US EPA AQI (PM2.5)
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Particle size distribution
counts per deciliter · channels A and BMass concentration
µg/m³ · ATMEnvironment
inside sensor housingPurpleAir reports temperature and humidity inside the housing. Ambient estimates apply the vendor correction (−8°F, +4% RH).
Visibility & scattering
derived optical fieldsMisc sensors
VOC · ozone · analogDual-channel diagnostics
A vs B · confidence & flagsDevice health
connectivity & firmwareLocation
lat · lon · altitudeRaw response
every field returned by the APIShow full JSON
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