Information About the LRAPA PM2.5 Concentration and Air Quality Index
Lawrence Berkeley National Laboratory is
using the LRAPA correction factor during this wildfire event. As such,
during the wildfire event, PaloAltoWeather.com will show PM2.5
concentrations and AQIs with and without the LRAPA correction.
Applying the correction will consistently report lower (better) PM2.5
concentrations and lower (better) AQIs. The LRAPA correction factor
was developed by the
Lane Regional Air Protection Agency. It was developed for Purple
Air sensors in Lane County, Oregon where PM2.5 levels are primarily
driven by winter time wood smoke from home wood heating.