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AIR-1 Air Quality For Home Assistant

AIR-1 Air Quality For Home Assistant

12 total reviews

Regular price $88.99
Regular price Sale price $88.99
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MiCS-4514 Gas

The Apollo AIR-1 is the most compact, feature-rich, affordable, and expandable air sensor for Home Assistant.  Utilizing wifi and ESPHome it is locally controlled with no subscription or cloud required. 

Powered via USB-C and a standard wall plug. 

We proudly offer the software and CAD drawings to the community, encouraging all to modify and improve upon them. For more information, visit our GitHub or wiki. We're eager to see the innovative adaptations you come up with. Join our Discord community to share your unique remakes, or to engage in discussions about future products. 

The AIR-1 measures only 61mm x 61mm x 30mm and has an aesthetic design to blend in.  

So what does the AIR-1 do?

Bluetooth Tracker(ESP32-C3-Mini) - YAML Config Required

Track Bluetooth devices in your house, letting you know which devices are closest to the sensor. You will need to know the MAC of the Bluetooth devices you want to track.

  • Find your phone if you left it in the office or the bedroom.
  • Know who just walked into the room.
  • Track a beacon attached to your dog's collar.

PM1, PM2.5, PM4, PM10, VOC, NOx, Temperature, Humidity (SEN55)

**There is a temperature offset needed due to heat buildup from the ESP32-C3. We are still evaluating it but it is between 2 and 6 degrees C.

Many air quality measurements from a very reputable manufacturer. The sensor has a 10-year lifespan at continuous use (Most PM sensors only have 3 years) meaning you can have very short update intervals

  • Monitor 3d printers
  • Turn your air purifier on when air quality becomes unhealthy
  • Detect new paint fumes

CO (Carbon Monoxide), C2H5OH (Ethanol), H2, NO2, NH3 (Ammonia), CH4 (Methane) (MiCS-4514 From DFRobot) - Optional

** Our beta test group has noticed the methane reading will spike when exposed to high amounts of other gasses. We all believe this is manageable for the vast amount of automations still but wanted to let you know. It is much more a exists/doesn't exist type of gas monitoring vs the actual PPM readout, it will read 0ppm in normal air.

(This device does not meet the requirements for gas safety monitoring per the NBIC, NFPA, or IFC)

Monitor the individual gas percentages in your air with this optional add-on.
MiCS-4514 datasheet

DFRobot product


CO2 (SCD40) - Optional

This optional add-on brings a CO2 sensor to the package, which comes pre-calibrated and ready to use. (This device does not meet the requirements for CO2 safety monitoring per the NBIC, NFPA, or IFC)

  • Get alerts to open a window or automate your HVAC fan to run when CO2 levels are high.

Barometric Pressure (DPS310)

This pressure sensor feeds into the SCD40 (CO2) for more accurate readings

RGB Pixels

Uses color-coded alerts for various home scenarios.

  • Flash red if the air quality is unhealthy.
  • Flash green on trash night.
  • Flash blue when it's treat time for your pup.

Power And Sensor Expansion Connector 

A connector that'll allow future sensors and power methods. A few expansion boards are in development currently but no set release date. Let us know what you'd like to see on the expansion slots.

What's in the box?

  • 1 x Apollo AIR-1 (Assembled board, and case)
  • Links to our documentation, open-source code, and CAD models
  • Sticker of Apollo 

 Extras Always available:

  • Access to our discord for support, product announcements, and home automation ideas.  Link
  • Access to our code and CAD files for you to remix or browse community remixes. Link

 Community Support: 

  • We hope to build a community on our discord and continue delivering products the community wants. Our team will be there to help answer any questions, suggestions, or problems you might have. Join us here: link
  • Wiki for documentation:
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Customer Reviews

Based on 12 reviews
David Stein

AIR-1 Air Quality For Home Assistant

Easy to use, ton of sensors in a compact package

Ordered 2 together with a friend to save on shipping to the Netherlands. They arrived in a week or so.

I had no prior experience with EspHome, but when it arrived I had it running in minutes. Connect to built-in hotspot to setup the wifi, after that it was automatically detected in Home Assistant.

Sensor outputs seem very accurate, in particular CO2 and particulates. The temperature sensor is a bit less useful as it is affected by internal heat generation (which the documentation is honest about). You can calibrate it, but if you move the sensor then the airflow is affected and you need to calibrate it again. Also after a firmware update the naming of the particulate sensors magically changed which was a minor inconvenience.

Bradley Brooks
Accuracy Poor

The temperature readings are lower than actual temperature by 20 degrees. I want to return this because of inaccurate readings.


The AIR-1 ships with a temperature offset of around 5-6 degrees Celsius due to the heat generated by the ESP chip. This is likely the cause of your low temperature readings. The offset can be adjusted under the device settings in Home Assistant. You will want to reduce the offset until the temperature matches your environment. You can follow our wiki article here:

Please let us know if this helps and if you have any further questions.

Apollo Automation

Pat Murphy
Feature Packed Sensor!

I love all the data I'm able to view with this sensor. I have statistics graphs and gauges dashboard setup in home assistant. It is interesting to see how the particulate matter graphs shoot up ever evening when using the oven for dinner. I think it might be time to give the oven a good cleaning getting the burnt stuff at the bottom off probably causing that.

Brian Uppstrom
Simple integration with Home Assistant.

I’ve never had an easier time integrating a device onto my WiFi and then home assistant. Seriously it took like 1 minute and I was up.