Read Data from ThingSpeak Channel

ThingSpeak channel 102698 contains air quality data from a parking garage in Natick Massachusetts. Field 5 is a measure of dust concentration.

[dustData,Timestamps]=thingSpeakRead(102698,'Fields',5,'NumPoints',3000);

Plot the Dust Concentration Over Time

Use plot to visualize the data. Use ylabel and title to add labels to your plot.

plot(Timestamps,dustData);
ylabel('Dust Concentration (ppm)');
title('MathWorks Air Quality Station, East Parking Garage');

During business days, you can see spikes in the dust concentration at times when cars arrive or depart.