Boston UV index in January
Typical ultraviolet levels for Boston during January, from the past year of data.
Low
Boston
Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
1
UV Index
January average
Low
Moderate
High
Very High
Extreme
January UV
1.0422
Risk level
Low
Yearly peak
7.9149
Peak month
July
Boston UV index — monthly trend
Average UV index by month over the past year, with January highlighted.
Visiting Boston in January?
In January, Boston's typical UV index is about 1.0422 — a low risk level. Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
Across the year, Boston sees the strongest UV in Summer, peaking around 7.9149 in July. Plan sun protection accordingly.
