PM2.5 Daily Concentrations (Calendar View)
Daily PM2.5 concentrations are visualized for a selected location and time period. Each tile on the calendar represents a single day of the year and is color-coded according to PM2.5 concentration tiers.
The data is sourced from US EPA Pre-Generated Data Files, https://aqs.epa.gov/aqsweb/airdata/download_files.html.
- Enter an AQS Site ID or click a site on the map to select it.
- Select a starting year and an ending year.
- Click the Submit button to display the daily PM2.5 data.
Note: The displayed PM2.5 values are for informational purposes only and may not reflect official EPA values reported through the AQS system.
PM2.5 Levels:
< 9
9 - 35
> 35
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