AirKnight Premium Indoor Air Quality Monitor Indoor & Air Quality
Sensor. VOC Detector, CO2 Monitor, Formaldehyde Detector HCHO, AQI, PM2.5, PM10 Temperature Humidity Air AQI CO2 Meter
at Amazon· sold by Top Flight Detection
Go to Amazon$89.99 has not moved in 21 days.
Every check since September 18 has read the same number. That does not make it cheap, but waiting for a drop has nothing behind it: the price has not been falling.
This describes the prices we recorded. It is not a forecast of where this one goes next.
Price at AmazonVerified
Price history
Tracking since September 18, 2026 · 23 days on record
The price has not changed since we started watching, so there is no line to draw yet. A chart appears the first time it moves.
Sales events
Next on the calendar: Black Friday, November 27. We keep checking this price through it and report here what it did.
Where to buy
- Held for
- 22d
- Their 23-day low
- $89.99
- Checked
- 8h ago
Prices checked at least every 12 hours. “Held for” is how long that retailer has been charging this price. A hidden price is one we cannot re-confirm recently enough to publish.
We earn a commission on purchases. It never affects our rankings.
Tell me when it drops
A notification in this browser when the price falls. No email, no account, nothing to install.
A notification carries a button that stops that alert; blocking notifications for this site in your browser stops them all.
What it is
4 attributes, in the retailer’s own words. We record the prices; these we only pass on.
- Color
- White
- Weight
- 0.75 pounds
- Dimensions
- 7.55 × 3.16 × 2.09 inches
- Model
- AT1000
Cheaper in Air & climate, and what changes
Things we track on the same shelf for at least 10% less than $89.99, with the attributes the retailers describe differently. Their words, not our judgement — we record prices, we do not test products.
AmazonSmart Air Quality Monitor, Detects temperature, humidity, carbon monoxide, PM2.5 and VOCs, Get notifications when air quality drops, Works with Alexa$69.99 at Amazon $20.00 lessNeither retailer published an attribute we can compare.
MOOKAAir Purifiers for Home Large Room up to 2200sq.ft, MOOKA Air purifier for Home Pets with Washable Filter, PM 2.5 Display Air Quality Sensor Air Cleaner for Bedroom, Dorm room, Pets, Office PR1 (White)$79.99 at Amazon $10.00 lessNeither retailer published an attribute we can compare.
DREOSpace Heaters for Indoor Use with Thermostat, 1500W Electric Heaters$74.99 at Amazon $15.00 lessWeight: 4.63 pounds instead of 0.75 poundsDimensions: 15.8 × 5.9 × 5.9 inches instead of 7.55 × 3.16 × 2.09 inches
Others we track in Air & climate
See all Air & climate prices
ECOSELFAir Purifiers for Home Large Room, Up to 2400 Ft² with True HEPA Filter$89.991 retailer · 1 recorded price
AirWhisper16-in-1 Indoor Air Quality Monitor, High-Precision Multi-Parameter Smart Air Quality Tester with HD Real-Time Color Screen, Portable Air Quality Monitor for Home, Office, Cars, School, Bedroom$89.991 retailer · 2 recorded prices
YNAK16 in 1 Air Quality Monitor Indoor 7" High-Precision Real-Time CO2 Monitor$89.99 · low $75.981 retailer · 3 recorded prices
LevoitAir Purifier for Home Pets Hair Allergens in Bedroom Quiet Purifiers$89.99 · low $71.851 retailer · 10 recorded prices
GermGuardianHEPA Air Purifier Tower - 22" - Gray - AC4825E$80.74 · low $76.701 retailer · 3 recorded prices
VEWIOR2 Pack Air Purifiers with Washable Filter for Home Up to 1200ft²$79.99 · low $66.471 retailer · 4 recorded prices
$89.99
at Amazon · we earn a commission