Air quality can shift quickly, from seasonal wildfire smoke to everyday indoor pollutants, so knowing what's in your air matters. Ambient Weather's air quality monitors track fine particulate matter (PM2.5), larger particles (PM10), and CO2 in real time. The PM25 Wireless Outdoor Particulate Monitor watches air quality around your property, the PM25IN Wireless Indoor Particulate Monitor tracks PM2.5 levels inside your home, and the AQIN Pro Wireless Indoor Air Quality Monitor measures PM2.5, PM10, and CO2 together for a complete indoor picture. All three connect to the Ambient Weather Network (AWN) for live data, custom alerts, and trend tracking.