How can I identify which PurpleAir sensors recorded data during the Palisades Fire (Jan 7–31, 2025)

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Hi all,
I’m working on my MSc thesis examining air quality during the Palisades Fire in Los Angeles, California, and I’m trying to figure out which PurpleAir sensors recorded data during the fire period (January 7–31, 2025).

Is there a way to filter or map sensors by activity during that time frame, especially within a ~20-mile radius of Pacific Palisades? Also, how can I check if sensors were online and reporting valid data during those dates?

Any advice or tools that could help with this would be greatly appreciated!

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There’s an API that supports a radius query for sensors. The API has a limited free tier that you’ll blow through quickly when accessing that much data. I’d contact PurpleAir directly and let them know exactly what data you’re after so they can make arrangements for you.

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