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Wildfire Smoke Alert:
Wildfire smoke brings harmful PM2.5 particles indoors. View Plus alerts you when levels rise, and Renew clears the air — helping you stay ahead of poor air quality.
WiFi connected
Multi-room coverage
Easy & fast setup
5-year warranty available. Details
HSA/FSA eligible with 
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1 x Renew air purifier
Designed inside and out to be the perfect choice for bedrooms. Quiet, understated, and effective.
1 x View Plus
Great for family rooms and kitchens where the family gathers and spends time together.
The Wildfire Duo
The Wildfire Duo pairs the Airthings View Plus — a seven-sensor indoor air quality monitor — with the Airthings Renew HEPA-13 air purifier. View Plus detects rising PM2.5 levels the moment wildfire smoke infiltrates the home. Renew filters those fine particles out of the air you breathe.
Designed for wildfire season — and every day between.
Detect
Seven sensors including PM2.5, radon, and CO₂. WiFi-connected. Cable-free placement with up to two years on six AA batteries.
Purify
HEPA-13 filtration captures 99.97% of particles down to 0.3 microns. Auto mode responds to PM2.5 spikes automatically. Silent at 23 decibels.
The problem
Wildfire smoke travels through windows, doors, and ventilation gaps the moment outdoor air quality declines. According to the EPA, fine particulate matter (PM2.5) is the greatest health concern from wildfire smoke — and the EPA's 2020 National Emissions Inventory estimated that wildland fires were responsible for 52% of total PM2.5 emissions in the United States.
52%
Share of total US PM2.5 emissions attributed to wildland fires, according to the EPA's 2020 National Emissions Inventory.
2.5 µm
Maximum diameter of PM2.5 particles. The EPA notes these particles are small enough to travel deep into the lungs and pose serious respiratory and cardiovascular risks.
5 µg/m³
The WHO's 2021 recommended annual mean PM2.5 limit. The WHO states there is no known safe level of exposure to fine particle pollution.
7.2M
Acres of US land impacted by wildfires on average each year, according to Airthings analysis of US wildfire data.
What is PM2.5?
PM2.5 refers to airborne particles measuring 2.5 micrometers or smaller in diameter. According to the EPA, these particles are the greatest health concern in wildfire smoke because they can travel deep into the lungs and, in some cases, pass into the bloodstream.
How it works
The Wildfire Duo works as a closed loop: View Plus measures indoor PM2.5 continuously, the Airthings app sends a notification when levels rise, and Renew's Auto mode increases fan speed to clear the air.
Step 01
The Airthings View Plus uses a laser-based particle counter to detect PM2.5 between 300 nanometers and 10 micrometers. Sample rate is every 2.5 minutes when plugged in via USB-C, or every 10 minutes on battery.
Step 02
The free Airthings app pushes an alert to iOS or Android the moment PM2.5 levels move outside the recommended range, so you know what's happening at home whether you're there or not.
Step 03
Renew has its own onboard laser PM2.5 sensor. In Auto mode, the air purifier increases fan speed automatically when particle levels rise, then quiets down again once the air is clean.
The Airthings app
The Airthings app brings View Plus readings and Renew controls together in a single view. Live PM2.5 graphs, long-term trends, and remote purifier control all in one place — free, on iOS and Android.
View Plus
The Airthings View Plus tracks seven indicators of indoor air quality: radon, particulate matter (PM2.5), carbon dioxide (CO₂), volatile organic compounds (VOCs), temperature, humidity, and air pressure. It's Airthings' most comprehensive home air quality monitor.
The eInk display shows your chosen readings at a glance — no need to open the app — and a motion-activated status ring lights up green, yellow, or red so you can read the room from across the room.
Renew
The Airthings Renew uses a four-stage filtration system that captures particles from the largest pet hair down to fine wildfire smoke. The HEPA-13 stage removes 99.97% of all particles in the air measuring 0.3 microns in diameter.
Why the Wildfire Duo
A monitor alone tells you the air is unsafe; a purifier alone runs without knowing whether it needs to. The Wildfire Duo links the two — so detection drives action, and you can see the air quality improve in real time as Renew clears the room.
What's included
The Wildfire Duo is a two-device bundle: one Airthings View Plus monitor and one Airthings Renew air purifier, both ready to pair to the free Airthings app.
Detect
Purify
Placement
Place View Plus in the room where you spend the most waking time — typically the living room or main living area. Place Renew where you sleep or breathe most — typically the primary bedroom. This setup detects smoke at its likely entry point and purifies the room where exposure time is longest.
Smart home
The Airthings View Plus and Renew both integrate with Amazon Alexa, Google Assistant, and IFTTT. You can ask for live air quality readings by voice or build automation rules that trigger Renew when PM2.5 rises.
Amazon Alexa
Voice readings and control
Google Assistant
Voice readings and control
IFTTT
Automation rules
Airthings app
Free, iOS and Android
Bundle FAQ
Straightforward answers about how the Airthings View Plus and Airthings Renew work together to detect and clear wildfire smoke indoors.
The Airthings View Plus uses a laser scattering particle counter that detects particles between 300 nanometers and 10 micrometers in diameter — the size range that includes wildfire smoke PM2.5. When View Plus is plugged in via USB-C, it samples every 2.5 minutes; on battery, every 10 minutes.
Yes. The Airthings Renew has a built-in laser PM2.5 sensor. In Auto mode, Renew continuously measures particle levels and increases fan speed when PM2.5 rises — from wildfire smoke, cooking, or dust — then quiets down when the air is clean.
Airthings rates the Renew for rooms up to 525 square feet, with a CADR of 140 CFM for smoke. That makes it well-suited to a typical bedroom, home office, or living room. Larger open-plan spaces benefit from placing Renew nearest the area people spend the most time.
Yes. The Airthings View Plus monitors seven indicators of indoor air quality: radon, PM2.5, CO₂, VOCs, temperature, humidity, and air pressure. Radon is a year-round concern; the EPA identifies it as the leading cause of lung cancer in non-smokers in the United States.
The HEPA-13 and activated charcoal filters are designed to be replaced periodically. Heavy wildfire smoke events can shorten filter life, so the Airthings app tracks filter usage and notifies you when a change is recommended. The outer textile and inner mesh pre-filters are washable and reusable.
Yes. The Airthings View Plus monitors radon, CO₂, VOCs, humidity, and temperature year-round — issues unrelated to wildfires. The Airthings Renew filters everyday allergens, pet dander, cooking smoke, and household VOCs whenever it's running, not only during fire events.
Particulate matter (PM 2.5)
Fine particulate matter (PM2.5) reaches deep in the lungs causing short-term discomfort and long-term health risks.
Temperature
Temperature is not just a matter of comfort, it can negatively affect sleep quality, mood, and alertness.
Air pressure
Changes in air pressure affect radon levels and, for some, they can trigger headaches, joint stiffness and pain.
High-precision laser-based particulate matter sensor.
Particulate matter (PM2.5) sensor threshold
● ≥25 μg/m3
●≥10 and <25 μg/m3
● <10 μg/m3
Performance:
ACH (air changes per hour)
● 5 x for 210 sq ft room (19.5 m2)
● 4.8 x for 219 sq ft room (20 m2)
● 4 x for 263 sq ft room (24 m2)
● 4 x for 263 sq ft room (24 m2)
● 3 x for 350 sq ft room (33 m2)
● 2 x for 525 sq ft room (49 m2)
CADR (clean air delivery rate): 140 CFM
Noise level: 23 dB (Silent mode) - 51 dB (Boost mode)
Power usage: 2.6 W (Silent) - 31.5 W (Boost) - 1 w (Standby)
Connectivity: WiFi 802.11b/g/n
Remote control: Via Airthings app
Specs:
Dimensions (HxWxD): 16 x 16 x 5.7 in (41 x 41 x 17 cm)
Net weight (unit with filters): 11.9 lbs (5.4 kg)
Power cable length: 5.6 ft (1.7 m)
Requirements:
Airthings app: Internet-connected smartphone with one of the 3 latest major versions of iOS or Android, supporting Bluetooth 4.2 or later
Wireless connectivity: Router operating at 2.4 GHz and 802.11b/g/n
Comes with a standard warranty, details are available here
Renew has been demonstrated to meet the EPA's guidelines for energy efficiency.
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