Learn how property-specific extreme air quality risk is determined.
A property's Air Factor is an indicator of its risk experiencing poor air quality days over the next thirty years. The model assigns each property an Air Factor, ranging from 1 (minimal risk) to 10 (extreme risk). Air Factors are based on a property’s current and future risk two major criteria pollutants - particulate matter (PM2.5) and Ozone due to a changing environment. A changing environment means warmer and drier conditions that increase the likelihood of wildfire smoke and the formation of ozone which contributes to poor air quality days. Learn more about the environmental factors increasing air quality risk.