Amazon Smart Air Quality Monitor review
Particulate readings in an Alexa household, at a price that regularly drops a long way below list.
By Tom Calder · Price last checked 20 Sep 2026, 12:29 BST · price-tracked
The only monitor here with a carbon monoxide sensor, which makes it the one most easily misread as a safety device. Amazon's own documentation states it is not certified as a CO alarm or detector and is not a substitute for one, and its stated CO accuracy of ±5 ppm or ±30% with a baseline offset under ±10 ppm means it may register nothing at the low, sustained levels a certified EN 50291 alarm exists to catch. As a cheap PM2.5 and VOC-trend sensor for an Alexa home it is fine; it measures no CO2 at all.
as of 20 Sep 2026, 12:29 BST · Details
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- Measures PM2.5, which most rivals near this price do not
- Alexa voice readouts and routines with no extra hub or bridge required
- Not certified as a CO alarm and not a substitute for one, per Amazon's own documentation — you still need a separate EN 50291 alarm
- No CO2 measurement at all, so it is no help whatsoever with ventilation
- Mains-only with no battery and no screen: it stops in a power cut and every reading lives in the Alexa app
Who shouldn't buy this
you are buying it for carbon monoxide protection — that job needs a dedicated alarm certified to EN 50291, which this does not replace.
Key specs
| Measures | PM2.5, VOCs (low/med/high), CO, humidity, temp. No CO2, no radon. |
| Display | No screen — one status LED; all readings live in the Alexa app |
| Connectivity | Wi-Fi and Bluetooth; Alexa app, Echo voice readouts and routines |
| Power | Mains USB only — no battery, so it stops in a power cut |
Our rating is a considered spec-and-evidence verdict: we verify every specification against at least two independent sources, re-check the UK price on a schedule where we can track it automatically, and say plainly who a product isn't for. Commissions never change a rating. Read the full methodology →
Alternatives to consider
as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.as of 20 Sep 2026, 12:29 BST · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.Want this cheaper?
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