ADDS METAR Help

Text Data

In addition to the graphical plots, a textual interface is available to retrieve data in raw format. For example, to retrieve the latest 24 hours worth of METARs for Denver International Airport, enter the corresponding airport identifier (KDEN for Denver International Airport) into the ICAO Station ID field. You may enter as many stations as you wish, separating each station with a space and/or comma. You must use the full 4-letter ICAO abbreviation. For abbreviations, please refer to the list of airports around the world that report METARs.

If desired, a decoded view of the data can be selected. Each piece of data is shown in a human readable format. For example, the latest Denver METAR would be shown as:

METAR for:KDEN (Denver Intl, CO, US)
Text:KDEN 030353Z 18008KT 10SM CLR M06/M09 A3006 RMK AO2 SLP237 T10561089
Temperature: -5.6°C ( 22°F)
Dewpont: -8.9°C ( 16°F) [RH = 77%]
Pressure (altimeter):30.07 inches Hg (1018.0 mb) [Sea level pressure: 1023.7 mb]
Winds:from the S (180 degrees) at 9 MPH (8 knots; 4.1 m/s)
Visibility:10 or more miles (16+ km)
Ceiling:at least 12,000 feet AGL
Clouds:sky clear below 12,000 feet AGL

URL Options

Here is a list of the URL options:

  • ids=id[+id...] - Specifies the stations to retrieve data
  • format={raw|decoded} - Specifies the format of output as either raw data or decoded output. The default is raw.
  • hours=hours - Specifies the number of hours to show. The default is the latest.
  • tafs={on|off} - Specifies to retrieve the latest TAF. The default is off.
  • date=yyyymmddhhnn - This selects a specific date and time to display. ADDS saves a week of METAR data so this can be used to get older METAR data. The default is current.

Example: /metar/data?ids=KDEN&format=decoded&taf=on

METAR Board

The METAR board is a time series display of weather conditions. There are two formats for the board: condensed and expanded.

Condensed view

The condensed view lists any number of stations along the vertical axist and time along the horizontal axis (See Fig 1). Each box (hourly observation) is color coded based on the level of the hazard. Green represents no hazard, yellow minimal hazard, red significant hazard and purple major hazard. The letters in the box represent the cause of the hazard. They are as follows:

  • Ceil - Ceiling
  • Vis - Visibility
  • Wx - Weather (thunderstorms, freezing rain)
  • WSpd - Wind speed
  • WGst - Wind gusts

There could be multiple hazards but only the top one from this list if shown.

METAR Board condensed
Figure 1: METAR Board condensed view

The cutoffs for each color are shown in Fig. 2. The default criteria use the flight category cutoffs

METAR Board legend
Figure 2: METAR Board color criteria

For more detailed information for each site, click on the station identifier. This will go to the expanded view for each site. In this view, each weather condition is listed along the vertical axis (See Fig. 3). These are:

  • Vis - Visibility in miles
  • Ceil - Cloud ceiling in 100s feet
  • Cover - Cloud cover: CLR, FEW, SCT, BKN, OVC
  • FltCat - Flight category: VFR, MVFR, IFR, LIFR
  • Wx - Weather
  • WDir - Wind direction
  • WSpd - Wind speed in knots
  • WGst - Wind gusts in knots
METAR Board expanded
Figure 3: METAR Board expanded view

URL Options

Here is a list of the URL options:

  • ids=id[+id...] - Specifies the stations to retrieve data
  • format={condensed|expanded} - Specifies the format of output as either condensed or expanded. The default is condensed.
  • date=yyyymmddhhnn - This selects a specific date and time to display. ADDS saves a week of METAR data so this can be used to get older METAR data. The default is current.


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