in, the index begins to dip, settling at 8 by 15:00 before tapering off further to 5 at 16:00. By the evening, the UV levels gracefully descend back to 2 at 18:00 and return to a safe 1 by 19:00, marking a day's journey through varying sun exposure. Be mindful of the midday sun, and stay protected 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	4	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	10	very high	15 min
14:00	10	very high	15 min
15:00	8	very high	15 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Newton

Throughout the year, UV exposure varies significantly, with the highest risks occurring from March to September. The UV Index peaks at 11 in May and June, categorizing these months as extreme risk, where the burn time is as short as 10 minutes. April also sees a surge, with a very high exposure category at UV Index 9. As the seasons transition, October to February exhibit moderate exposure levels, with burn times of 30 minutes in January and November. Visitors and residents are advised to take precautions during high-risk months, especially from March to September, by seeking shade, wearing protective clothing, and applying sunscreen regularly to minimize the risks associated with harmful UV radiation.

Monthly Maximum UV Index for Newton, United States

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

The table above highlights how UV exposure in Newton 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.

Newton'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
Newton	3	5	7	9	11	11	10	9	8	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