Weather Underground (WUnderground)


The wunderground platform uses Weather Underground as a source for current weather information.

Obtain a WUnderground API key here. They no longer offer free API keys, and all keys must be paid for. At this time existing free keys will continue to work, but will be disabled Dec 31, 2018. As of Sept 6, 2018 Weather Underground states they are declaring the End of Service for the Weather Underground API. They say they will develop new plans for non-commercial users. No timeline for this has been announced. Please consider this when using the following information.

To add Wunderground to your installation, add the following to your configuration.yaml file:

# Example configuration.yaml entry
sensor:
  - platform: wunderground
    api_key: YOUR_API_KEY
    monitored_conditions:
      - alerts
      - dewpoint_c

Configuration Variables

api_key

(string)(Required)The API key for Weather Underground. See above for details.

pws_id

(string)(Optional)You can enter a Personal Weather Station ID. The current list of Wunderground PWS stations is available here. 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

(string)(Optional)Specify the language that the API returns. The current list of all Wunderground language codes is available here. If not specified, it defaults to English (EN).

Default value: EN

latitude

(string)(Optional)Latitude coordinate to monitor weather of (required if longitude is specified).

Default value: Coordinates defined in your configuration.yaml

longitude

(string)(Optional)Longitude coordinate to monitor weather of (required if latitude is specified).

Default value: Coordinates defined in your configuration.yaml

monitored_conditions

(list)(Required)Conditions to display in the frontend. The following conditions can be monitored.

Default value: symbol

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]: Forecasted precipitation intensity in millimeters

precip_1d_in

[1d]: Forecasted precipitation intensity in inches

precip_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]: Forecasted high temperature in Celsius

temp_high_1d_f

[1d]: Forecasted high temperature in Fahrenheit

temp_low_1d_c

[1d]: Forecasted low temperature in Celsius

temp_low_1d_f

[1d]: Forecasted low temperature in Fahrenheit

UV

Current levels of UV radiation. See here 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]: A human-readable weather forecast using imperial units.

weather_1d_metric

[12h]: A human-readable weather forecast using metric units.

weather_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]: Max. forecasted Wind in kph

wind_gust_1d_mph

[1d]: Max. forecasted Wind in mph

wind_kph

Current wind speed in kph

wind_mph

Current wind speed in mph

wind_1d_kph

[1d]: Forecasted wind speed in kph

wind_1d_mph

[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.

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.

Additional examples

Daily forecast

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

Daily Forecast

Weather overview

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

Weather overview

Note: While the platform is called “wunderground” the sensors will show up in Home Assistant as “PWS” (eg: sensor.pws_weather).

Note that the Weather Underground sensor is added to the entity_registry, so second and subsequent Personal Weather Station ID (pws_id) will have their monitored conditions suffixed with an index number e.g.

- sensor.pws_weather_1d_metric_2

Additional details about the API are available here.