Best Air Quality Monitors — SONOFF (2026)
1 air quality monitors matching brand “SONOFF”, hand-picked from UK Amazon listings.
Not sure which one to pick? Read our Best Air Quality Monitors UK (2026) guide.
The SONOFF Air Quality Monitor provides real-time indoor air quality data, helping you understand the environmental conditions within your home. Utilizing advanced sensors, it continuously measures particulate matter (PM2.5), temperature, and humidity, displaying this information clearly on a bright LED screen. This monitor connects to your Wi-Fi network allowing you to access the data via the SONOFF app or integrate with voice assistants like Alexa and Google Assistant for convenient control and monitoring.
The compact design of the Air Quality Monitor allows it to be discreetly placed in any room. It features a simple one-button operation, making it easy to set up and use without requiring technical expertise. The monitor’s data can be used to inform decisions about ventilation, air purification strategies, and overall home comfort.
This SONOFF device is compatible with existing SONOFF Zigbee devices and offers seamless integration within your smart home ecosystem. You can configure alerts based on specific air quality thresholds, ensuring you're notified of potential issues before they impact your health or wellbeing. Please note that Amazon’s standard returns policy applies to this product.
#1 Pick
SONOFF AirGuard CO2 Smart Indoor Air Quality Monitor, Matter Compatible, WiFi, Real-Time Display & Alarm£48.88
Pros
- Matter compatibility integrates with most smart home ecosystems
- Real-time alarm warns when CO2 levels get too high
- WiFi connectivity enables remote monitoring via app
Cons
- Best value comes when already using a Matter smart home setup
FAQ
What does the LED screen display?+
The LED screen displays the current PM2.5 level (µg/m³), temperature (°C), and humidity (%RH). It also indicates Wi-Fi connectivity status.
How do I connect the Air Quality Monitor to my Wi-Fi network?+
You’ll need to pair the device with the SONOFF app. The app guides you through the process, requiring you to enter your Wi-Fi credentials and ensuring the monitor is in pairing mode.
What type of batteries does it use?+
The Air Quality Monitor utilizes two AAA batteries (not included). These are easily accessible for replacement.
Can I integrate this with Alexa or Google Assistant?+
Yes, the SONOFF Air Quality Monitor is compatible with both Alexa and Google Assistant. You can link it to your voice assistants via the SONOFF app for voice control and information retrieval.
What units does the PM2.5 measurement use?+
The PM2.5 measurement uses micrograms per cubic meter (µg/m³), which is a standard unit of measure for particulate matter concentration.
Is the data accurate?+
The accuracy of the sensor is constantly monitored and calibrated. However, it’s important to remember that all sensors have a margin of error; consider this device as part of a wider approach to air quality assessment.
Do I need any other equipment to use this?+
You will require a 2.4GHz Wi-Fi network and the SONOFF app (available on iOS and Android) to fully utilise its features.
What is the range of temperature it measures?+
The Air Quality Monitor measures temperatures between -10°C and 50°C (-18°F and 122°F).
How do I reset the device if it's not responding?+
Press and hold the button on the back of the device for approximately 5 seconds until the LED screen flashes rapidly, indicating a reset has been performed.
What is Amazon’s returns policy for this product?+
Amazon’s standard returns policy applies to this SONOFF Air Quality Monitor. You have 30 days from receipt to return it for a full refund if you're not satisfied, provided it’s in its original packaging and unused.