Chicago UV index in January
Typical ultraviolet levels for Chicago during January, from the past year of data.
Low
Chicago
Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
1.3
UV Index
January average UTC
Low
Moderate
High
Very High
Extreme
January UV
1.2796
Risk level
Low
Yearly peak
9.2667
Peak month
July
Chicago UV index — monthly trend
Average UV index by month over the past year, with January highlighted.
Visiting Chicago in January?
In January, Chicago's typical UV index is about 1.2796 — a low risk level. Low UV. You can safely enjoy being outside; the sun's rays are not very strong.
Across the year, Chicago sees the strongest UV in Summer, peaking around 9.2667 in July. Plan sun protection accordingly.
