Map of independent air quality sensors

Web3 public sensors map

Welcome to the decentralized opensource sensors map which operates with the sole intent of serving the free will of individuals , without any beneficiaries. It offers two distinct layers of decentralization at your choise: peer-to-peer connectivity for direct access to sensor data, and the federative concept for accumulating sensor data and displaying measurement history. Click here for further technical details.

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Air Sensor Comparison Table

ModelAltruist Urban & InsightPurpleAir ZenAirGradient Indoor & OutdoorNetatmo Weather StationAirVisual Pro & Outdoor
PhotoAltruist Urban & Insight devicePurpleAir Zen deviceAirGradient Indoor & Outdoor deviceNetatmo Weather Station deviceAirVisual Pro & Outdoor device
Price
Altruist Urban & InsightAltruist Urban & Insight
€189 ($221)
PurpleAir ZenPurpleAir Zen
€254 ($299)
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
€328 ($385)
Netatmo Weather StationNetatmo Weather Station
€152 ($179)
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
€638 ($748)
Type
Altruist Urban & InsightAltruist Urban & Insight
Dual-module, outdoor and indoor
PurpleAir ZenPurpleAir Zen
Can be outdoor or indoor
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Two separate modules
Netatmo Weather StationNetatmo Weather Station
Dual-module, outdoor and indoor
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Two separate modules
Particle Sensor
Altruist Urban & InsightAltruist Urban & Insight
Yes
PurpleAir ZenPurpleAir Zen
Yes
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Yes
Netatmo Weather StationNetatmo Weather Station
No
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Yes
Urban Noise Sensor
Altruist Urban & InsightAltruist Urban & Insight
Yes
PurpleAir ZenPurpleAir Zen
No
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
No
Netatmo Weather StationNetatmo Weather Station
Only indoor
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
No
Indoor CO2
Altruist Urban & InsightAltruist Urban & Insight
Yes
PurpleAir ZenPurpleAir Zen
No
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Yes
Netatmo Weather StationNetatmo Weather Station
Yes
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Yes
User Interface on Device
Altruist Urban & InsightAltruist Urban & Insight
LED indication on Urban + E-ink screen on Insight
PurpleAir ZenPurpleAir Zen
Only LED strip
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
LED indication and small screen on Indoor
Netatmo Weather StationNetatmo Weather Station
Only LED strip
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
LED indication on Outdoor and LCD screen on Pro
microSD Support
Altruist Urban & InsightAltruist Urban & Insight
Yes
PurpleAir ZenPurpleAir Zen
Yes
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
No
Netatmo Weather StationNetatmo Weather Station
No
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
No
Power Connector
Altruist Urban & InsightAltruist Urban & Insight
USB Type-C
PurpleAir ZenPurpleAir Zen
Micro USB
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
USB Type-C
Netatmo Weather StationNetatmo Weather Station
Micro USB
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Micro USB on Pro & Ethernet PoE on Outdoor
Housing
Altruist Urban & InsightAltruist Urban & Insight
3D printed, different colors and icons
PurpleAir ZenPurpleAir Zen
Only one color available
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Only one color available
Netatmo Weather StationNetatmo Weather Station
Only one color available
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Only one color available
Water Protection
Altruist Urban & InsightAltruist Urban & Insight
Fully sealed housing, air supply tube
PurpleAir ZenPurpleAir Zen
Unprotected open bottom of the sensor
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Fully sealed housing
Netatmo Weather StationNetatmo Weather Station
Fully sealed housing
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Fully sealed housing
UV Protection
Altruist Urban & InsightAltruist Urban & Insight
Protective shield made of ASA plastic
PurpleAir ZenPurpleAir Zen
Not specified
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Housing is made of ASA plastic
Netatmo Weather StationNetatmo Weather Station
Not specified
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Yes
Mandatory Cloud Connection
Altruist Urban & InsightAltruist Urban & Insight
No
PurpleAir ZenPurpleAir Zen
Yes
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
No
Netatmo Weather StationNetatmo Weather Station
Yes
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Yes
Local Device Management via IP
Altruist Urban & InsightAltruist Urban & Insight
Full control over settings
PurpleAir ZenPurpleAir Zen
Most functions are not available, settings only via corporate cloud
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
No, but available via Home Assistant
Netatmo Weather StationNetatmo Weather Station
No, only in the app
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
No, only in the app
Online Air Quality Map by Community
Altruist Urban & InsightAltruist Urban & Insight
Yes, optional
PurpleAir ZenPurpleAir Zen
Yes, main entry point to view data
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Yes, optional
Netatmo Weather StationNetatmo Weather Station
Yes, optional
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Yes, optional
Home Assistant Integration
Altruist Urban & InsightAltruist Urban & Insight
Yes, only the HA addon is needed
PurpleAir ZenPurpleAir Zen
Yes, but limited API and cloud connection are required
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Yes, only the HA addon is needed
Netatmo Weather StationNetatmo Weather Station
Yes, only the HA addon is needed
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Yes, but only for Pro
Data Control and Ownership
Altruist Urban & InsightAltruist Urban & Insight
The user owns the data and controls its distribution
PurpleAir ZenPurpleAir Zen
The company owns the data, but users can view and export it with some limitations
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
The user owns the data and controls its distribution
Netatmo Weather StationNetatmo Weather Station
Officially owned by users, but they must consent to the company's use of their data
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Officially owned by users, but they must consent to the company's use of their data
Open Source and Hardware
Altruist Urban & InsightAltruist Urban & Insight
Yes
PurpleAir ZenPurpleAir Zen
No
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Yes
Netatmo Weather StationNetatmo Weather Station
No
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
No
Custom Firmware and DIY-mods
Altruist Urban & InsightAltruist Urban & Insight
Yes
PurpleAir ZenPurpleAir Zen
No
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Yes
Netatmo Weather StationNetatmo Weather Station
No
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
No