Create stacked AQI bar

Draws a stacked bar indicating AQI levels on one side of a plot The monitor_timeseriesPlot function uses this function internally when specifying addAQI = TRUE.

addAQIStackedBar(
  pollutant = c("PM2.5", "CO", "OZONE", "PM10", "AQI"),
  palette = c("EPA", "subdued", "deuteranopia"),
  width = 0.01,
  height = 1,
  pos = c("left", "right"),
  NAAQS = c("PM2.5_2024", "PM2.5")
)

Arguments

pollutant

EPA AQS criteria pollutant.

palette

Named color palette to use for AQI categories.

width

Width of the bar as a fraction of the width of the plot area.

height

Height of the bar as a fraction of the height of the plot area.

pos

Position of the stacked bar relative to the plot.

NAAQS

Version of NAAQS levels to use. See Note.

Value

No return value, called to add color bars to a time series plot.

Note

On February 7, 2024, EPA strengthened the National Ambient Air Quality Standards for Particulate Matter (PM NAAQS) to protect millions of Americans from harmful and costly health impacts, such as heart attacks and premature death. Particle or soot pollution is one of the most dangerous forms of air pollution, and an extensive body of science links it to a range of serious and sometimes deadly illnesses. EPA is setting the level of the primary (health-based) annual PM2.5 standard at 9.0 micrograms per cubic meter to provide increased public health protection, consistent with the available health science. See PM NAAQS update.