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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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.
Altruist features for urban conditions
- Street-grade particle sensor — tough enough to hang outside yet still fine indoors. If you mount Altruist Urban outside your window it won’t “choke” after the first sand truck rumbles past.
- Outdoor noise measurement — Altruist is currently the only product in its class that adds a city-grade noise sensor, covering another important urban factor.
🤧🌿 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.
How Altruist helps allergy and asthma sufferers
- Room profiling for particulate matter and humidity: in the first week you will get 24-hour snapshots with highlighted insights—graphs that let you compare rooms instead of staring at bare numbers.
- Ventilation hints an Altruist on the balcony or even on a windowsill will warn you when outdoor air is bad so you can close the windows, turn on the purifier and postpone walks until traffic or a dust storm subsides.
- Children’s rooms place a unit there to spot dust problems early and reduce the risk of developing dust allergy.
🛠️🏠 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.
How Altruist is useful for a DIY smart-home engineer
- RGB lamp indicator — link any parameter to a smart bulb so your room quietly signals changes (no need to turn the whole living-room red just because Grandpa lights his pipe on the balcony).
- Air-purifier trigger — start a purifier inside whenever the outdoor unit detects smoke or dust.
- Air-conditioner control — react automatically to rising outdoor humidity or temperature at dawn.
🕵️♂️📈 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.
How Altruist helps independent monitoring
- Trusted hardware — open-source and field-tested by thousands of users, easy to recommend to neighbours.
- Your own map in one day — clone the GitHub repo, deploy on any domain and run a fully independent service that even the Altruist developers can’t interfere with.
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
| Model | Altruist Urban | Altruist Dual | AirVisual Pro & Outdoor | AirGradient Indoor & Outdoor | PurpleAir Zen | Netatmo Weather Station |
|---|---|---|---|---|---|---|
| Photo |  | |  |  |  |  |
| Price | €210 ($244) | €360 ($418) | €542 ($630) | €392 ($455) | €257 ($299) | €150 ($174) |
| Type | Single outdoor module | Dual-module, outdoor and indoor | Two separate modules | Two separate modules | Can be outdoor or indoor | Dual-module, outdoor and indoor |
| Particle Sensor | Yes | Yes | Yes | Yes | Yes | No |
| Urban Noise Sensor | Yes | Yes | No | No | No | Only indoor |
| Indoor CO2 | No | Yes | Yes | Yes | No | Yes |
| User Interface on Device | LED indication | LED indication on Urban + E-ink screen on Insight | LED indication on Outdoor and LCD screen on Pro | LED indication and small screen on Indoor | Only LED strip | Only LED strip |
| microSD Support | Yes | Yes | No | No | Yes | No |
| Power Connector | USB Type-C | USB Type-C | Micro USB on Pro & Ethernet PoE on Outdoor | USB Type-C | Micro USB | Micro USB |
| Housing | 3D printed, different colors and icons | 3D printed, different colors and icons | Only one color available | Only one color available | Only one color available | Only one color available |
| Water Protection | Fully sealed housing, air supply tube | Fully sealed housing, air supply tube | Fully sealed housing | Fully sealed housing | Unprotected open bottom of the sensor | Fully sealed housing |
| UV Protection | Protective shield made of ASA plastic | Protective shield made of ASA plastic | Yes | Housing is made of ASA plastic | Not specified | Not specified |
| Mandatory Cloud Connection | No | No | Yes | No | Yes | Yes |
| Local Device Management via IP | Full control over settings | Full control over settings | No, only in the app | No, but available via Home Assistant | Most functions are not available, settings only via corporate cloud | No, only in the app |
| Online Air Quality Map by Community | Yes, optional | Yes, optional | Yes, optional | Yes, optional | Yes, main entry point to view data | Yes, optional |
| Home Assistant Integration | Yes, only the HA addon is needed | Yes, only the HA addon is needed | Yes, but only for Pro | Yes, only the HA addon is needed | Yes, but limited API and cloud connection are required | Yes, only the HA addon is needed |
| Data Control and Ownership | The user owns the data and controls its distribution | The user owns the data and controls its distribution | Officially owned by users, but they must consent to the company's use of their data | The user owns the data and controls its distribution | The company owns the data, but users can view and export it with some limitations | Officially owned by users, but they must consent to the company's use of their data |
| Open Source and Hardware | Yes | Yes | No | Yes | No | No |
| Custom Firmware and DIY-mods | Yes | Yes | No | Yes | No | No |