A number on a screen, and what it does and does not tell you · review
Measures PM2.5, temperature and humidity with published tolerances, mains powered, with two years of exportable data.
Where this leaves you The only monitor on this shelf that publishes a PM2.5 tolerance — ±15 µg/m³ — and that figure is the most useful number here, because it tells you how little a reading of 10 means. It measures three things, needs mains power and keeps two years of data.
the PM2.5 accuracy is ±15 µg/m³.
Fifteen micrograms either way. At the levels a clean home sits at, that is a band wider than the reading itself.
This is not a criticism of this monitor in particular — it is the only one on the shelf that tells you. The other five publish no PM2.5 tolerance at all, and a cheap optical particle sensor is a cheap optical particle sensor whoever sells it.
Every other monitor here counts upwards: seven parameters, eight, nine, sixteen on the box. This one measures three and spends the rest of its listing on what it does with them — graphs, exports, and switching on a purifier when the air gets worse.
That is a different product in the same category, and the choice between them is not about the count.
Read on the day this page was built: $40 at the American Amazon shop.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
Prices quoted in this text were read on 2026-10-04. The live price is at the top of the page.
At $40, it is the 2 cheapest of the 7 models in this category published here.
| Measures | 3: PM2.5, temperature, humidity |
|---|---|
| PM2.5 accuracy | ±15 µg/m³ |
| Temperature accuracy | ±0.54 °F |
| Humidity accuracy | ±3% RH |
| Refresh | Every 2 seconds |
| Power | Mains only — no built-in battery; USB-C cable |
| Connectivity | Bluetooth or Wi-Fi; 2.4 GHz Wi-Fi required to display the time |
| Data | 13-day graphs online; export of the past 2 years, free |
| Automation | Triggers named GoveeLife purifiers, humidifiers and fans by model number |
| Indicator | LED showing 4 air quality levels |
| Amazon reference | B0BZV1XG6Y |
| EAN | 0810127731554 |
That a displayed PM2.5 of 10 could be anywhere from 0 to 25. That is a wide band at the levels most homes sit at, and it is worth knowing — but it is also the only PM2.5 tolerance published anywhere on this shelf. The other five monitors do not tell you, which is not the same as being better.
Three: PM2.5, temperature and humidity. This is a sensor built to drive other appliances rather than to survey the air. If you want CO2, formaldehyde or TVOC, every other monitor on this shelf claims them.
Yes, and it is the only one here that offers it: thirteen-day graphs online and two years of data to export, free. Every other monitor on this shelf shows the present reading and forgets it.
home comfort appliances from the same category, at nearby prices. Only what all of them publish is shown: a column with holes compares nothing.
| Model | Price | Measures |
|---|---|---|
| GoveeLife H5106101 | $40 | 3: PM2.5, temperature, humidity |
| zemeollo ZLJC2 | $30 | CO2, HCHO, TVOC, benzene, PM2.5, PM10 |
| AirWhisper 9AQI+7 AQI Buzzers+Time | $80 | PM1.0, PM2.5, PM10, CO2, TVOC, HCHO, temperature, humidity |
| sainlogic air | $105 | 9: CO2, PM2.5, PM10, PM1.0, AQI, HCHO, TVOC, temperature, humidity |
A room where a Govee purifier or humidifier should switch itself on, with the history kept
Details checked on October 4, 2026.
Amazon reports what buyers took in the month before this page was last checked: at least 800.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for home climate appliances and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
16-in-1, measures PM1.0 PM2.5 PM10 CO2 TVOC HCHO temperature humidity, 3 s refresh, no alarms, 12-month warranty
Measures PM1.0, PM2.5, PM10, CO2, TVOC, HCHO, temperature and humidity every three seconds, with no alarm functions.
Best for: Reading the air in a nursery or bedroom overnight, with lights dimmed and no alarm to wake anyone
≈ $80
16-in-1, measures PM1.0 PM2.5 PM10 CO2 TVOC HCHO temperature humidity, 1.5 s sampling, 4–5 h battery, 12-month support
Measures PM1.0, PM2.5, PM10, CO2, TVOC, HCHO, temperature and humidity, sampling every 1.5 seconds.
Best for: Someone who wants CO2 and particulates on one screen and will keep it plugged in
≈ $140
16-in-1, lists PM1.0 PM2.5 PM10 TVOC HCHO temperature humidity, 1.5 s sampling, 4–5 h battery, 12-month warranty
Lists PM1.0, PM2.5, PM10, TVOC, HCHO, temperature and humidity, sampling every 1.5 seconds.
Best for: Particulates and formaldehyde in a bedroom, if CO2 is not what you are after
≈ $140
