# AERMOD PM2.5 monthly averages

**URL:** <https://forum.cmascenter.org/t/aermod-pm2-5-monthly-averages/4451>\
**Category:** AERMOD\
**Created:** [October 3, 2023, 3:23am UTC](https://forum.cmascenter.org/t/aermod-pm2-5-monthly-averages/4451 "2023-10-03T03:23:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bee](https://avatars.discourse-cdn.com/v4/letter/b/ce7236/32.png) [@bee](https://forum.cmascenter.org/u/bee)\
**Post date:** [October 3, 2023, 3:23am UTC](https://forum.cmascenter.org/t/aermod-pm2-5-monthly-averages/4451/1 "2023-10-03T03:23:47Z")

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Hi all. I want to generate monthly average for PM2.5, i’ve read the AERMOD Userguide and it says cannot applied for POLLUTID PM2.5. Therefore, i ran the 24-hr and annual averages for PM2.5. Is it possible to get the monthly data from 24-hr .PLT output file? bc when i checked the 24-hr data .PLT file, the monthly row is not appear for 12 month, only several months appeared. Thank you

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**Author:** ![lizadams](https://avatars.discourse-cdn.com/v4/letter/l/49beb7/32.png) [@lizadams](https://forum.cmascenter.org/u/lizadams)\
**Post date:** [November 1, 2023, 7:51pm UTC](https://forum.cmascenter.org/t/aermod-pm2-5-monthly-averages/4451/2 "2023-11-01T19:51:23Z")

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Please submit your question to the AERMOD help desk.  
[https://www.epa.gov/scram/forms/contact-us-about-air-quality-models](https://www.epa.gov/scram/forms/contact-us-about-air-quality-models)