Apollo MSR-2 with CO2 vs IQAir AirVisual Outdoor

Data from Amazon and official Apollo Automation and IQAir sites.

2026 verdict

For most buyers in 2026, IQAir AirVisual Outdoor is the safer pick. It separates itself most clearly on weather resistance, connectivity, and sensors, while still looking better on its broader overall balance. Apollo MSR-2 with CO2 still makes sense if price, integrations, and alerts is your priority, but most buyers should still lean toward IQAir AirVisual Outdoor. That is why IQAir AirVisual Outdoor wins the verdict here.

Apollo Automation

Apollo MSR-2 with CO2

$56.09

BUY NOW

Winner

IQAir

IQAir AirVisual Outdoor

$299.99

BUY NOW

Feature	Apollo MSR-2 with CO2	IQAir AirVisual Outdoor	Winner
Price	$56.09	$299.99	Apollo MSR-2 with CO2
Weather Resistance	NO	YES (Outdoor)	IQAir AirVisual Outdoor
Connectivity	2.4 GHz Wifi	2.4 GHz Wifi, Ethernet	IQAir AirVisual Outdoor
Integrations	Home Assistant	None	Apollo MSR-2 with CO2
Sensors	CO2, Temperature, Atmospheric Pressure, Ambient Light, UV, Occupancy	PM1, PM2.5, PM10, CO2, Temperature, Humidity, Atmospheric Pressure	IQAir AirVisual Outdoor
Alerts	Temperature Alerts, Air Quality Alerts	Air Quality Alerts	Apollo MSR-2 with CO2
Screen	NO	NO	Tie

Apollo Automation

Apollo MSR-2 with CO2

$56.09

BUY NOW

+ Price: $56.09
+ Integrations: Home Assistant
+ Alerts: Temperature Alerts, Air Quality Alerts
- Weather Resistance: NO vs YES (Outdoor)
- Connectivity: 2.4 GHz Wifi vs 2.4 GHz Wifi, Ethernet

Winner

IQAir

IQAir AirVisual Outdoor

$299.99

BUY NOW

+ Weather Resistance: YES (Outdoor)
+ Connectivity: 2.4 GHz Wifi, Ethernet
+ Sensors: PM1, PM2.5, PM10, CO2, Temperature, Humidity, Atmospheric Pressure
- Price: $299.99 vs $56.09
- Integrations: None vs Home Assistant

Frequently Asked Questions (FAQ)

Which is better overall: Apollo MSR-2 with CO2 or IQAir AirVisual Outdoor?: IQAir AirVisual Outdoor has the stronger overall profile in this comparison, especially for weather resistance, connectivity, and sensors.
What is the biggest difference between Apollo MSR-2 with CO2 and IQAir AirVisual Outdoor?: Price is one of the clearest differences: Apollo MSR-2 with CO2 lists $56.09, while IQAir AirVisual Outdoor lists $299.99.
Which one looks better on price?: Apollo MSR-2 with CO2 is listed at $56.09, while IQAir AirVisual Outdoor is listed at $299.99. Apollo MSR-2 with CO2 (better spec).
Who should buy Apollo MSR-2 with CO2?: Choose Apollo MSR-2 with CO2 if your priority is price and integrations and that matters more than weather resistance.
Who should buy IQAir AirVisual Outdoor?: Choose IQAir AirVisual Outdoor if your priority is weather resistance and connectivity and that matters more than price.