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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airalab/sensors.social v4.1.0

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sensors.social

Who Altruist Was Created For

Monitoring the environment involves plenty of pitfalls, making the job far harder than it looks at first glance. Our team—the creators of Altruist and the open-source project sensors.social—has spent seven years studying and working in this field, and we hope our experience will pleasantly surprise you and give you a practical tool for adapting to the conditions in which you and your loved ones live. Below we explain which main user groups Altruist is designed for…

🏙️ You live in a big city or an ecologically challenged region

Think of it as a little adventure: getting to know your city better. The top-priority reason to buy a home air-quality station is to gain solid knowledge of what is happening indoors and outside throughout the year so you can adapt accordingly.

There’s always something to worry about, but it’s best not to let the extremes—“nothing is happening” vs. “everything is definitely bad”—take root. After seven years working with citizen air-quality monitoring around the world, we can assure you that personal, quantitative monitoring shows the real situation right where you live. After a year with Altruist you will see, in clear graphs with insights from the developers, how air quality varies by time of day, season, the operation of waste-incineration plants, industrial sites, power stations, seasonal fires, dust storms… and you’ll form an objective view of what is happening right outside your window—and adapt to it.

🤧🌿 You or your loved ones have allergies or bronchial asthma

Some of Altruist’s developers suffer from house-dust allergy; one of us spent childhood in hospital every few weeks with asthma attacks. Life is harder for such people, so it is especially important to help them control indoor air quality.

🛠️🏠 You are building a smart home

Most of our team are engineers who automate their homes. We provide an official integration in Home Assistant Store so you can add Altruist to your local smart-home setup in two clicks, plus ready-made automation blueprints that need no coding.

🕵️‍♂️📈 You like to support community initiatives independent of governments and corporations

Become a data source and join other Altruists to build a citizen network monitoring environmental issues in your region. The developers have open-sourced the entire sensors.social backend so local communities can launch an independent sensor map.

The most fascinating lesson from seven years of experiments is the sheer diversity of motives, methods and analysis styles in environmental monitoring—from health concerns to activism, from outdated test tubes to high-end sampling stations, from smiley-faces to daily graphs. It all makes the task far more complex than it first appears, but we hope our team’s perspective embodied in Altruist and sensors.social will delight you and give you a useful tool for adapting to your environment.

Air Sensor Comparison Table

ModelAltruist UrbanAltruist DualAirVisual Pro & OutdoorAirGradient Indoor & OutdoorPurpleAir ZenNetatmo Weather Station
PhotoAltruist Urban deviceAltruist Dual deviceAirVisual Pro & Outdoor deviceAirGradient Indoor & Outdoor devicePurpleAir Zen deviceNetatmo Weather Station device
Price
Altruist UrbanAltruist Urban
€210 ($244)
Altruist DualAltruist Dual
€360 ($418)
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
€542 ($630)
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
€392 ($455)
PurpleAir ZenPurpleAir Zen
€257 ($299)
Netatmo Weather StationNetatmo Weather Station
€150 ($174)
Type
Altruist UrbanAltruist Urban
Single outdoor module
Altruist DualAltruist Dual
Dual-module, outdoor and indoor
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Two separate modules
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Two separate modules
PurpleAir ZenPurpleAir Zen
Can be outdoor or indoor
Netatmo Weather StationNetatmo Weather Station
Dual-module, outdoor and indoor
Particle Sensor
Altruist UrbanAltruist Urban
Yes
Altruist DualAltruist Dual
Yes
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Yes
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Yes
PurpleAir ZenPurpleAir Zen
Yes
Netatmo Weather StationNetatmo Weather Station
No
Urban Noise Sensor
Altruist UrbanAltruist Urban
Yes
Altruist DualAltruist Dual
Yes
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
No
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
No
PurpleAir ZenPurpleAir Zen
No
Netatmo Weather StationNetatmo Weather Station
Only indoor
Indoor CO2
Altruist UrbanAltruist Urban
No
Altruist DualAltruist Dual
Yes
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Yes
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Yes
PurpleAir ZenPurpleAir Zen
No
Netatmo Weather StationNetatmo Weather Station
Yes
User Interface on Device
Altruist UrbanAltruist Urban
LED indication
Altruist DualAltruist Dual
LED indication on Urban + E-ink screen on Insight
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
LED indication on Outdoor and LCD screen on Pro
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
LED indication and small screen on Indoor
PurpleAir ZenPurpleAir Zen
Only LED strip
Netatmo Weather StationNetatmo Weather Station
Only LED strip
microSD Support
Altruist UrbanAltruist Urban
Yes
Altruist DualAltruist Dual
Yes
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
No
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
No
PurpleAir ZenPurpleAir Zen
Yes
Netatmo Weather StationNetatmo Weather Station
No
Power Connector
Altruist UrbanAltruist Urban
USB Type-C
Altruist DualAltruist Dual
USB Type-C
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Micro USB on Pro & Ethernet PoE on Outdoor
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
USB Type-C
PurpleAir ZenPurpleAir Zen
Micro USB
Netatmo Weather StationNetatmo Weather Station
Micro USB
Housing
Altruist UrbanAltruist Urban
3D printed, different colors and icons
Altruist DualAltruist Dual
3D printed, different colors and icons
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Only one color available
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Only one color available
PurpleAir ZenPurpleAir Zen
Only one color available
Netatmo Weather StationNetatmo Weather Station
Only one color available
Water Protection
Altruist UrbanAltruist Urban
Fully sealed housing, air supply tube
Altruist DualAltruist Dual
Fully sealed housing, air supply tube
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Fully sealed housing
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Fully sealed housing
PurpleAir ZenPurpleAir Zen
Unprotected open bottom of the sensor
Netatmo Weather StationNetatmo Weather Station
Fully sealed housing
UV Protection
Altruist UrbanAltruist Urban
Protective shield made of ASA plastic
Altruist DualAltruist Dual
Protective shield made of ASA plastic
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Yes
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Housing is made of ASA plastic
PurpleAir ZenPurpleAir Zen
Not specified
Netatmo Weather StationNetatmo Weather Station
Not specified
Mandatory Cloud Connection
Altruist UrbanAltruist Urban
No
Altruist DualAltruist Dual
No
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Yes
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
No
PurpleAir ZenPurpleAir Zen
Yes
Netatmo Weather StationNetatmo Weather Station
Yes
Local Device Management via IP
Altruist UrbanAltruist Urban
Full control over settings
Altruist DualAltruist Dual
Full control over settings
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
No, only in the app
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
No, but available via Home Assistant
PurpleAir ZenPurpleAir Zen
Most functions are not available, settings only via corporate cloud
Netatmo Weather StationNetatmo Weather Station
No, only in the app
Online Air Quality Map by Community
Altruist UrbanAltruist Urban
Yes, optional
Altruist DualAltruist Dual
Yes, optional
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Yes, optional
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Yes, optional
PurpleAir ZenPurpleAir Zen
Yes, main entry point to view data
Netatmo Weather StationNetatmo Weather Station
Yes, optional
Home Assistant Integration
Altruist UrbanAltruist Urban
Yes, only the HA addon is needed
Altruist DualAltruist Dual
Yes, only the HA addon is needed
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Yes, but only for Pro
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Yes, only the HA addon is needed
PurpleAir ZenPurpleAir Zen
Yes, but limited API and cloud connection are required
Netatmo Weather StationNetatmo Weather Station
Yes, only the HA addon is needed
Data Control and Ownership
Altruist UrbanAltruist Urban
The user owns the data and controls its distribution
Altruist DualAltruist Dual
The user owns the data and controls its distribution
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
Officially owned by users, but they must consent to the company's use of their data
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
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
Netatmo Weather StationNetatmo Weather Station
Officially owned by users, but they must consent to the company's use of their data
Open Source and Hardware
Altruist UrbanAltruist Urban
Yes
Altruist DualAltruist Dual
Yes
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
No
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Yes
PurpleAir ZenPurpleAir Zen
No
Netatmo Weather StationNetatmo Weather Station
No
Custom Firmware and DIY-mods
Altruist UrbanAltruist Urban
Yes
Altruist DualAltruist Dual
Yes
AirVisual Pro & OutdoorAirVisual Pro & Outdoor
No
AirGradient Indoor & OutdoorAirGradient Indoor & Outdoor
Yes
PurpleAir ZenPurpleAir Zen
No
Netatmo Weather StationNetatmo Weather Station
No

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