Data from Amazon and official AirGradient and Airthings sites.
2026 verdict
If wildfire smoke or traffic dust is the worry, the Airthings View Pollution is the easier air quality monitor to recommend here, with the lower price, a five-year warranty and Alexa, Google Home and Home Assistant support.
It is a narrow device: PM2.5, temperature and humidity, nothing else. The AirGradient ONE is the far broader instrument, with PM0.3, PM1, PM2.5, PM10, CO2, TVOC and NOx on an OLED screen, but it works with Home Assistant only and carries one year of warranty. Pick the Airthings View Pollution for a particulate check you can read from your phone or ask a speaker about, and the AirGradient ONE if CO2 and VOC data matter and Home Assistant is your smart home.
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| Feature | AirGradient ONE | Airthings View Pollution | Winner |
|---|---|---|---|
| Price | $230.00 | €149.00 | Airthings View Pollution |
| Warranty | 1 year | 5 years | Airthings View Pollution |
| Connectivity | 2.4 GHz WiFi, Bluetooth | 2.4 GHz WiFi, Bluetooth, Other | Airthings View Pollution |
| Integrations | Home Assistant | Google Home, Alexa, Home Assistant | Airthings View Pollution |
| Sensors | TVOC, PM0.3, PM1, PM2.5, PM10, CO2, NOx, Temperature, Humidity | PM2.5, Temperature, Humidity | AirGradient ONE |
| Alerts | Temperature Alerts, Humidity Alerts, Air Quality Alerts | Temperature Alerts, Humidity Alerts, Air Quality Alerts, Low Battery Alerts | Airthings View Pollution |
| Weather Resistance | NO | NO | Tie |
| Screen | YES | YES | Tie |
What the differences mean
What each one measures
The Airthings View Pollution reads PM2.5, temperature and humidity. The AirGradient ONE adds PM0.3, PM1, PM10, CO2, TVOC and NOx, which is the difference between knowing the smoke level and knowing whether a closed room is getting stuffy.
Ecosystem support
Both work with Home Assistant. Only the Airthings View Pollution also works with Alexa and Google Home, so it is the one you can ask a speaker about, and neither supports Apple Home or Matter.
Power and placement
The AirGradient ONE needs USB-C power. The Airthings View Pollution runs for about 2 years on 6x AA batteries or on USB-C, which suits room-by-room testing.
Alerts
Both send temperature, humidity and air quality alerts. The Airthings View Pollution also sends low battery alerts, which matters because it runs on AA cells.
Warranty
The Airthings View Pollution carries 5 years of warranty, the AirGradient ONE 1 year.
Which one to buy if
- you want to check smoke or dust and decide when to run a purifier
The Airthings View Pollution tracks PM2.5 with cloud alerts and history, which is exactly that job, at the lower price.
- you need CO2 to know when to open a window
The AirGradient ONE measures CO2, TVOC and NOx, and the Airthings View Pollution does not.
- you use Alexa or Google Home to ask about your home
The Airthings View Pollution supports both, while the AirGradient ONE is Home Assistant only.
- your smart home runs on Home Assistant and you want detailed data to graph
The AirGradient ONE feeds seven air quality readings plus temperature and humidity into Home Assistant.
- + Sensors: TVOC, PM0.3, PM1, PM2.5, PM10, CO2, NOx, Temperature, Humidity
- - Price: $230.00 vs €149.00
- - Warranty: 1 year vs 5 years
Winner
- + Price: €149.00
- + Warranty: 5 years
- + Connectivity: 2.4 GHz WiFi, Bluetooth, Other
- - Sensors: PM2.5, Temperature, Humidity vs TVOC, PM0.3, PM1, PM2.5, PM10, CO2, NOx, Temperature, Humidity
What owners say
Airthings View Pollution owners buy it to stop guessing about particulates: people in wildfire areas and asthma households use it to decide when to run a purifier and to check that filters still do their job, and several cross-checked its PM2.5 against community outdoor data and other monitors with matching results. They like the Wi-Fi alerts, the clean app with history graphs, the wave-to-check indicator and the choice of AA batteries or USB-C. Their reservations are value for a single-pollutant device, setup that can take repeated attempts (region errors, Bluetooth that would not pair, a hub slow to join Wi-Fi), batteries that arrive drained and an unlit E-Ink screen that is hard to read from across the room.
Frequently Asked Questions
Which is better overall: AirGradient ONE or Airthings View Pollution?
The Airthings View Pollution wins the comparison on price, warranty, connectivity, integrations and alerts. The AirGradient ONE wins on sensors, since it measures far more than PM2.5. Choose by whether you need that breadth.
What is the difference between the AirGradient ONE and the Airthings View Pollution?
The AirGradient ONE is a multi-sensor monitor with PM0.3, PM1, PM2.5, PM10, CO2, TVOC and NOx. The Airthings View Pollution measures PM2.5, temperature and humidity only, but adds Alexa and Google Home support, battery power and a longer warranty.
Does the Airthings View Pollution measure CO2 like the AirGradient ONE?
No. Only the AirGradient ONE measures CO2, TVOC and NOx. The Airthings View Pollution is limited to PM2.5, temperature and humidity, so it cannot tell you when a room needs ventilating for CO2.
Do the AirGradient ONE and the Airthings View Pollution work with Apple Home?
Neither does. Both work with Home Assistant, and the Airthings View Pollution also works with Alexa and Google Home, but neither supports Apple Home, SmartThings or Matter.
Who should buy the AirGradient ONE?
Home Assistant users who want a wide sensor suite with CO2, TVOC, NOx and several particle sizes on an OLED screen, and who are fine with wired power.
Who should buy the Airthings View Pollution?
Households dealing with wildfire smoke, city pollution or asthma who mainly want PM2.5, plus voice assistant support, battery power and a five-year warranty.
Full comparison table
Compare all 32 Air Quality Monitors side by side
You are looking at two of them. The full table lines up all Air Quality Monitors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
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