Knowing what's in the air you breathe is important - and building an environmental monitor is a way to visualize the invisible properties of the air you inhale.

This guide covers building a small, internet-enabled environmental monitor which can track a range of data such from temperature to UV-level to the amount of total-volatile-organic-compounds present in the air.

Build it, place it in a location you'd like to log, and then monitor it from anywhere in the world using our Internet-of-Things platform - Adafruit IO.

This project can be done with either Arduino or CircuitPython, too!


We'll need a Feather HUZZAH and a handful of sensors to build our own environmental monitor.

Feather is the new development board from Adafruit, and like its namesake, it is thin, light, and lets you fly! We designed Feather to be a new standard for portable microcontroller...
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Bosch has stepped up their game with their new BME280 sensor, an environmental sensor with temperature, barometric pressure and humidity! This sensor is great for all sorts...
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Breathe easy with the SGP30 Multi-Pixel Gas Sensor, a fully integrated MOX gas sensor. This is a very fine air quality sensor from the sensor experts...
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This little sensor is a great way to add UV light sensing to any microcontroller project. The VEML6070 from Vishay has a true UV A light sensor and an I2C-controlled ADC that will take...
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A Feather board without ambition is a Feather board without FeatherWings!This is the FeatherWing Proto - a prototyping add-on for all Feather boards. Using our...
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Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This...
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Monitor Enclosure

If you'd like to enclosure your environmental monitor, consider picking up the following parts:

Store your project safe and sound in this nice weatherproof box with a clear top. We picked up this box because we like the machinable ABS plastic body and tough clear polycarbonate...
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1 x Cable Gland
Cable Gland PG-7 size - 0.118" to 0.169" Cable Diameter
4 x Stranded-Core Wire
Silicone Cover Stranded-Core Wire - 2m 26AWG

This guide was first published on Aug 16, 2018. It was last updated on Aug 16, 2018.

This page (Overview) was last updated on Nov 27, 2021.

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