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AirGradient ONE

AirGradient / I-9PSL

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Does the AirGradient ONE work with HomeKit, Alexa, and Google Home?

The AirGradient ONE is an open-source indoor monitor for PM2.5, CO2, TVOC, NOx, temperature and humidity that connects over Wi-Fi and is auto-discovered by Home Assistant. It suits Home Assistant users through an integration (local Wi-Fi control).

At a glance: works withHow this is decided: cited platform facts only
HomeKit
Unknown
Unknown
Google Home
Unknown
Unknown
Alexa
Unknown
Unknown
SmartThings
Unknown
Unknown
Home Assistant
Yes[1][2]
Wi-Fi local, via airgradient

Key facts

AirGradient ONE facts

How facts are sourced: every cell cites its source below
FactValue
StatusCurrent[3][4]
List price$230[3] as of
TypeIndoor air quality monitor[3]
MeasuresPM2.5, CO2, TVOC, NOx, temperature, humidity[3]
ConnectionWi-Fi (2.4 GHz), Bluetooth LE[3]
PowerUSB-C, 5 V; power plug not included[3]
Releasedunknown
Model numberI-9PSL[3]
Display1.3 inch OLED and 11 RGB LEDs[3]
Dimensions130 x 130 x 35 mm[3]
Weight350 g[3]
VariantsFully assembled ($230), kit ($138, no warranty or certification) and a cellular model I-9PSL-CE[3]
Warranty12 months on the fully assembled monitor[3]
ESPHomeNeeds flashing[5][6]

Integration paths

How the AirGradient ONE connects

1 pathHow facts are sourced: every cell cites its source below
PathRequiresiLocaliFeatures lostPlatformsi
Wi-Fi local2.4 GHz Wi-Fi network[3]Yes[1][2]unknown
About these columns
Requires
Hardware the path needs beyond the device and a controller.
Local
Yes when control on this path keeps working with the internet down.
Platforms
The platforms that work with the device on this path: Native (out of the box), Via integration (needs an add-on) or Not supported.

Home Assistant and Homey

Ways to add the AirGradient ONE

3 routesHow facts are sourced: every cell cites its source below
PlatformLeveliIntegrationDetailsEvidenceLimitations
Home AssistantNative (local)[1][8]airgradientWi-Fi local
  • Quality: Platinum[1][8]
  • IoT class: Local Polling[1][8]
  • Works with Home Assistant: Certified[1][8]
Model namedLimited: Devices on the legacy local API need firmware 3.1.1 or later to be set up or discovered[1][8]
HomeyOfficial app (local)[9]com.airgradientWi-Fi local
  • App: Official[9]
  • Runs on: Homey Pro[9]
Product line namedNone stated
HomeyOfficial app (cloud)[9]com.airgradientWi-Fi local
  • App: Official[9]
  • Runs on: Homey Cloud[9]
Product line namedNone stated
About these columns
Level
How the device gets into the platform on this route. The headline is the best route: local before cloud, direct before bridged, core before community. The methodology page lists every level.

Cite this page

AirGradient ONE. Smart Home Canon. https://smarthomecanon.com/devices/airgradient-one. Last checked 2026-10-20.

Sources

  1. [1]
    DOChome-assistant.io / AirGradient - Home Assistant
    Accessed Back to text
  2. [2]
    MFRairgradient.com / AirGradient with Home Assistant
    Accessed Back to text
  3. [3]
    MFRairgradient.com / AirGradient ONE indoor monitor
    Accessed Back to text
  4. [4]
    MFRstore72735574.company.site / AirGradient store: ONE I-9PSL fully assembled
    Accessed Back to text
  5. [5]
    DBdevices.esphome.io / AirGradient-One - ESPHome Devices
    Accessed Back to text
  6. [6]
    MFRairgradient.com / AirGradient integrations
    Accessed Back to text
  7. [7]
    MFRairgradient.com / AirGradient with Homey
    Accessed Back to text
  8. [8]
    DOCworks-with.home-assistant.io / Works with Home Assistant: certified products
    Accessed Back to text
  9. [9]
    DOChomey.app / Homey App Store: AirGradient
    Accessed Back to text