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Airthings

Airthings View Radon

Wi-Fi radon monitor with an e-paper display

  • Monitor
  • Battery
  • Screen and app
  • Wi-Fi and Bluetooth
C-NRPP 2024/25 evaluation: ApprovedSee the evidence

Best for, and skip if

Best for you if

  • You want readings and alerts on your phone from anywhere, over Wi-Fi.
  • You want a screen you can read at a glance, plus a color glow.

Skip it if

  • You want a number within minutes; Airthings samples radon every 60 minutes.
  • Your monitor will sit where there is no 2.4 GHz Wi-Fi and you want remote access.
See how it compares: Airthings radon monitors comparedWho it fits
  • Airthings View Radon
  • Airthings View Radon, photo 2 of 5
  • Airthings View Radon, photo 3 of 5
  • Airthings View Radon, photo 4 of 5
  • Airthings View Radon, photo 5 of 5

Photos: Airthings

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  • PowerBattery
  • ReadingsScreen and app
  • C-NRPP 2024/25Approved
  • Every figure checked against the specifications Airthings publishes
  • Independent test results shown the same way for every product, unranked
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About this item

As Airthings states it

  • How it measures: Alpha spectrometry, passive diffusion chamber
  • Reading updates: Samples radon every 60 minutes
  • Display and app: Built-in display, phone app, Bluetooth, Wi-Fi
  • Power: Battery: 6 AA batteries, or a USB cable
  • Units: pCi/L and Bq/m³ published

The View Radon is Airthings' Wi-Fi radon monitor: an alpha spectrometry sensor, a 2.9-inch e-paper display, a red, yellow or green glow, and the choice of six AA batteries or a USB cable. C-NRPP's 2024/25 evaluation approved a device it lists as the Airthings View, linking Airthings' View Radon page, with grades of B, C, B and B across its four rounds.

What you get

The box holds six AA batteries, a USB cable and a quick start guide with the monitor, which weighs 11.4 oz (323 g) with batteries and measures 6.7 by 3.5 by 1.3 inches. A free 5-year extended warranty is available if you register within 30 days of purchase, in addition to the standard warranty.

In the box and running costs

How it works

What it measures and how

The sensor, the sampling and the readings, then who has checked it

How it works

In our words, from the maker's documents

Airthings describes the View Radon's radon technology as a passive diffusion chamber with alpha spectrometry as the detection method, sampling radon every 60 minutes. Temperature and humidity are sampled every 5 minutes. The 2024 comparison in Sensors lists a photodiode with alpha spectrometry as the detection principle of the View Plus, the View Radon's sibling, which the study tested alongside it.

Airthings publishes a measurement range of 0 to 500 pCi/L, or 0 to 20,000 Bq/m³. The display is a 2.9-inch ePaper screen that you can set to show the readings you check most, and a glow indicator turns green, yellow or red. Airthings' thresholds for that glow are below 2.7 pCi/L, from 2.7 to under 4 pCi/L, and 4 pCi/L or more. The EPA's own reference points are different: it says to fix a home at 4 pCi/L or more and to consider fixing between 2 and 4 pCi/L.

The View Radon connects over 2.4 GHz Wi-Fi, with Bluetooth for setup and Airthings SmartLink for linking other Airthings devices. With Wi-Fi and the USB cable connected, it can act as the hub that brings Airthings Wave monitors online, so readings and notifications reach the app away from home.

Airthings' advice in the app matches C-NRPP's: pay attention to the long-term average, because temporary spikes may be nothing to worry about, and look for a cause, such as a closed basement door or ventilation turned off, when they happen.

What the manufacturer says

Airthings's own statements, attributed

  • Airthings saysAirthings states accuracy and precision at 5.4 pCi/L (200 Bq/m³) of about 10% after 7 days and about 5% after 2 months.
  • Airthings saysC-NRPP lists the stated accuracy for the Airthings View as ±10% on the 7-day average and ±5% on the 2-month average, after 30 days at 200 Bq/m³.
  • Airthings saysAirthings states battery life of up to 3 years, depending on the sensor interval and Wi-Fi router; elsewhere on the same page it says up to 2 years.

These are Airthings's own statements, attributed to it. They are not our findings, and we have not tested this product ourselves.

Independent evidence

C-NRPP 2024/25, recalls and studies

C-NRPP 2024/25
Approved in C-NRPP's 2024/25 consumer monitor evaluation

Listed by C-NRPP as "Airthings View". Results published May 2025.

Grade by round
  • Round 1B218 Bq/m³, 23°C, 28% RH, 7 days
  • Round 2C210 Bq/m³, 29°C, 70% RH, 7 days
  • Round 3B436 Bq/m³, 23°C, 36% RH, 7 days
  • Round 4B1,201 Bq/m³, 23°C, 35% RH, 7 days

C-NRPP grades each round by measurement error: A is 10% or less, B more than 10% and up to 20%, C more than 20% and up to 30%. It recommends devices that average B or better.

Earlier round

C-NRPP's 2023 report listed “Airthings View Plus” as having passed its performance test.

Recalls
No Health Canada recall or advisory names this device.
Peer-reviewed studies
  • In a 54-day field comparison at Spain's Laboratory of Natural Radiation (1 July to 23 August 2023), against a calibrated AlphaGUARD reference monitor, the View Plus's average for the whole period was 7.7 percent above the reference's, and 1.6 percent of its expected readings were not recorded. In the study's response-time test, a sharp rise that the reference followed in about 8 hours, it reached only the 10 percent level of the rise, not the 50 or 90 percent levels.
  • In a 54-day field comparison at Spain's Laboratory of Natural Radiation (1 July to 23 August 2023), against a calibrated AlphaGUARD reference monitor, the View Radon's average for the whole period was 10.0 percent above the reference's, and 0.8 percent of its expected readings were not recorded. In the study's response-time test, a sharp rise that the reference followed in about 8 hours, it reached only the 10 percent level of the rise, not the 50 or 90 percent levels.
Notes
  • C-NRPP's 2024/25 listing is named "Airthings View" and links Airthings' View Radon page (airthings.com/fr-ca/view-radon); it does not say which View model was tested. Its 2023 report listed the View Plus.
  • C-NRPP tested Canadian-market units; we have not confirmed the US versions are identical.

C-NRPP is the Canadian National Radon Proficiency Program. Its 2024/25 results were published in May 2025.

Airthings View Radon

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Specifications

Specifications

Every figure as the maker states it

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The maker's figures

Type
Continuous monitor, battery or USB, Wi-Fi, alpha spectrometry
How it measures
Alpha spectrometry, passive diffusion chamber
First reading
Not stated by the manufacturer
Reading updates
Samples radon every 60 minutes
Display and app
Built-in display, phone app, Bluetooth, Wi-Fi
Power
Battery: 6 AA batteries, or a USB cable
Units
pCi/L and Bq/m³ published

What is in the box

The box holds six AA batteries, a USB cable and a quick start guide with the monitor, which weighs 11.4 oz (323 g) with batteries and measures 6.7 by 3.5 by 1.3 inches. A free 5-year extended warranty is available if you register within 30 days of purchase, in addition to the standard warranty.

What it costs to run

No lab fee, and the Airthings app is free. On batteries, the cost is six AA cells every couple of years, depending on how often it samples and on your Wi-Fi router; on the USB cable it runs from the cable, and from its batteries if the cable is removed.

Fit and setup

Who it fits, and how to use it

The fit, then setup and placement as the guidance asks

Who it fits

Good fit if, and look elsewhere if

Good fit if

  • You want readings and alerts on your phone from anywhere, over Wi-Fi.
  • You want a screen you can read at a glance, plus a color glow.
  • You want the choice of batteries or a USB cable.
  • You plan to add Airthings Wave monitors and want this one to be their hub.

Look elsewhere if

  • You want a number within minutes; Airthings samples radon every 60 minutes.
  • Your monitor will sit where there is no 2.4 GHz Wi-Fi and you want remote access.
  • You want a monitor graded A in every C-NRPP round; the Airthings View listing graded B, C, B and B.
  • You need a result for a home sale; check what your state accepts before relying on any consumer monitor.

Setup and placement

3 steps

  1. Airthings says the View Radon suits basements and ground floors, where radon levels are usually highest, and it can be wall-mounted or placed on a table. Airthings recommends operating conditions of 39.2 to 104°F and 0 to 85% humidity, non-condensing.
  2. The EPA's guidance for any home test adds the rest: the lowest lived-in level, a room used regularly but not the kitchen or bathroom, at least 20 inches above the floor, and away from drafts, high heat, high humidity and exterior walls. C-NRPP asks for a room used at least four hours a day and at least three months of data.
  3. Setup needs the Airthings app on one of the three latest major versions of iOS or Android, with Bluetooth 4.2 or later; Bluetooth is used for onboarding, and Wi-Fi for ongoing access.

How C-NRPP says to use any consumer monitor

  • Leave it in place for at least three months, ideally through the heating season, when indoor radon tends to be highest.
  • Put it in a room someone uses for at least four hours a day.
  • Decide about fixing your home from the long-term average, not a single day or week.
  • If you can only run a monitor for less than 91 days, follow up with a long-term test.

For where any radon test or monitor should sit in a home, see where to place a radon test.

Compare

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The same three rows for each, and the one difference that matters

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Questions

Questions people ask

6 questions about the Airthings View Radon, answered

Asked about the View Radon

Is the View Radon C-NRPP approved?

C-NRPP's 2024/25 evaluation approved a device it names the Airthings View and links to Airthings' View Radon page. It does not say which View model it tested, and its 2023 report listed the View Plus. Its detailed results show grades of B, C, B and B across the four rounds; C-NRPP recommends devices that average B or better.

What did the 2024 field study find for the View Radon?

In a 54-day field comparison in Spain in 2023, published in Sensors in 2024, the View Radon's average was 10.0 percent above a calibrated reference monitor's. In the study's test of a sharp rise, it reached only the 10 percent level of the change, not the 50 or 90 percent levels.

Does the View Radon need Wi-Fi?

Airthings lists 2.4 GHz Wi-Fi, Airthings SmartLink and Bluetooth Low Energy. Bluetooth is for onboarding and daily configuration; Wi-Fi is what gives live readings and notifications away from home.

What do the green, yellow and red glows mean?

Airthings sets green below 2.7 pCi/L, yellow from 2.7 to under 4 pCi/L, and red at 4 pCi/L or more, and says red means it may be time to seek advice from a radon mitigation professional. A color reflects recent readings; decisions rest on the long-term average.

Where should the View Radon go?

Airthings suggests basements and ground floors, where radon levels are usually highest, on a wall or a table. The EPA adds the lowest lived-in level, a room used regularly but not the kitchen or bathroom, at least 20 inches above the floor and away from drafts and exterior walls.

How is it different from the View Plus?

Airthings sells both as View monitors with the same display style. The View Radon measures radon, temperature and humidity; Airthings' View Plus page describes 7 sensors, including radon, particulate matter and VOCs.

What to do next

Updated October 1, 2026