# Photochemical Assessment Monitoring Stations (PAMS) data in AMET

**URL:** https://forum.cmascenter.org/t/photochemical-assessment-monitoring-stations-pams-data-in-amet/4410
**Category:** AMET
**Created:** [September 18, 2023, 6:31pm UTC](https://forum.cmascenter.org/t/photochemical-assessment-monitoring-stations-pams-data-in-amet/4410 "2023-09-18T18:31:43Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Ryan](https://avatars.discourse-cdn.com/v4/letter/r/a8b319/32.png) [@Ryan](https://forum.cmascenter.org/u/Ryan)
#### Post date: [September 18, 2023, 6:31pm UTC](https://forum.cmascenter.org/t/photochemical-assessment-monitoring-stations-pams-data-in-amet/4410/1 "2023-09-18T18:31:43Z")

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Hi all,  
I am trying to download the Photochemical Assessment Monitoring Stations (PAMS) data for VOCs measurements across the US. However, only criteria air pollutant concentrations are available for download in EPA’s AirData. I noticed that AMET does have PAMS data available. May I ask how could I get PAMS data?  
@wyat.appel@lizadams  
Best,  
Ryan

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### Author: ![wyat.appel](https://avatars.discourse-cdn.com/v4/letter/w/3d9bf3/32.png) [@wyat.appel](https://forum.cmascenter.org/u/wyat.appel)
#### Post date: [September 19, 2023, 1:10pm UTC](https://forum.cmascenter.org/t/photochemical-assessment-monitoring-stations-pams-data-in-amet/4410/2 "2023-09-19T13:10:14Z")

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Ryan,

I obtain all the EPA (AQS) data, including the PAMS data, from the pre-generated files available from the link below. If you can’t find what you need in these files, I suggest reaching out to the Air Data group using the contact link available on the page provided.

[https://aqs.epa.gov/aqsweb/airdata/download\_files.html](https://aqs.epa.gov/aqsweb/airdata/download_files.html)

Wyat