Download EPA air quality data

Source: R/epa_downloadData.R

This function downloads air quality data from the EPA and saves it to a directory.

Available parameter codes include:

  1. 44201 -- Ozone

  2. 42401 -- SO2

  3. 42101 -- CO

  4. 42602 -- NO2

  5. 88101 -- PM2.5

  6. 88502 -- PM2.5

  7. 81102 -- PM10

  8. SPEC -- PM2.5

  9. WIND -- Wind

  10. TEMP -- Temperature

  11. PRESS -- Barometric Pressure

  12. RH_DP -- RH and dewpoint

  13. HAPS -- HAPs

  14. VOCS -- VOCs

  15. NONOxNOy

epa_downloadData(
  year = NULL,
  parameterCode = "88101",
  downloadDir = tempdir(),
  baseUrl = "https://aqs.epa.gov/aqsweb/airdata/"
)

Arguments

year

year
parameterCode

pollutant code
downloadDir

directoroy where monitoring data .zip file will be saved
baseUrl

base URL for archived daily data

Value

Filepath of the downloaded zip file.

Note

Unzipped CSV files are almost 100X larger than the compressed .zip files.

References

EPA AirData Pre-Generated Data Files

Examples

if (FALSE) {
# Fail gracefully if any resources are not available
try({

zipFile <- epa_downloadData(2016, "88101", '~/Data/EPA')
tbl <- epa_parseData(zipFile, "PM2.5")

}, silent = FALSE)
}