Obtain a WUnderground API key [here](https://www.wunderground.com/weather/api). A free account allows 500 requests per day and also a maximum of 10 per minute. See details [here](https://www.wunderground.com/weather/api/d/pricing.html).
To add Wunderground to your installation, add the following to your `configuration.yaml` file: ```yaml # Example configuration.yaml entry sensor: - platform: wunderground api_key: your_api_key monitored_conditions: - alerts - dewpoint_c ``` Configuration variables: - **api_key** (*Required*): The API key for Weather Underground. See above for details. - **pws_id** (*Optional*): You can enter a Personal Weather Station ID. The current list of Wunderground PWS stations is available [here](https://www.wunderground.com/weatherstation/ListStations.asp). If you do not enter a PWS ID, the current location information (latitude and longitude) from your `configuration.yaml` will be used to display weather conditions. - **lang** (*Optional*): Specify the language that the API returns. The current list of all Wunderground language codes is available [here](https://www.wunderground.com/weather/api/d/docs?d=language-support). If not specified, it defaults to English (EN). - **latitude** (*Optional*): Latitude coordinate to monitor weather of (required if **longitude** is specified). Defaults to coordinates defined in your `configuration.yaml`. - **longitude** (*Optional*): Longitude coordinate to monitor weather of (required if **latitude** is specified). Defaults to coordinates defined in your `configuration.yaml`. - **monitored_conditions** array (*Required*): Conditions to display in the frontend. The following conditions can be monitored. - **alerts**: Current severe weather advisories - **dewpoint_c**: Temperature in Celsius below which water droplets begin to condense and dew can form - **dewpoint_f**: Temperature in Fahrenheit below which water droplets begin to condense and dew can form - **dewpoint_string**: Text summary of dew point - **feelslike_c**: Feels like (or apparent) temperature in Celsius - **feelslike_f**: Feels like (or apparent) temperature in Fahrenheit - **feelslike_string**: Text summary of how the current temperature feels like - **heat_index_c**: Heat index (combined effects of the temperature and humidity of the air) in Celsius - **heat_index_f**: Heat index (combined effects of the temperature and humidity of the air) in Fahrenheit - **heat_index_string**: Text summary of current heat index - **elevation**: Elevation in feet - **location**: City and State - **observation_time**: Text summary of observation time - **precip_today_in**: Total precipitation in inches - **precip_today_metric**: Total precipitation in metric units - **precip_today_string**: Text summary of precipitation today - **precip_1d_mm** [[1d]](#1d): Forecasted precipitation intensity in millimeters - **precip_1d_in** [[1d]](#1d): Forecasted precipitation intensity in inches - **precip_1d** [[1d]](#1d): Forecasted precipitation probability in % - **pressure_in**: Atmospheric air pressure in inches - **pressure_mb**: Atmospheric air pressure in millibars - **pressure_trend**: Atmospheric air pressure trend signal (+/-) - **relative_humidity**: Relative humidity - **station_id**: Your personal weather station (PWS) ID - **solarradiation**: Current levels of solar radiation - **temperature_string**: Temperature text combining Fahrenheit and Celsius - **temp_c**: Current temperature in Celsius - **temp_f**: Current temperature in Fahrenheit - **temp_high_record_c**: Maximum temperature measured in Celsius - **temp_high_record_f**: Maximum temperature measured in Fahrenheit - **temp_low_record_c**: Minimal temperature measured in Celsius - **temp_low_record_f**: Minimal temperature measured in Fahrenheit - **temp_high_avg_c**: Average high for today in Celsius - **temp_high_avg_f**: Average high for today in Fahrenheit - **temp_low_avg_c**: Average low for today in Celsius - **temp_low_avg_f**: Average low for today in Fahrenheit - **temp_high_1d_c** [[1d]](#1d): Forecasted high temperature in Celsius - **temp_high_1d_f** [[1d]](#1d): Forecasted high temperature in Fahrenheit - **temp_low_1d_c** [[1d]](#1d): Forecasted low temperature in Celsius - **temp_low_1d_f** [[1d]](#1d): Forecasted low temperature in Fahrenheit - **UV**: Current levels of UV radiation. See [here](https://www.wunderground.com/resources/health/uvindex.asp) for explanation. - **visibility_km**: Average visibility in km - **visibility_mi**: Average visibility in miles - **weather**: A human-readable text summary with picture from Wunderground. - **weather_1d** [[12h]](#12h): A human-readable weather forecast using imperial units. - **weather_1d_metric** [[12h]](#12h): A human-readable weather forecast using metric units. - **weather_1h** [[1h]](#1h): Weather conditions in 1 hour. (e.g., "Thunderstorm" etc.) - **wind_degrees**: Wind degrees - **wind_dir**: Wind direction - **wind_gust_kph**: Wind gusts speed in kph - **wind_gust_mph**: Wind gusts speed in mph - **wind_gust_1d_kph** [[1d]](#1d): Max. forecasted Wind in kph - **wind_gust_1d_mph** [[1d]](#1d): Max. forecasted Wind in mph - **wind_kph**: Current wind speed in kph - **wind_mph**: Current wind speed in mph - **wind_1d_kph** [[1d]](#1d): Forecasted wind speed in kph - **wind_1d_mph** [[1d]](#1d): Forecasted wind speed in mph - **wind_string**: Text summary of current wind conditions All the conditions listed above will be updated every 5 minutes. ### {% linkable_title Forecasts %} _12 hour forecasts_ Monitored conditions marked above with [12h] are 12 hour forecasts. To get a forecast for different period/daytime replace the `_1d_` part of the sensor name. e.g., `weather_2n` will give you forecast for tomorrow night. Valid values for day are `1` to `4` and valid values for daytime are `d` or `n`. _Daily forecasts_ Conditions above marked with [1d] are daily forecasts. To get forecast for different day, replace the number in `_1d_` part of the sensor name. Valid values are from `1` to `4`. _Hourly forecasts_ Conditions marked with [1h] are hourly forecasts. To get forecast for different hour, replace the number in the `_1h_` part of the sensor name with `1` to `36`. e.g., `weather_24h` will give you weather in 24 hours. ### {% linkable_title Additional examples %} #### Daily forecast ```yaml sensor: - platform: wunderground api_key: your_api_key monitored_conditions: - weather_1d_metric - weather_1n_metric - weather_2d_metric - weather_2n_metric - weather_3d_metric - weather_3n_metric - weather_4d_metric - weather_4n_metric group: daily_forecast: name: Daily Forecast entities: - sensor.pws_weather_1d_metric - sensor.pws_weather_1n_metric - sensor.pws_weather_2d_metric - sensor.pws_weather_2n_metric - sensor.pws_weather_3d_metric - sensor.pws_weather_3n_metric - sensor.pws_weather_4d_metric - sensor.pws_weather_4n_metric ```  #### Weather overview ```yaml sensor: - platform: wunderground api_key: your_api_key monitored_conditions: - temp_high_record_c - temp_high_1d_c - temp_c - temp_low_1d_c - temp_low_record_c - precip_1d - precip_1d_mm - wind_kph - wind_1d_kph - alerts group: weather_overview: name: Weather overview entities: - sensor.pws_weather_1d_metric - sensor.pws_temp_high_record_c - sensor.pws_temp_high_1d_c - sensor.pws_temp_c - sensor.pws_temp_low_1d_c - sensor.pws_temp_low_record_c - sensor.pws_precip_1d - sensor.pws_precip_1d_mm - sensor.pws_wind_kph - sensor.pws_wind_1d_kph - sensor.pws_alerts ``` Note: While the platform is called “wunderground” the sensors will show up in Home Assistant as “PWS” (eg: sensor.pws_weather).
Additional details about the API are available [here](https://www.wunderground.com/weather/api/d/docs).