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home-assistant.io/source/_integrations/air_quality.markdown
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States: add unavailable and unknown (#34809) 
* States: add unavailable and unknown

* rephrase intro

* Make states lowercase

* Update source/_integrations/humidifier.markdown

Co-authored-by: Klaas Schoute <klaas_schoute@hotmail.com>

* Revert "Make states lowercase"

This reverts commit daf7f06630c4a2cc1f7e7fe5d043d9754a79cd1d.

* Apply bold to the UI string of state names

* Climate: fix grammar

---------

Co-authored-by: Klaas Schoute <klaas_schoute@hotmail.com>
2024-09-18 15:36:17 +02:00

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title description ha_release ha_domain ha_quality_scale ha_category ha_codeowners ha_integration_type
Air quality Instructions on how to add air quality sensors with Home Assistant 0.85 air_quality internal
@home-assistant/core
entity

The Air quality {% term integration %} allows other integrations to process information about air quality and pollution details. It is used by integrations that provide an air_quality sensor - you can find those under the health integrations.

The platforms cover the following levels (if they are available):

  • The particulate matter 0.1 (<= 0.1 μm) level.
  • The particulate matter 2.5 (<= 2.5 μm) level.
  • The particulate matter 10 (<= 10 μm) level.
  • The Air Quality Index (AQI).
  • The O3 (ozone) level.
  • The CO (carbon monoxide) level.
  • The CO2 (carbon dioxide) level.
  • The SO2 (sulphur dioxide) level.
  • The N2O (nitrogen oxide) level.
  • The NO (nitrogen monoxide) level.
  • The NO2 (nitrogen dioxide) level.

{% include integrations/building_block_integration.md %}

The state of an air quality entity

The state of an air quality entity represents the concentration of particles in the air that are 2.5 microns or fewer in diameter. The state is a number. The number is followed by the unit of measurement (micrograms per cubic meter: "µg/m³"). For example, PM2.5: 4 µg/m³. In this example, the state is 4.

In addition, the entity can have the following states:

  • Unavailable: The entity is currently unavailable.
  • Unknown: The state is not yet known.