FAQ

Sensors This category relates to FAQ questions about PurpleAir sensors. Shipping This sub-category relates to FAQ questions about PurpleAir shipping. Real-Time Map This sub-category is related to FAQ questions about the PurpleAir map. 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.

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	16038	March 1, 2023
About the FAQ category FAQ	1	2451	December 29, 2022
Q. Does PurpleAir have an app? FAQ	12	12133	June 19, 2025
Q: How do the PurpleAir sensors differ, and can I mount them indoors OR outdoors? Sensors	1	2323	June 9, 2025
How Do I Know if my Sensor is Working Properly? FAQ	0	141	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	2415	February 21, 2025
Purchasing Purchasing	0	223	December 13, 2024
Q: Can I Take my Sensor on the Road? Sensors	0	248	December 18, 2024
Tax Exempt Purchasing	0	181	December 13, 2024
Purchase Orders Purchasing	0	1107	August 15, 2022
Payment Methods Purchasing	0	4335	June 2, 2022
Q. How to Request a Refund Purchasing	0	1171	October 20, 2021
Q: What does downgraded mean on the graph? Real-Time Map	0	1381	June 3, 2022
Q: What hostnames and ports do PurpleAir sensors use? Sensors	0	1843	April 20, 2023
Indoor Sources of Particulate Matter (PM) FAQ	0	428	June 4, 2024
Q: What do I do With a Replacement Sensor? Real-Time Map	0	141	September 25, 2024
Is there a package with indoor and outdoor sensors? Purchasing	1	186	September 12, 2024
Micro SD Card Sensors	4	320	July 24, 2024
How do I match PurpleAir's Map with AirNow's Fire and Smoke Map? FAQ	0	1297	July 26, 2023
Q: Can I add data from non-PurpleAir sensors? Real-Time Map	0	1963	June 3, 2022
Q: Why are my sensor's LEDs blue? Sensors	0	904	January 12, 2024
Q: LCS vs FRM/FEM Sensors	0	139	June 27, 2024
Q: How Do I Calculate My API Call's Point Cost FAQ	0	434	May 29, 2024
Q: Does SD Card Data Get Uploaded to the Map? Sensors	0	191	June 19, 2024
SD card max size Sensors	1	151	June 18, 2024
Sensors firmware Sensors	1	379	June 18, 2024
Q: How do I view Outdoor/Indoor/My PurpleAir sensors? Real-Time Map	0	949	June 3, 2022
Q: Should I use the conversion factors on the PurpleAir map? Real-Time Map	4	4642	March 14, 2024
How do I download sensor data? FAQ	3	5384	March 4, 2024
Q: How Do I Download Map Graph Data Real-Time Map	13	4607	January 23, 2024