Aviation Digital Data Service (ADDS)

Output produced by METARs form (1111 UTC 24 January 2019)
found at http://aviationweather.gov/metar/data/
 
METAR text: KARR 241052Z AUTO 00000KT 4SM BR CLR M16/M18 A2983 RMK AO2 SLP117 I1000 T11561178 TSNO $
Conditions at: KARR (CHICAGO/AURORA , IL, US) observed 1052 UTC 24 January 2019
Temperature: -15.6°C ( 4°F)
Dewpoint: -17.8°C (-0°F) [RH = 83%]
Pressure (altimeter): 29.83 inches Hg (1010.2 mb)
[Sea-level pressure: 1011.7 mb]
Winds: calm
Visibility: 4 miles ( 6 km)
Ceiling: at least 12,000 feet AGL
Clouds: sky clear below 12,000 feet AGL
Weather: BR  (mist)
SOME DATA ABOVE MAY BE INACCURATE!!!
"$" is an indication the sensor requires maintenance