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METAR Decoding

In '... 18/12 ...' near the end of a METAR, what are the two values?

  • A.Temperature 18 degrees C and dew point 12 degrees C
  • B.Temperature 18 degrees F and altitude 1,200 feet
  • C.Wind chill 18 and humidity 12 percent
Correct answer

A. Temperature 18 degrees C and dew point 12 degrees C

Why

The temperature and dew point group is reported in degrees Celsius, temperature first and dew point second. A small spread between them suggests air close to saturation.

Source: FAA-G-8082-22 Ch. 3 · ACS knowledge area: Aviation Weather Sources and Effects · From the Aviation Weather practice bank (WEA-017).

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