Figure 2. Fine Particulate Matter (PM 2.5) Levels Dropped at the Start of the Stay-at-Home Order, Returned to Normal in April and May
Percent change of PM 2.5 monthly average concentrations in 2020, compared to 2010-2019 averages
Created with Raphaël 2.1.2
0%
X
−10%
−8%
−6%
−4%
−2%
2%
4%
−4%
Feb 25
−10%
Mar 25
4%
Apr 25
2%
May 25