diff --git a/angular-weather.js b/angular-weather.js
new file mode 100644
index 0000000..3a2124f
--- /dev/null
+++ b/angular-weather.js
@@ -0,0 +1,195 @@
+'use strict';
+
+angular.module('angular-weather', [])
+  .constant('openweatherEndpoint', 'http://api.openweathermap.org/data/2.5/weather')
+  .constant('Config', {
+    openweather: {
+      apikey: ''
+    }
+  })
+  .directive('nwWeatherTemperature', function () {
+    return {
+      restrict: 'EA',
+      template: '<div> {{ctrlWeather.data.temperature | number:0 }}&deg; <i class="wi {{ctrlWeather.data.iconClass}}"></i></div>',
+      controller: function(nwWeather, nwWeatherIcons) {
+        var weather = this;
+
+        // Request the weather data.
+        nwWeather.get(this.account).then(function(response) {
+          weather.data = response;
+          weather.data.iconClass = nwWeatherIcons[response.icon];
+        });
+      },
+      controllerAs: 'ctrlWeather',
+      bindToController: true,
+      // Isolate scope.
+      scope: {
+        account: '='
+      }
+    };
+  })
+  .service('nwWeather', function ($q, $http, $timeout, $state, $rootScope, openweatherEndpoint, nwWeatherIcons, Config) {
+    var self = this;
+
+    // A private cache key.
+    var cache = {};
+
+    // Promise in progress of Weather.
+    var getWeather;
+
+    // Update event broadcast name.
+    var broadcastUpdateEventName = 'nwWeatherChanged';
+
+    /**
+     * Return the promise with the category list, from cache or the server.
+     *
+     * @param accountId - int
+     *  The account ID.
+     * @param categoryId - int
+     *  The category ID.
+     *
+     * @returns {Promise}
+     */
+    this.get = function(account) {
+      getWeather = $q.when(getWeather || angular.copy(cache.data) || getWeatherFromServer(account));
+
+      // Clear the promise cached, after resolve or reject the promise. Permit access to the cache data, when
+      // the promise excecution is done (finally).
+      getWeather.finally(function getWeatherFinally() {
+        getWeather = undefined;
+      });
+
+      return getWeather;
+    };
+
+    /**
+     * Return Weather array from the server.
+     *
+     * @returns {$q.promise}
+     */
+    function getWeatherFromServer(account) {
+      var deferred = $q.defer();
+      var url = openweatherEndpoint;
+      var params = {
+        lat: account.center.lat,
+        lon: account.center.lng,
+        units: 'metric',
+        APPID: Config.openweather.apikey || ''
+      };
+      $http({
+        method: 'GET',
+        url: url,
+        params: params,
+        withoutToken: true,
+        cache: true
+      }).success(function(data) {
+        // Prepare the Weather object.
+        var weatherData = prepareWeather(data);
+        setCache(weatherData);
+        deferred.resolve(weatherData);
+      });
+
+      return deferred.promise;
+    }
+
+    /**
+     * Save Weather in cache, and broadcast en event to inform that the Weather data changed.
+     *
+     * @param data
+     *    Collection resulted from the request.
+     */
+    function setCache(data) {
+      // Cache Weather data.
+      cache = {
+        data: data,
+        timestamp: new Date()
+      };
+      // Clear cache in 10 minute.
+      $timeout(function() {
+        cache.data = undefined;
+      }, 600000);
+      $rootScope.$broadcast(broadcastUpdateEventName);
+    }
+
+    /**
+     * Prepare Weather object with order by list, tree and collection indexed by id.
+     *
+     * Return the Weather object into a promises.
+     *
+     * @param getWeather - {$q.promise)
+     *  Promise of list of Weather, comming from cache or the server.
+     * @param accountId - int
+     *  The account ID.
+     *
+     */
+    function prepareWeather(weatherData) {
+
+      return {
+        temperature: weatherData.main.temp,
+        icon: (angular.isDefined(nwWeatherIcons[weatherData.weather[0].icon])) ? weatherData.weather[0].icon : weatherData.weather[0].id,
+        description: weatherData.weather[0].description
+      }
+    }
+
+    $rootScope.$on('nwClearCache', function() {
+      cache = {};
+    });
+
+  })
+  .factory('nwWeatherIcons', function() {
+    // * All the codes by are based in the openweather API
+    //  http://openweathermap.org/wiki/API/Weather_Condition_Codes
+    // * Icon based:
+    //  in http://erikflowers.github.io/weather-icons/cheatsheet/index.html
+    return {
+      '200': 'wi-storm-showers ',
+      '201': 'wi-storm-showers ',
+      '202': 'wi-storm-showers ',
+      '210': 'wi-thunderstorm ',
+      '211': 'wi-thunderstorm ',
+      '212': 'wi-thunderstorm ',
+      '221': 'wi-lightning',
+      '230': 'wi-storm-showers',
+      '231': 'wi-storm-showers',
+      '232': 'wi-storm-showers',
+      '300': 'wi-sprinkle',
+      '301': 'wi-sprinkle',
+      '302': 'wi-rain-mix',
+      '310': 'wi-rain-mix',
+      '311': 'wi-rain',
+      '312': 'wi-rain',
+      '321': 'wi-rain-wind',
+      '500': 'wi-sprinkle',
+      '501': 'wi-showers',
+      '502': 'wi-rain-mix',
+      '503': 'wi-rain',
+      '504': 'wi-rain-wind',
+      '511': 'wi-snow',
+      '520': 'wi-rain-mix',
+      '521': 'wi-rain',
+      '522': 'wi-rain-wind',
+      '600': 'wi-snow',
+      '601': 'wi-snow',
+      '602': 'wi-snow',
+      '611': 'wi-hail',
+      '621': 'wi-snow',
+      '701': 'wi-fog',
+      '711': 'wi-fog',
+      '721': 'wi-fog',
+      '731': 'wi-fog',
+      '741': 'wi-fog',
+      '01d': 'wi-day-sunny',
+      '01n': 'wi-night-clear',
+      '02d': 'wi-day-cloudy',
+      '02n': 'wi-night-cloudy',
+      '03d': 'wi-cloudy',
+      '04d': 'wi-cloudy',
+      '900': 'wi-tornado',
+      '901': 'wi-thunderstorm',
+      '902': 'wi-lightning',
+      '903': 'wi-thermometer-exterior',
+      '904': 'wi-thermometer',
+      '905': 'wi-strong-wind',
+      '906': 'wi-hail'
+    };
+  });