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	22066	March 1, 2023
About the FAQ category FAQ	1	2820	December 29, 2022
Does PurpleAir have an app? Sensors	14	16018	July 29, 2026
What hostnames and ports do PurpleAir sensors use? Sensors	2	2486	November 7, 2025
Can I add a mesh screen to my sensor to keep out bugs and critters? Sensors	0	5870	June 4, 2022
Why isn't my map location being saved? Real-Time Map	0	210	July 24, 2025
Can I calibrate my PurpleAir sensor? Sensors	0	4148	June 4, 2022
Can I calibrate the temperature sensor FAQ	0	243	July 13, 2025
How do the PurpleAir sensors differ, and can I mount them indoors OR outdoors? Sensors	1	3009	June 9, 2025
How Do I Know if my Sensor is Working Properly? FAQ	0	602	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	4248	February 21, 2025
Purchasing Purchasing	0	427	December 13, 2024
Can I Take my Sensor on the Road? Sensors	0	392	December 18, 2024
Tax Exempt Purchasing	0	484	December 13, 2024
Purchase Orders Purchasing	0	1501	August 15, 2022
Payment Methods Purchasing	0	4695	June 2, 2022
How to Request a Refund Purchasing	0	1422	October 20, 2021
What does downgraded mean on the graph? Real-Time Map	0	1613	June 3, 2022
Indoor Sources of Particulate Matter (PM) FAQ	0	588	June 4, 2024
What do I do With a Replacement Sensor? Real-Time Map	0	237	September 25, 2024
How do I match PurpleAir's Map with AirNow's Fire and Smoke Map? FAQ	0	1620	July 26, 2023
Can I add data from non-PurpleAir sensors? Real-Time Map	0	2221	June 3, 2022
Why are my sensor's LEDs blue? Sensors	0	1265	January 12, 2024
LCS vs FRM/FEM Sensors	0	227	June 27, 2024
How Do I Calculate My API Call's Point Cost FAQ	0	686	May 29, 2024
Does SD Card Data Get Uploaded to the Map? Sensors	0	253	June 19, 2024
How do I view Outdoor/Indoor/My PurpleAir sensors? Real-Time Map	0	1134	June 3, 2022
Should I use the conversion factors on the PurpleAir map? Real-Time Map	4	5566	March 14, 2024
How do I download sensor data? Sensors	3	6403	March 4, 2024
My Zen LED's have gone dark. Did they fail? Sensors	8	2475	December 31, 2023