Choose a dataset, start time, duration, and bounding box to get show links, code or preview data. For detailed instructions, expand section.
Click the "Choose Dataset" button to get a list of datasets. The initial list are commony used. Use "Show All" to expand the list.
Set a starting date in UTC and a duration (up to 168h or 7days). Press "p" or "n" for the previous/next hour. Press "P" or "N" for the previous/next day.
Change the bounding box either by edit the text, or by clickinng twice on the map to set box corners.
The "Show" option lets you display example links or commands (wget, curl, Python, R, matlab), description of how to use with Excel, or a preview the data.
Formats for downloads are "gzipped tab-delimited text", raw tab-delimited text, or GIS-ready GeoJSON. Unzipped data downloads are slow.
The map below shows "active" AirNow monitors to help outline where you might find RSIG data.