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	17497	March 1, 2023
About the FAQ category FAQ	1	2543	December 29, 2022
Sensor A is downgraded, but Sensor B is stuck at zero Sensors	4	106	September 3, 2025
Q: Can I add a mesh screen to my sensor to keep out bugs and critters? Sensors	0	5279	June 4, 2022
PA-II temp and RH data inconsistency? Sensors	0	35	July 30, 2025
Q: Why isn't my map location being saved? Real-Time Map	0	61	July 24, 2025
Q: Can I calibrate my PurpleAir sensor? Sensors	0	3425	June 4, 2022
Q. Can I calibrate the temperature sensor FAQ	0	73	July 13, 2025
Q. Does PurpleAir have an app? FAQ	12	13220	June 19, 2025
Q: How do the PurpleAir sensors differ, and can I mount them indoors OR outdoors? Sensors	1	2535	June 9, 2025
How Do I Know if my Sensor is Working Properly? FAQ	0	253	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	2606	February 21, 2025
Purchasing Purchasing	0	282	December 13, 2024
Q: Can I Take my Sensor on the Road? Sensors	0	296	December 18, 2024
Tax Exempt Purchasing	0	274	December 13, 2024
Purchase Orders Purchasing	0	1183	August 15, 2022
Payment Methods Purchasing	0	4408	June 2, 2022
Q. How to Request a Refund Purchasing	0	1195	October 20, 2021
Q: What does downgraded mean on the graph? Real-Time Map	0	1427	June 3, 2022
Q: What hostnames and ports do PurpleAir sensors use? Sensors	0	1938	April 20, 2023
Indoor Sources of Particulate Matter (PM) FAQ	0	461	June 4, 2024
Q: What do I do With a Replacement Sensor? Real-Time Map	0	161	September 25, 2024
Is there a package with indoor and outdoor sensors? Purchasing	1	201	September 12, 2024
Micro SD Card Sensors	4	341	July 24, 2024
How do I match PurpleAir's Map with AirNow's Fire and Smoke Map? FAQ	0	1381	July 26, 2023
Q: Can I add data from non-PurpleAir sensors? Real-Time Map	0	2019	June 3, 2022
Q: Why are my sensor's LEDs blue? Sensors	0	1014	January 12, 2024
Q: LCS vs FRM/FEM Sensors	0	146	June 27, 2024
Q: How Do I Calculate My API Call's Point Cost FAQ	0	458	May 29, 2024
Q: Does SD Card Data Get Uploaded to the Map? Sensors	0	203	June 19, 2024