Philadelphia UV index in September
Typical ultraviolet levels for Philadelphia during September, from the past year of data.
High
Philadelphia
High UV. Avoid the sun during peak hours and wear protective clothing, sunscreen, and a hat.
7.2
UV Index
September average
Low
Moderate
High
Very High
Extreme
September UV
7.2441
Risk level
High
Yearly peak
9.8446
Peak month
July
Philadelphia UV index — monthly trend
Average UV index by month over the past year, with September highlighted.
Visiting Philadelphia in September?
In September, Philadelphia's typical UV index is about 7.2441 — a high risk level. High UV. Avoid the sun during peak hours and wear protective clothing, sunscreen, and a hat.
Across the year, Philadelphia sees the strongest UV in Summer, peaking around 9.8446 in July. Plan sun protection accordingly.
