FAQ

Sensors This category relates to FAQ questions about PurpleAir sensors. Shipping This sub-category relates to FAQ questions about PurpleAir shipping. 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	20471	March 1, 2023
About the FAQ category FAQ	1	2685	December 29, 2022
Running a PurpleAir sensor off a power bank (daily charging setup) Sensors	0	26	June 25, 2026
Q: What hostnames and ports do PurpleAir sensors use? Sensors	2	2253	November 7, 2025
I can't seem to log into PA, or see details (SN, etc) of my owned sensor Sensors	0	106	September 9, 2025
Sensor A is downgraded, but Sensor B is stuck at zero Sensors	4	236	September 3, 2025
Q: Can I add a mesh screen to my sensor to keep out bugs and critters? Sensors	0	5584	June 4, 2022
PA-II temp and RH data inconsistency? Sensors	0	65	July 30, 2025
Q: Why isn't my map location being saved? Real-Time Map	0	140	July 24, 2025
Q: Can I calibrate my PurpleAir sensor? Sensors	0	3856	June 4, 2022
Q. Can I calibrate the temperature sensor FAQ	0	168	July 13, 2025
Q. Does PurpleAir have an app? FAQ	12	14544	June 19, 2025
Q: How do the PurpleAir sensors differ, and can I mount them indoors OR outdoors? Sensors	1	2750	June 9, 2025
How Do I Know if my Sensor is Working Properly? FAQ	0	471	April 11, 2025
Q: Can I set my PurpleAir sensor to private, and how do I view a private sensor on the map? Real-Time Map	9	3002	February 21, 2025
Purchasing Purchasing	0	374	December 13, 2024
Q: Can I Take my Sensor on the Road? Sensors	0	353	December 18, 2024
Tax Exempt Purchasing	0	415	December 13, 2024
Purchase Orders Purchasing	0	1415	August 15, 2022
Payment Methods Purchasing	0	4605	June 2, 2022
Q. How to Request a Refund Purchasing	0	1348	October 20, 2021
Q: What does downgraded mean on the graph? Real-Time Map	0	1530	June 3, 2022
Indoor Sources of Particulate Matter (PM) FAQ	0	537	June 4, 2024
Q: What do I do With a Replacement Sensor? Real-Time Map	0	207	September 25, 2024
Is there a package with indoor and outdoor sensors? Purchasing	1	238	September 12, 2024
Micro SD Card Sensors	4	395	July 24, 2024
How do I match PurpleAir's Map with AirNow's Fire and Smoke Map? FAQ	0	1447	July 26, 2023
Q: Can I add data from non-PurpleAir sensors? Real-Time Map	0	2119	June 3, 2022
Q: Why are my sensor's LEDs blue? Sensors	0	1192	January 12, 2024
Q: LCS vs FRM/FEM Sensors	0	182	June 27, 2024