$69.99
Updated October 2026
Data from the official Amazon and Apollo Automation sites.
2026 verdict
Across the 2026 comparison, Apollo MSR-2 with CO2 earns the nod over Amazon Smart Air Quality Monitor on the strength of price, sensors, and alerts.
It has the clearer edge on price, sensors, and alerts, and it stays ahead on local control. Choose Amazon Smart Air Quality Monitor only if connectivity and integrations matter more to you than the broader advantage from Apollo MSR-2 with CO2. For the average buyer, Apollo MSR-2 with CO2 is the safer choice.
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| Feature | Amazon Smart Air Quality Monitor | Apollo MSR-2 with CO2 | Winner |
|---|---|---|---|
| Price | $69.99 | $56.09 | Apollo MSR-2 with CO2 |
| Connectivity | 2.4 GHz WiFi, Bluetooth | 2.4 GHz WiFi | Amazon Smart Air Quality Monitor |
| Integrations | Alexa, Home Assistant | Home Assistant | Amazon Smart Air Quality Monitor |
| Sensors | TVOC, PM2.5, CO, Temperature, Humidity | CO2, Temperature, Atmospheric Pressure, Ambient Light, UV, Occupancy | Apollo MSR-2 with CO2 |
| Alerts | Air Quality Alerts | Temperature Alerts, Air Quality Alerts | Apollo MSR-2 with CO2 |
| Local Control | NO | YES | Apollo MSR-2 with CO2 |
| Weather Resistance | NO | NO | Tie |
| Screen | NO | NO | Tie |
$69.99
- + Connectivity: 2.4 GHz WiFi, Bluetooth
- + Integrations: Alexa, Home Assistant
- - Price: $69.99 vs $56.09
- - Sensors: TVOC, PM2.5, CO, Temperature, Humidity vs CO2, Temperature, Atmospheric Pressure, Ambient Light, UV, Occupancy
Winner
$56.09
- + Price: $56.09
- + Sensors: CO2, Temperature, Atmospheric Pressure, Ambient Light, UV, Occupancy
- + Alerts: Temperature Alerts, Air Quality Alerts
- - Connectivity: 2.4 GHz WiFi vs 2.4 GHz WiFi, Bluetooth
- - Integrations: Home Assistant vs Alexa, Home Assistant
Frequently Asked Questions
Which is better overall: Amazon Smart Air Quality Monitor or Apollo MSR-2 with CO2?
Apollo MSR-2 with CO2 has the stronger overall profile in this comparison, especially for price, sensors, and alerts.
What is the biggest difference between Amazon Smart Air Quality Monitor and Apollo MSR-2 with CO2?
Price is one of the clearest differences: Amazon Smart Air Quality Monitor lists $69.99, while Apollo MSR-2 with CO2 lists $56.09.
Which one looks better on price?
Amazon Smart Air Quality Monitor is listed at $69.99, while Apollo MSR-2 with CO2 is listed at $56.09. Apollo MSR-2 with CO2 (better spec).
Who should buy Amazon Smart Air Quality Monitor?
Choose Amazon Smart Air Quality Monitor if your priority is connectivity and integrations and that matters more than price.
Who should buy Apollo MSR-2 with CO2?
Choose Apollo MSR-2 with CO2 if your priority is price and sensors and that matters more than connectivity.
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