Allentown UV index in September
Typical ultraviolet levels for Allentown during September, from the past year of data.
High UV. Avoid the sun during peak hours and wear protective clothing, sunscreen, and a hat.
September average
Allentown UV index — monthly trend
Average UV index by month over the past year, with September highlighted.
Visiting Allentown in September?
In September, Allentown's typical UV index is about 7.0381 — a high risk level. High UV. Avoid the sun during peak hours and wear protective clothing, sunscreen, and a hat.
Across the year, Allentown sees the strongest UV in Summer, peaking around 9.7109 in July. Plan sun protection accordingly.