metno

A wrapper for the 'Locationforecast' weather api provided by the Norwegian Meteorological Institute.

Said api is a free and open weather api that provides weather data for any location in the world. It is used by many big open-source projects, like Home Assistant, as a featured weather data source.

Usage

Usage is simple. You just have to call the Weather.fetch method with the latitude, longitude, and optionally the altitude of the location you want to get the weather for. The method returns a Weather object that contains the weather data for the location.

import 'package:metno/metno.dart';

void main() async {
    var weather = await Weather.fetch(
        latitude: 51.5, longitude: -0.1, altitude: 11, userAgent: "demo");
    // To get the current weather data:
    print(weather.properties.timeseries.first.data.instant.details);
}

As you may have already noticed, the fetch method also takes an optional userAgent parameter. This is the user agent that will be used when fetching the data from the api. The default value is metno/1.0 (https://pub.dev/packages/metno), but you should change it to something more specific to your application. The api may block requests with generic user agents to prevent abuse.

Alternatively, you can use the Weather.parse method to parse a map of weather data that you have fetched from the api yourself, or have stored onto disk:

var weather = Weather.parse(json.decode(yourData));
print(weather.properties.meta.updatedAt);

Documentation

A detailed documentation for all the properties and error codes can be found here, at the official api documentation. If you have any problems or questions, feel free to open an issue.