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O'Fallon, Illinois, United States
38.5923°N, -89.9112°E
Wet-Bulb Temperature
-2.51°C
Air Temperature
0.57°C
Relative Humidity
59.00%
Last Updated
Mar 18, 2026 07:04:45
Disclaimer: The wet-bulb temperatures shown are estimates calculated using the Stull formula. For more information about wet-bulb temperature calculations, visit Omni Calculator's Wet-Bulb Temperature Calculator.