@smkellat@mastodon.social @paul_ipv6@infosec.exchange @ai6yr@m.ai6yr.org I have always had that problem here which is why I have come to rely on PurpleAir. When I enter my location in Airnow, it gives me a reading of a sensor that's 10 miles away on the other side of the bay. Most of the time the PurpleAir and EPA sensors read about the same but, there have been times when there have been big differences. While PurpleAir sensor readings are not official, I can at least get a bigger picture of what the air quality is like in my area.