Prediction of ultraviolet radiation or UV index for Alton / St. Louis Regional with hourly data. Only times when the predicted UV index is greater than 0 (zero) are shown. UV data predicted in clear sky conditions.
Hourly forecast and daily maximum of the ultraviolet index expected for today in Alton / St. Louis Regional. UV data hour by hour.
Hourly forecast and daily maximum of the ultraviolet index expected for tomorrow in Alton / St. Louis Regional. UV data hour by hour.
Hourly forecast and daily maximum of the ultraviolet index expected for tuesday in Alton / St. Louis Regional. UV data hour by hour.
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