Airthings 2950 Wave Radon is the top pick among smart air quality monitors under $250, rated 4.4 stars across 2,496 customer reviews.
Airthings2950 Wave Radon
4.4(2,496)$109.15
EcobeeSmart Thermostat Premium
4.5(856)27% OFF$204.97$149.63
AmazonSmart Air Quality Monitor
4.2(5,524)$69.99
AirthingsWave Plus
4.2(3,229)$249.99
GoveeSmart Air Quality Monitor
4.3(1,032)$45.99
AranetRadon Plus
4.8(274)$209.00
Airthings325 Corentium Home 2
4.5(418)$179.99
Airthings2989 View Radon
4.2(773)$219.99- Price alerts
Air Quality Monitors under $250, updated as prices fall
We check the price of every Air Quality Monitor in the catalog daily, and email you the ones that drop into this range.
AirthingsWave Mini
4.0(1,122)$89.99
GoveeSmart Air Quality Monitor CO2 H5140
4.4(225)22% OFF$89.99$69.99
EveRoom
4.0(383)$109.95
QingpingAir Monitor Lite
3.6(703)$76.00
SonoffSAWF-08P Air Quality Monitor
4.3(169)$49.90
SonoffSAWF-07P Air Quality Monitor
3.7(188)$39.90
QingpingAir Quality Monitor Gen 2
3.5(204)$149.99
AranetRadiation
4.6(76)$139.00
AranetRadon One
4.7(68)$179.00
AirthingsWave Enhance
4.2(43)20% OFF$159.99$127.99
X-SenseXR0A-iR Wi-Fi Radon Detector
4.4(22)20% OFF$99.99$79.99
SwitchBotMeter Pro (CO2 Monitor)
3.8(20)$79.99
Third RealitySmart Air Quality Sensor
$49.99
Apollo AutomationMSR-2 with CO2
$56.09
MoesCO2 Portable Temp Humi Air Quality Monitor
$69.99
MoesCO2 Air Quality Monitor Temp and Hum
$84.99
AirGradientAirGradient Open Air
$190.00
AirGradientAirGradient ONE
$230.00
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Frequently asked questions
What are the best smart air quality monitors under $250?
Airthings 2950 Wave Radon, Ecobee Smart Thermostat Premium and Amazon Smart Air Quality Monitor lead our ranking of smart air quality monitors under $250, ordered by customer rating weighted by how many reviews back it. The full list compares 26 products in this price range.
How many smart air quality monitors cost less than $250?
This page tracks 26 smart air quality monitors under $250 from 14 brands, with prices starting at $39.90.
Are these prices up to date?
Prices come from each product's Amazon listing and are re-checked continuously, so every card shows the latest price we have. A product whose price rises above $250 drops off this list on the next update.
Looking for more than $250?
See all the air quality monitors in the catalog, compared side by side on specs, price and rating.