The PurpleAir Map supports a powerful graph feature that allows you to easily view data from sensors. This is useful when looking to understand the recent history of a device and its air quality readings. This article outlines what you’re able to do with the graph. This article will use terms and …

Thanks for posting this description. Would be great to see a link to this from the map page graph section itself, I don’t think most initial or casual users are going to know to look in the forums for this info. Maybe also a note about the download icon hidden in the bottom left corner of the map.

Hi @jcothran , this is a great idea. I will input it as a feature request to be looked into.

can you tell me what A & B is ? What is the meaning of those two ?

Hi @CDVTA , PA-II edition sensors contain two laser counters that read the air quality independently. If you select a sensor on the PurpleAir map, you will likely see two lines that appear on the graph. Each of these lines represents a single channel in that sensor. They are named channel A and chann…

Thanks, this is useful! I have some suggestions for the UI, and a question. Suggestion 1: It is very non-intuitive that the way to get the drop down menus to show up is to click in the tiny grey space above the plot. Maybe you could have words to click to get it to show up. Also, it would be ni…

Oh, it would also be nice to have a single button to click to add the data from all the sensors within the current map zoom to my plot. Because somehow they sometimes get unselected on their own and it is tedious to add one by one.

what is the value listed underA and B mean

how the average of the following data is 30 Average AQN1 A AQN1 B 30.8 64.6335338 62.0530958 what about data for 2021, when downloading

Many PurpleAir sensors use two laser counters to conduct independent measurements. These are referred to as “Channel A” and “Channel B.” Data can be labeled to indicate which channel it’s from. Could you provide the sensor index, averaging period, data layer, and time that you obtained the provided…

How to Use the Map Graph

Real-Time Map

Topic		Replies	Views
PurpleAir Map Guide Real-Time Map	7	64440	May 1, 2025
Q: How Do I Download Map Graph Data Real-Time Map	12	6055	October 25, 2023
Graph For Past Year's AQI Needed Data	5	403	May 29, 2024
Historical data graphs for one sensor? Community Projects	3	669	September 26, 2023
Discrepancy between current value on dot and in graph Real-Time Map	5	854	October 20, 2022

How to Use the Map Graph

Related topics