Help Fight Air Pollution
Weather Underground needs your help to gather air pollution data. When you install an air pollution monitor, you protect yourself and others in your community from dirty air. Join thousands of contributors providing hyperlocal air quality data that helps keep communities informed and safe.
Why We Recommend PurpleAir
Air pollution experts affiliated with Weather Underground have evaluated several air pollution monitoring devices and have determined that the PurpleAir PA-II is the best device for most people to track the deadliest type of air pollution.
- Real-time PM2.5 monitoring — Track fine particulate matter, the most harmful type of air pollution
- Dual laser sensors — Built-in redundancy ensures accurate, reliable readings
- Community network — Your data joins a global network of sensors, improving air quality awareness for everyone
- Easy setup — Mount outdoors, connect to Wi-Fi, and start reporting in minutes
Join the Air Quality Network
Every sensor makes a difference. By adding a PurpleAir monitor to your home or business, you contribute to a growing network of real-time air quality data that helps communities make informed decisions about the air they breathe.
Buy a PurpleAir Sensor