Amazon Smart Air Quality Monitor
Buy this if you already live in an Alexa home and just want a sense of whether your air is clean, without spending much. The missing screen is the defining trade-off. You cannot glance at a wall display, so the numbers stay hidden until you open the app or ask an Echo. It works best as a trigger, kicking off a routine that switches on a purifier when PM2.5 climbs, and less well as an instrument you read off directly. Do not lean on its carbon monoxide reading for safety, because it is not a certified CO alarm. If you want CO2 or a display you can see across the room, spend more and look elsewhere.
Our editorial rating, not aggregated user reviews
As a cheap way to find out whether your air is a problem at all, this does the job. It tracks PM2.5, temperature and humidity closely enough for everyday awareness, and reviewers rate its particle readings as reasonable for the price. The catch is baked into the design. It has no screen, so every reading lives in the Alexa app or comes out of an Echo when you ask. That is what makes it so cheap, and it also ties the whole thing to Amazon. The VOC and carbon monoxide sensors report only a rough Low, Medium or High, so they are not a substitute for a proper alarm. There is no CO2 reading at all, which is a real gap on a device sold on air quality.
Pros
- Cheap way into air-quality monitoring, and a low bar to just find out whether you have a problem
- Tracks PM2.5 well enough for everyday awareness, and reviewers rate its particle readings as reasonable for the price
- Temperature and humidity readings are dependable for a device this cheap
- Slots straight into Alexa routines, so it can switch on a purifier or humidifier when the air changes
- Small and unobtrusive, with a simple colour light for an at-a-glance sense of the air
Cons
- No display on the device itself, so you need the Alexa app or an Echo to see any actual reading
- Does not measure CO2, which is one of the readings people most want indoors
- The VOC and carbon monoxide sensors report only Low, Medium or High, not real figures
- The carbon monoxide reading is indicative only and must never stand in for a certified CO alarm
- Tied entirely to Amazon's ecosystem, with no standalone use if you leave Alexa behind
- Sensor accuracy is fine for awareness but not for precision, so treat the numbers as a guide
Specifications
- Measures
- PM2.5, volatile organic compounds (VOC), carbon monoxide (CO), humidity, temperature
- Display
- None. A single multicolour light shows a rough status. Actual readings come from the Alexa app or an Echo
- Connectivity
- 2.4 GHz Wi-Fi, with Bluetooth used for setup
- Ecosystem
- Alexa only. Needs an Amazon account and the Alexa app, and an Echo to read values by voice
- Power
- Mains powered over USB with the included adapter
- Alerts
- Set thresholds in the Alexa app for PM2.5, VOC, CO, humidity and temperature
- Routines
- Can trigger Alexa routines on air-quality changes to control purifiers, humidifiers and other devices