Louisville UV index in September
Typical ultraviolet levels for Louisville during September, from the past year of data.
High
Louisville
High UV. Avoid the sun during peak hours and wear protective clothing, sunscreen, and a hat.
7.7
UV Index
September average
Low
Moderate
High
Very High
Extreme
September UV
7.6676
Risk level
High
Yearly peak
10.2785
Peak month
July
Louisville UV index — monthly trend
Average UV index by month over the past year, with September highlighted.
Visiting Louisville in September?
In September, Louisville's typical UV index is about 7.6676 — a high risk level. High UV. Avoid the sun during peak hours and wear protective clothing, sunscreen, and a hat.
Across the year, Louisville sees the strongest UV in Summer, peaking around 10.2785 in July. Plan sun protection accordingly.
