Boston UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index5.8
- Avg Clouds42%
- Max Temp23.9 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Boston, United States 
will reach a high of 5.8 today. This means a moderate level of sun exposure. See our tips below to stay safe!
Last checked: 2025-09-18
Hourly Forecast Chart
Today's Safety Tips
The sun is a bit strong. Find some shade during midday. Wear a hat, sunglasses, and use SPF 30+ sunscreen if you'll be outside for a while.
Boston's UV Index
Boston's UV index varies throughout the year, typically peaking around 7 to 8 in summer and dropping to 1 or 2 in winter. Spring and fall have moderate UV levels near 4 to 5.
Weather Seasons
Boston experiences four distinct seasons: cold, snowy winters; warm, sometimes humid summers; and brief, colorful springs and autumns with mild temperatures. Snowfall is common in winter, while spring and fall bring more rain.
Boston's Climate
Compared to the wider New England region, Boston tends to have milder coastal weather with less extreme cold than inland areas. Neighboring cities like New York City are warmer in winter, while Boston is colder and snowier due to its northern location.
Hourly UV Index Trend
See the UV index hour by hour for Boston. When the level is high, it's smart to find some shade.
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