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	20406	March 1, 2023
About the FAQ category FAQ	1	2677	December 29, 2022
Running a PurpleAir sensor off a power bank (daily charging setup) Sensors	0	12	June 25, 2026
Q: What hostnames and ports do PurpleAir sensors use? Sensors	2	2248	November 7, 2025
I can't seem to log into PA, or see details (SN, etc) of my owned sensor Sensors	0	104	September 9, 2025
Sensor A is downgraded, but Sensor B is stuck at zero Sensors	4	234	September 3, 2025
Q: Can I add a mesh screen to my sensor to keep out bugs and critters? Sensors	0	5579	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	136	July 24, 2025
Q: Can I calibrate my PurpleAir sensor? Sensors	0	3846	June 4, 2022
Q. Can I calibrate the temperature sensor FAQ	0	167	July 13, 2025
Q. Does PurpleAir have an app? FAQ	12	14500	June 19, 2025
Q: How do the PurpleAir sensors differ, and can I mount them indoors OR outdoors? Sensors	1	2743	June 9, 2025
How Do I Know if my Sensor is Working Properly? FAQ	0	468	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	2999	February 21, 2025
Purchasing Purchasing	0	370	December 13, 2024
Q: Can I Take my Sensor on the Road? Sensors	0	353	December 18, 2024
Tax Exempt Purchasing	0	411	December 13, 2024
Purchase Orders Purchasing	0	1409	August 15, 2022
Payment Methods Purchasing	0	4605	June 2, 2022
Q. How to Request a Refund Purchasing	0	1343	October 20, 2021
Q: What does downgraded mean on the graph? Real-Time Map	0	1529	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	206	September 25, 2024
Is there a package with indoor and outdoor sensors? Purchasing	1	237	September 12, 2024
Micro SD Card Sensors	4	394	July 24, 2024
How do I match PurpleAir's Map with AirNow's Fire and Smoke Map? FAQ	0	1445	July 26, 2023
Q: Can I add data from non-PurpleAir sensors? Real-Time Map	0	2118	June 3, 2022
Q: Why are my sensor's LEDs blue? Sensors	0	1188	January 12, 2024
Q: LCS vs FRM/FEM Sensors	0	181	June 27, 2024