UV Index in Truro, United States

Last updated: July 2, 2025

Understanding the UV Index in Truro, United States is crucial for safeguarding your skin and overall health. With a Climate Zone of Cfa, residents and visitors can expect varying UV levels throughout the day, particularly peaking between 11 AM and 1 PM when the index soars to 9. Being informed about these UV levels is essential to prevent sunburn and long-term skin damage, making it important to plan outdoor activities accordingly. As Truro experiences significant sun exposure, knowing when to seek shade or apply sunscreen can help ensure you enjoy the beautiful outdoors while protecting your skin.

Hourly UV Index in Truro

The UV Index reveals a dynamic pattern throughout the day, starting at a mild 1 at 07:00 and steadily rising as the sun reaches its peak. By 10:00, it escalates to a moderate 6, reaching 8 at 11:00 and peaking at an intense 9 from 12:00 to 13:00. This period signifies the greatest caution for sun exposure, making it essential to seek shade and wear protective clothing. As the afternoon unfolds, the index begins to dip, dropping to 8 at 14:00, then declining further to 7 by 15:00, and tapering down to 1 by 19:00. Overall, it’s a day that encourages sun safety awareness, particularly during the midday hours when UV radiation is at its strongest.

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	9	very high	15 min
13:00	9	very high	15 min
14:00	8	very high	15 min
15:00	7	high	25 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Truro

Throughout the year, UV exposure varies significantly, with high-risk months occurring from April to September when the UV Index reaches very high levels (8-10) and the recommended burn time drops to just 15 minutes. Visitors and residents should exercise caution during these months, seeking shade and applying sunscreen frequently to protect their skin. In contrast, the low-risk months of January and December feature a UV Index of 2, allowing for longer exposure times of up to 45 minutes without significant risk. Notably, February to March presents a moderate risk, with UV Index values of 4-5 and burn times of 30 minutes, making it essential to be vigilant as spring approaches. As the seasons transition, it's crucial to adjust sun safety practices accordingly.

Monthly Maximum UV Index for Truro, United States

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

The table above highlights how UV exposure in Truro 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.

Truro'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
Truro	2	4	5	8	9	10	9	9	8	6	4	2
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