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Head-to-head · Best Air Quality Monitors

AirGradient One vs Temtop M10+ Real-Time Air Quality Monitor

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Temtop M10+ Real-Time Air Quality Monitor comes out ahead by a clear margin (3.8 vs 4.3). The gap is mostly about users seeking straightforward portability — read the strengths below before deciding.

AirGradient One
Ranked #5 in Best Air Quality Monitors
AirGradient One
2 sourcesall derived$230as of Aug 3

The AirGradient One measures carbon dioxide, PM2.5, VOCs and NOx on an open-source board, sold assembled for $230 or as a $138 kit. It uses better-specified sensors than most consumer monitors at the price, exposes every reading to Home Assistant and ESPHome, and keeps the data yours. What it asks in return is a tolerance for setup work: a browser-based Wi-Fi handoff, Torx screws that strip, and no radon sensor at all.

Strengths
  • — Easy to assemble and configure with user-friendly instructions
  • — Integrates seamlessly with Home Assistant for full control and automation
  • — Provides accurate readings for CO₂, PM₂.₅, VOCs, and NOₓ sensors
Watch-outs
  • — Initial WiFi hotspot setup can be problematic for some users
  • — Lacks radon sensor compared to competitors like Airthings View Plus
$230 · Buy at airgradient.comFull review →
Temtop M10+ Real-Time Air Quality Monitor
Higher ratedRanked #2 in Best Air Quality Monitors
Temtop M10+ Real-Time Air Quality Monitor
2 sources$101.99as of Aug 1

The Temtop M10 is a compact air quality monitor with dual sensors that read PM2.5, HCHO, and TVOC levels to an accuracy deviation of ±14.96%. Reviewers praised its portability and battery life; the smart app connectivity was another story. It runs on batteries or wall power and displays real-time data including AQI. Performance is solid, but the app integration issues will put some buyers off. It fits anyone who wants a straightforward, portable air quality measurement without leaning on a smartphone.

Strengths
  • — Uses two built-in sensors for accurate air quality measurement
  • — Displays four different readings: PM2.5, TVOC, AQI, and HCHO
  • — Compact and portable design with battery operation
Watch-outs
  • — Smart app integration is buggy and difficult to set up
  • — Inconsistent user manual and setup experience
$101.99 · Check Price on AmazonFull review →

Derived means the reviewer published no score, so one was inferred from their written verdict. Everything else is a number the publisher printed. How we rank.

How they stack up

AirGradient One

The AirGradient One excels in ease of setup and Home Assistant integration, making it more user-friendly than the Airthings models, which use lower-tier sensors and lack radon detection. While it doesn't match the Qingping Gen 2's sensor accuracy, it provides a more affordable option with good performance across CO₂, PM₂.₅, VOCs, and NOₓ sensors, making it a strong alternative to the more expensive Airthings devices.

Temtop M10+ Real-Time Air Quality Monitor

The Temtop M10 offers solid PM2.5 accuracy with ±14.96% deviation, but its app integration is problematic compared to the more reliable AirGradient One, which provides seamless Home Assistant integration. While it's portable and battery-powered, the inconsistent setup experience makes it less user-friendly than the Awair Element, which offers intuitive Wi-Fi connectivity and a better overall user experience.

Specs side-by-side

SpecAirGradient OneTemtop M10+ Real-Time Air Quality Monitor
SensorsCO₂, PM₂.₅, VOCs, NOₓLaser PM sensor, Electrochemical HCHO sensor
ConnectivityWiFi 2.4GHz, Bluetooth LE, Bluetooth 5, Bluetooth mesh—
Power SourceUSB 5V 2ABattery (up to 6 hours) + DC 5V
DisplayOLEDTFT Color Screen
Dimensions5.12 x 5.12 x 1.38 in3.23 x 3.23 x 1.22 in
Weight0.77 lb0.44 lb
AppAirGradient Dashboard, Home Assistant, Homey—
MeasurementsPM2.5, CO2, TVOCs, NOx, Temperature, HumidityPM2.5, HCHO, TVOC, AQI
← See the full ranking of best air quality monitors