Aviation Digital Data Service (ADDS)

Output produced by METARs form (0558 UTC 18 January 2018)
found at http://www.aviationweather.gov/adds/metars/
 
METAR text: KSTL 180551Z 25006KT 10SM CLR M07/M13 A3046 RMK AO2 SLP331 T10671128 11056 21078 410391161 56020
Conditions at: KSTL (ST. LOUIS , MO, US) observed 0551 UTC 18 January 2018
Temperature: -6.7°C (20°F)
Dewpoint: -12.8°C (9°F) [RH = 62%]
Pressure (altimeter): 30.46 inches Hg (1031.6 mb)
[Sea-level pressure: 1033.1 mb]
Winds: from the WSW (250 degrees) at 7 MPH (6 knots; 3.1 m/s)
Visibility: 10 or more miles (16+ km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: no significant weather observed at this time