Get latest weather reports from weather stations worldwide
The information comes from the National Oceanic and Atmospheric Association's raw data source.
require 'rubygems' if RUBY_VERSION < '1.9' require 'metar'
This prints the latest weather report for Portland International Airport:
station = Metar::Station.find_by_cccc('KPDX') puts station.report.to_s
Find a country's weather stations:
spanish = Metar::Station.find_all_by_country('Spain')
station = Metar::Station.find_by_cccc('KPDX') parser = station.parser puts parser.temperature.value
metar_string = "KHWD 280554Z AUTO 29007KT 10SM OVC008 14/12 A3002 RMK AO2 SLP176 T01390117 10211\n" raw = Metar::Raw::Data.new(metar_string) parser = Metar::Parser.new(raw)
Translations are available for the following languages (and region):
- Thanks to the I18n gem's fallback mechanism, under regional locales, language generic translations will be used if a region-specific translation is not available. I.e.
I18n.locale = :'en-US' I18n.t('metar.station_code.title') # station code
By default, the parser runs in 'loose' compliance mode. That means that it tries to accept non-standard input.
If you only want to accept standards-compliant METAR strings, do this:
Metar::Parse.compliance = :strict
This version introduces a major change to the Metar::Raw class.
Previously, this class downloaded METAR data from the NOAA FTP site. The old functionality has been moved to Metar::Raw::Noaa. The new class, Metar::Raw::Data accepts a METAR string as a parameter - allowing the user to parse METAR strings without necessarily contacting the NOAA.
Other Ruby libraries offering METAR parsing:
There are many reports (WMO) that these libraries do not parse.
There are two gems which read the National Oceanic and Atmospheric Association's XML weather data feeds: