My outdoor AQI was pretty bad yesterday. Every time I opened my back door, the Air Purifier would kick on every single time and the AQI on it would shoot up. I would cough when I went outside, stuff was really getting to me. The Air Purifier would clear the air though, and inside I was not coughing.
Interestingly, that particular unit had an AQI dot almost every hour. As you can see I took this screenshot around 10pm, and it logged 17 dots/measurements out of 21 completed hours. So there were only 4 hours it didn’t place a dot yesterday:
I believe those 4 times it didn’t place a dot was because nobody went outside (yes I was going in and out all night long to restart our pool vacuum and do some stuff in my backyard), and so the unit stayed on low fan setting with low AQI for the whole hour.
I had one unit that only had 1 single dot that same day because it sits in my toddler’s room and keeps her room clean, plus it sits on sleep mode (low fan) most of the time.
My 3rd unit had SOME AQI dots, but it seemed to also only be related to when the AQI went up enough to cause it to change to higher fan speeds and then a new dot was reported. I also witnessed dots changing position during the hour if the average AQI changed before the hour ended.
All in all, having some with almost no dots, and just having one with nearly full dots, I have noticed that it most likely logs dots for me if I have it set on auto, and if the AQI gets high enough that it has to change fan speeds. In those conditions, it almost always logs a dot, especially if the AQI is fluctuating or higher for more than just a brief moment before clearing.
I think it mostly ignores logging a dot when the fan speeds stays on low and the AQI stays fairly low for at least most of the hour. But I can definitely confirm that it will log dots almost every hour if there is a reason for it to do so. And no, that unit doesn’t always log lots of dots, it just did that many yesterday because the air was actually bad in my house when we opened the door. It did a great job of clearing the air so I wasn’t coughing (I am very allergic to Weed pollen and coughed outside a lot, but was totally fine indoors.
I do still look forward to Wyze officially updating the firmware to log AQI even when the fan speed and AQI are on low (I would love to see every hour marked like they said they are working on), but it was nice to have a day of near-constant bad AQI so I could indeed verify how well it is really is working.