FAQ

Shipping This sub-category relates to FAQ questions about PurpleAir shipping. Sensors This category relates to FAQ questions about PurpleAir sensors. Purchasing Welcome to our purchasing page. You will find most information on common questions from tax-exempt to doing a purchase order. Let us know if you have any questions. Real-Time Map This sub-category is related to FAQ questions about the PurpleAir map.

Topic	Replies	Views	Activity
PurpleAir FAQ FAQ Here is a selection of commonly asked questions. But these are not all questions or answers. Clicking on any one of the questions will take you to that question in our community forum. From there, you can search for more…	0	21984	March 1, 2023
About the FAQ category FAQ	1	2805	December 29, 2022
Does PurpleAir have an app? Sensors	14	15614	July 29, 2026
What hostnames and ports do PurpleAir sensors use? Sensors	2	2382	November 7, 2025
Can I add a mesh screen to my sensor to keep out bugs and critters? Sensors	0	5817	June 4, 2022
Why isn't my map location being saved? Real-Time Map	0	199	July 24, 2025
Can I calibrate my PurpleAir sensor? Sensors	0	4053	June 4, 2022
Can I calibrate the temperature sensor FAQ	0	209	July 13, 2025
How do the PurpleAir sensors differ, and can I mount them indoors OR outdoors? Sensors	1	2944	June 9, 2025
How Do I Know if my Sensor is Working Properly? FAQ	0	564	April 11, 2025
Can I set my PurpleAir sensor to private, and how do I view a private sensor on the map? Real-Time Map	9	3285	February 21, 2025
Purchasing Purchasing	0	419	December 13, 2024
Can I Take my Sensor on the Road? Sensors	0	377	December 18, 2024
Tax Exempt Purchasing	0	459	December 13, 2024
Purchase Orders Purchasing	0	1469	August 15, 2022
Payment Methods Purchasing	0	4636	June 2, 2022
How to Request a Refund Purchasing	0	1391	October 20, 2021
What does downgraded mean on the graph? Real-Time Map	0	1582	June 3, 2022
Indoor Sources of Particulate Matter (PM) FAQ	0	568	June 4, 2024
What do I do With a Replacement Sensor? Real-Time Map	0	226	September 25, 2024
How do I match PurpleAir's Map with AirNow's Fire and Smoke Map? FAQ	0	1579	July 26, 2023
Can I add data from non-PurpleAir sensors? Real-Time Map	0	2200	June 3, 2022
Why are my sensor's LEDs blue? Sensors	0	1236	January 12, 2024
LCS vs FRM/FEM Sensors	0	198	June 27, 2024
How Do I Calculate My API Call's Point Cost FAQ	0	640	May 29, 2024
Does SD Card Data Get Uploaded to the Map? Sensors	0	244	June 19, 2024
How do I view Outdoor/Indoor/My PurpleAir sensors? Real-Time Map	0	1094	June 3, 2022
Should I use the conversion factors on the PurpleAir map? Real-Time Map	4	5405	March 14, 2024
How do I download sensor data? Sensors	3	6296	March 4, 2024
My Zen LED's have gone dark. Did they fail? Sensors	8	2364	December 31, 2023