corporealfunk/metar.js

Javascript parser for METAR weather reports

metar.js

METAR (Meteorological Aviation Report) parser for Javascript

Demo: http://skydivejkl.github.io/metar.js/

Install

node.js or browserify

npm install metar

browser

<script src="metar.js"></script>

Example

Get reports from http://weather.noaa.gov/pub/data/observations/metar/stations/

// only required in node or browserify otherwise it's a global.
var parseMETAR = require("metar");

console.log(parseMETAR("EFJY 171950Z AUTO 27006KT 220V310 9999 FEW012 SCT015 BKN060 13/12 Q1006"));

{
    "station": "EFJY",
    "time": "2013-12-17T19:50:38.219Z",
    "auto": true,
    "wind": {
        "speed": 6,
        "gust": null,
        "direction": 270,
        "variation": {
            "min": 220,
            "max": 310
        },
        "unit": "KT"
    },
    "cavok": false,
    "visibility": 9999,
    "weather": null,
    "clouds": [
        {
            "abbreviation": "FEW",
            "meaning": "few",
            "altitude": 1200,
            "cumulonimbus": false
        },
        {
            "abbreviation": "SCT",
            "meaning": "scattered",
            "altitude": 1500,
            "cumulonimbus": false
        },
        {
            "abbreviation": "BKN",
            "meaning": "broken",
            "altitude": 6000,
            "cumulonimbus": false
        }
    ]
}

Changelog

1.0.0

• Renamed altimeter_in_hg to altimeterInHg and altimeter_hpa to altimeterInHpa for consistency
• Works in browsers without precompiling
• Bunch of bug fixes

0.3.0

• Parse REUP #16
• Added METAR|SPECI type parsing #15
• Added RVR parser

0.2.0

• Support negative dewpoint and air temp #10