The AirVisual Pro only comes with one PM2.5 sensor. Outdoor information displayed on the Pro's screen is retrieved via Wi-Fi from your nearest official monitoring station (government station or public outdoor Pro).
To see if your local community is covered by a nearby monitoring station, visit iqair.com/world-air-quality.If you do not have a nearby monitoring station, visit /air-quality-data/my-citys-data-is-unavailable-on-the-airvisual-map to learn how to get a station near you!
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Indoor/outdoor sensors in AirVisual Pro
Indoor/outdoor sensors in AirVisual Pro