Add integration here_weather

source/_integrations/here_weather.markdown

@@ -0,0 +1,40 @@
+---
+title: "HERE Destination Weather"
+description: "Instructions on how to add HERE Destination Weather to Home Assistant."
+ha_category:
+  - Weather
+  - Sensor
+ha_iot_class: Cloud Polling
+ha_release: '0.103'
+ha_config_flow: true
+ha_quality_scale: gold
+ha_codeowners:
+  - '@eifinger'
+ha_platforms:
+  - sensor
+  - weather
+---
+
+The `here_weather` integration provides weather information from the [HERE Destination Weather API](https://developer.here.com/documentation/destination-weather/dev_guide/topics/overview.html).
+
+## Setup
+
+You need to register for an API key (REST & XYZ HUB API/CLI) by following the instructions [here](https://developer.here.com/tutorials/getting-here-credentials/).
+
+HERE offers a Freemium Plan which includes 250,000 free Transactions per month. For the Destination Weather API, one transaction equals one request.
+
+By default HERE will deactivate your account if you exceed the free Transaction limit for the month. You can add payment details to reenable your account as described [here](https://knowledge.here.com/csm_kb?id=public_kb_csm_details&number=KB0016434).
+
+{% include integrations/config_flow.md %}
+
+## Additional entities
+
+The integration provides the following four modes:
+
+* **Astronomy**: Sunrise, Sunset and Moonphase
+* **Hourly**: Weather forecast in an hourly format
+* **Daily**: Weather forecast in a dailyformat
+* **Daily Simple**: Like Daily but with high/low temp, UV-index and pressure
+* **Observation**: Detailed precipitation for the next 24h
+
+All sensors and all weather entities but the Daily Simple are disabled by default. You can enable them manually if needed.