Parse METAR information into structured JavaScript object. The structure of the returned object is closely related to the API response of CheckWX.
Installation: npm install aewx-metar-parser --save
This METAR parser returns the following parts of a METAR string:
- ICAO code
- Date / time
- Wind speed (in kts, mps) & direction
- Visibility (in meters and miles)
- Weather phenomena
- Clouds
- Temperature (in °C & °F) & humidity
- Barometer pressure (in InHg, kpa & mb)
'use strict';
const metarParser = require('aewx-metar-parser');
const metarObject = metarParser('KSFO 070121Z 19023KT 1 1/2SM R28R/6000VP6000FT -RA BKN004 BKN013 OVC035 15/12 A2970 RMK AO2 T01500122 PNO $');…returns:
{
raw_text: 'KSFO 070121Z 19023KT 1 1/2SM R28R/6000VP6000FT -RA BKN004 BKN013 OVC035 15/12 A2970 RMK AO2 T01500122 PNO $',
raw_parts: [
'KSFO',
'070121Z',
'19023KT',
'3/2SM',
'R28R/6000VP6000FT',
'-RA',
'BKN004',
'BKN013',
'OVC035',
'15/12',
'A2970',
'RMK',
'AO2',
'T01500122',
'PNO',
'$'
],
icao: 'KSFO',
observed: Date('2019-01-07T01:21:03.232Z'),
wind: {
degrees: 190,
speed_kts: 23,
speed_mps: 11.832222176208026,
gust_kts: 23,
gust_mps: 11.832222176208026
},
visibility: {
miles: "1.5",
miles_float: 1.5,
meters: "2500",
meters_float: 2414.016
},
conditions: [
{ code: '-'},
{ code: 'RA'}
],
clouds: [
{ code: 'BKN', base_feet_agl: 400, base_meters_agl: 121.92 },
{ code: 'BKN', base_feet_agl: 1300, base_meters_agl: 396.24 },
{ code: 'OVC', base_feet_agl: 3500, base_meters_agl: 1066.8 }
],
ceiling: {
code: 'OVC',
feet_agl: 3500,
meters_agl: 1066.8
},
temperature: {
celsius: 15,
fahrenheit: 59
},
dewpoint: {
celsius: 12,
fahrenheit: 53.6
},
humidity_percent: 82.26135295757305,
barometer: {
hg: 29.7,
kpa: 100.57572661390854,
mb: 1005.7572661390855
},
flight_category: 'VFR'
}Wikipedia has an article on METAR information explaining the very basics.
These sites make METAR information publicly available:
Author: Frank Boës
Copyright & license: See LICENSE.txt