Create airthings.markdown (#19446)

source/_integrations/airthings.markdown

@@ -0,0 +1,24 @@
+---
+title: Airthings
+description: Instructions on how to integrate Airthings into Home Assistant.
+ha_category:
+  - Sensor
+  - Environment
+ha_release: 2021.10
+ha_iot_class: Cloud Polling
+ha_codeowners:
+  - '@danielhiversen'
+ha_domain: airthings
+ha_config_flow: true
+ha_platforms:
+  - sensor
+---
+
+Integrates Airthings sensors into Home Assistant.
+
+[Airthings](https://www.airthings.com/) provide different sensors for meassuring the air quality. The focus specially on Radon sensors.
+
+
+Login [here](https://dashboard.airthings.com/integrations/api-integration) to find your credentials
+
+{% include integrations/config_flow.md %}