Homebridge PurpleAir Plugin
A Homebridge plugin to connect PurpleAir sensors.
- Exposes humidity, temperature and VOC readings
- Supports updated US EPA PM2.5 AQI conversion
- Increased accuracy with Dual Laser readings
- Can report AQI instead of PM2.5 Density
- Detects sensor firmware and model
- Works with multiple and private sensors
This plugin only supports local sensors, if you want to use PurpleAir's paid API use Jacek Suliga's excellent Homebridge PurpleAir Sensor plugin.
Installation
Search for homebridge-purpleair in Homebridge UI, or install it via CLI:
$ sudo npm install -g --unsafe-perm homebridge-purpleairConfiguration
You may configure this plugin using Homebridge UI, or by editing your config.json:
{
"bridge": {},
"accessories": [],
"platforms": [
{
"platform": "PurpleAir",
"conversion": "US_EPA",
"aqiInsteadOfDensity": true,
"sensors": [
{ "ip": "192.168.0.42" },
{ "ip": "192.168.0.47", "name": "PurpleAir Garage" }
]
}
]
}| Option | Type | Default | Description |
|---|---|---|---|
conversion |
string |
US_EPA |
The data correction used to determine the air quality index (AQI). |
aqiInsteadOfDensity |
boolean |
false |
(Optional) HomeKit doesn't expose the air quality index (AQI). If enabled, the plugin will report the AQI in the "PM2.5 Density (µg/m³)" field. |
sensors |
array |
[] |
An array containing the PurpleAir sensors. |
sensors[].ip |
string |
The IP address of the sensor on the local network. | |
sensors[].name |
string |
(Optional) The name of the sensor. Useful to distinguish multiple sensors. |
Conversions
US EPA
Courtesy of the United States Environmental Protection Agency Office of Research and Development, correction equation from their US wide study (updated version from October 22 2021) as applied on the AirNow Fire and Smoke Map.
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