For about a week or so, readings nationwide, even into Canada and elsewhere zeroed out or way too low readings pretty much everywhere. Today, 3/10/26 still showing low erroneous readings. Both on phone and desktop. How can this be resolved?
@Airboy Just curious - what reference data are you comparing against to know that the readings are too low? The air quality map from the EPA seems to be very similar to the purpleair map:
EPA has been compromised and subjected to political influence, has eliminated environmental rules and falsified environmental reports, which referenced scientists in report denied their input to their statements. All readings on PurpleAir map zeroed or went extremely low, including mine, both inside and outside about a week ago. Checked with other equipment next to mine and around the area. Also communicated with friend in Canada and other US states. I’m sure that any influence by the politically compromising won’t admit to it. Was hoping it was in PurpleAir algorithms or program that updated or something. At any rate readings have generally been lowered all of a sudden and effected by something. Trust EPA or their data at own risk. Many won’t. I’ll just have to get independent equipment for just my local area I guess, but hope we can get an independent EPA and our environmental rules back in the future.
For what it’s worth, purpleair sensors have a local API to retrieve data directly, without going through their cloud service or web site. It’s documented at Sensor JSON Documentation . I use this for my own local dashboard, and haven’t seen any discrepancies with what’s being shown on the website, either EPA or Purpleair - it’s just been beautiful spring weather with low (but not zero) AQI’s, which is normal here.
One thing to be somewhat wary of these days is there’s many voices out there on the internet trying to panic you to increase your engagement with their sites, or to push their own agendas.