PurpleAir Classic Plus - Air Quality Monitor
#8 in Smart Air Quality Monitors · Rated 4.4
Outdoor-ready PM2.5 monitor with dual sensors and WiFi live map
PurpleAir Classic Plus is a widely used low-cost air quality monitor designed for both indoor and outdoor use. It features the classic PA-II sensor architecture with dual PMS5003 counters for improved reliability and transmits data to the public PurpleAir interactive map. It’s a popular choice for hobbyists, schools, and researchers who want real-time PM2.5 data and a large, sharable data feed. While it emphasizes PM2.5, it relies on the broader PurpleAir network to provide context and trend data, making it a strong option for users who want to participate in a global IAQ data community.
Features
- Dual PMS5003 sensors (PA-II based)
- WiFi data transmission to PurpleAir map
- Outdoor-ready design (with enclosure options)
- Real-time PM2.5 readings with local display options
- APIs for data access
Pros
- Strong PM2.5 accuracy for a consumer device
- Large networked data visualization via PurpleAir map
- Flexible placement (indoor/outdoor)
Cons
- Limited sensor suite vs premium IAQ monitors
- Requires internet access for live map data