# How to Calculate the US EPA PM2.5 AQI

**URL:** <https://community.purpleair.com/t/how-to-calculate-the-us-epa-pm2-5-aqi/877>\
**Category:** Data\
**Created:** [June 7, 2022, 8:17pm UTC](https://community.purpleair.com/t/how-to-calculate-the-us-epa-pm2-5-aqi/877 "2022-06-07T20:17:56Z")\
**Posts on this page:** 1\
**Showing post:** 14

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**Author:** ![davepwhite](https://avatars.discourse-cdn.com/v4/letter/d/13edae/32.png) [@davepwhite](https://community.purpleair.com/u/davepwhite)\
**Post date:** [December 20, 2025, 6:21pm UTC](https://community.purpleair.com/t/how-to-calculate-the-us-epa-pm2-5-aqi/877/14 "2025-12-20T18:21:19Z")

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Thanks for all this information!

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_[View the full topic](https://community.purpleair.com/t/how-to-calculate-the-us-epa-pm2-5-aqi/877)._