PSCAA Ultra Fine Particulate (UFP), SMPS Monitoring web page

Under Construction!

  • Pscaa ufp n july 28, 2026 smps 1b
  • Pscaa ufp chinatown july 28, 2026 smps 1a

Notes:

– Particles are counted at 1 or 2.5 minutes per scan of the full size bin range

– To select an earlier date, select a time button

– SeaTac North monitoring began early April 2025

Other notes:

  • – Data have been smoothed in both dimensions, with a gaussian filter.
  • – There are about 240 bin sizes.

last updated 2025.04.01

questions, comments? contact: phil.swartzendruber at cleanairpugetsound dot net