Illuminance Sensor

Estimates outdoor illuminance based on current weather conditions and time of day. At night the value is 10. From a little before sunrise to a little after the value is ramped up to whatever the current conditions indicate. The same happens around sunset, except the value is ramped down. Below is an example of what that might look like over a three day period.

The following sources of weather data are supported:

Dark Sky Sensor (icon)
Dark Sky Weather
Weather Underground
YR (symbol) NOTE: Removed in HA 0.115
Meteorologisk institutt (Met.no)
AccuWeather
ecobee
OpenWeatherMap

Follow the installation instructions below. Then add the desired configuration. Here is an example of a typical configuration:

sensor:
  - platform: illuminance
    entity_id: weather.home

Installation

Place a copy of:

__init__.py at <config>/custom_components/illuminance/__init__.py
sensor.py at <config>/custom_components/illuminance/sensor.py
manifest.json at <config>/custom_components/illuminance/manifest.json

where <config> is your Home Assistant configuration directory.

NOTE: Do not download the file by using the link above directly. Rather, click on it, then on the page that comes up use the Raw button.

Configuration variables

api_key: Weather Underground API key. Required when using WU.
entity_id: Entity ID of entity that indicates current weather conditions. See examples below. Required when not using WU.
name (Optional): Name of the sensor. Default is Illuminance.
scan_interval (Optional): Polling interval. For non-WU configs only applies during ramp up period around sunrise and ramp down period around sunset. Minimum is 5 minutes. Default is 5 minutes.
query: Weather Underground query. See https://www.wunderground.com/weather/api/d/docs?d=data/index. Required when using WU.

Examples

Dark Sky Sensor

sensor:
  - platform: darksky
    api_key: !secret ds_api_key
    monitored_conditions:
      - icon
  - platform: illuminance
    name: DSS Illuminance
    entity_id: sensor.dark_sky_icon

Dark Sky Weather

weather:
  - platform: darksky
    api_key: !secret ds_api_key
sensor:
  - platform: illuminance
    name: DSW Illuminance
    entity_id: weather.dark_sky

Met.no, AccuWeather or ecobee

sensor:
  - platform: illuminance
    name: Estimated Illuminance
    entity_id: weather.home

OpenWeatherMap

sensor:
  - platform: illuminance
    name: Estimated Illuminance
    entity_id: weather.openweathermap

YR Sensor

sensor:
  - platform: yr
    monitored_conditions:
      - symbol
  - platform: illuminance
    name: YRS Illuminance
    entity_id: sensor.yr_symbol

Weather Underground

sensor:
  - platform: illuminance
    name: WU Illuminance
    api_key: !secret wu_api_key
    query: !secret wu_query
    scan_interval:
      minutes: 30

Releases Before 2.1.0

See https://github.com/pnbruckner/homeassistant-config/blob/master/docs/illuminance.md.

SimonSelg/ha-illuminance