Does it indicate different types of malfunction when a sensor is gray on the map versus when it doesn’t show up at all?
2 Likes
Hi @ckastely
Sensors never technically disappear from the map. They will go gray, as you have noted, which happens because a sensor has gone offline, or if all channels have become downgraded.
However, there is a map setting that affects the visibility of gray dots. By default it is set to 7 days. Which means that if a sensor has been gray for more than 7 days, you wont see it on the map. More information is available here: Does PurpleAir Remove Sensors From The Map?.
Please let me know if you have any questions.
Thanks I found it when I extended from 7-days to all time. However, 3 days ago it was showing up on the map and it said it had only been inactive for 2days. Now it says that it hasn’t been active for 43 days. Have you had issues like this before?
Hi @ckastely
Could you please supply the name of the sensor you’re looking at here or in an email to contact@purpleair.com?