A simple, fast, asynchronous Dart/Flutter package for accessing the Open-Meteo API.
All features from the Open-Meteo API have been implemented (some are limited). Be sure to read Open Meteo's Terms of Use before using this package in your project.
MathNerd28 🛠️ | 💛 v1.1.0 - v2 |
Each of the nine features available in Open-Meteo is represented by its class: WeatherApi
, HistoricalApi
, EnsembleApi
, ClimateApi
, MarineApi
, AirQualityApi
, GeocodingApi
, ElevationApi
and FloodApi
.
Note
All inputs to the API have been adapted to Dart-friendly variables.
Time arguments are DateTime
objects and many parameters have enum representations.
For example, to get the hourly temperature in Celsius in London, 2 meters above sea level using WeatherApi
, and only get information from 2024-08-10
to 2024-08-12
:
import 'package:open_meteo/open_meteo.dart';
void main() async {
final weather = WeatherApi();
final response = await weather.request(
latitude: 52.52,
longitude: 13.41,
hourly: {WeatherHourly.temperature_2m},
startDate: DateTime(2024, 8, 10),
endDate: DateTime(2024, 8, 12),
temperature_unit: TemperatureUnit.celsius,
);
final data = response.hourlyData[WeatherHourly.temperature_2m]!;
final currentTemperature = data.values;
print(currentTemperature);
}
In this example, the result is a Map<DateTime, double>
:
{
2024-08-08 05:00:00.000: 20.09549903869629,
2024-08-08 06:00:00.000: 19.89550018310547,
...,
2024-08-13 03:00:00.000: 18.788999557495117,
2024-08-13 04:00:00.000: 17.288999557495117,
}
Tip
In each API, there are two main methods:
-
request
returns a Dart object, and throws an exception if the API returns an error response, recommended for most use cases. -
requestJson
returns a JSON map, containing either the data or the raw error response. This method exists solely for debugging purposes, do not use in production.
Note
The Geocoding
and Elevation
are the two exceptions as they only have searchJson
method available, the upstream API doesn't implement FlatBuffers.
var result = await GeocodingApi().requestJson(name: "London");
var result = await ElevationApi().requestJson(latitudes: [52.52], longitudes: [13.41]);
- Every API now has
Api
suffix.
Weather() -> WeatherApi()
- Except for enum variables, snake_case variables are changed to lowerCamelCase to follow Dart's standard linter rules.
Weather(temperature_unit: TemperatureUnit.celsius) -> WeatherApi(temperatureUnit: TemperatureUnit.celsius)
-
Hourly
,Daily
,Current
enums are no longer available, instead, each API has their own set of enums:WeatherHourly
,WeatherDaily
,WeatherCurrent
enums forWeatherApi
.HistoricalHourly
,HistoricalDaily
enums forHistoricalApi
.- And so on...
-
latitude
,longitude
, and some variables now moved to request methods, API classes only have some settings related to the formatting result:
// 1.1.0
var weather = Weather(
latitude: 52.52,
longitude: 13.41,
temperature_unit: TemperatureUnit.celsius
);
var hourly = [Hourly.temperature_2m];
await weather.request(hourly: hourly);
// 2.0.0
final weather = WeatherApi(temperatureUnit: TemperatureUnit.celsius);
final response = await weather.request(
latitude: 52.52,
longitude: 13.41,
hourly: {WeatherHourly.temperature_2m},
);
Before reporting an issue, please check Open-Meteo's docs to make sure you're calling the correct endpoint with the correct arguments. Contributions are welcome!