St. Louis UV index in May
Typical ultraviolet levels for St. Louis during May, from the past year of data.
Very High
St. Louis
Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
8.8
UV Index
May average UTC
Low
Moderate
High
Very High
Extreme
May UV
8.8129
Risk level
Very High
Yearly peak
10.0513
Peak month
July
St. Louis UV index — monthly trend
Average UV index by month over the past year, with May highlighted.
Visiting St. Louis in May?
In May, St. Louis's typical UV index is about 8.8129 — a very high risk level. Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
Across the year, St. Louis sees the strongest UV in Summer, peaking around 10.0513 in July. Plan sun protection accordingly.
