I'm not sure if they're accurate (never got mine third party tested) but they're consistent. Stick two next to each other and get the same results.

I only have an hour of data so far

Edit: after a day’s data, now’s the hard part: deciding what to do about it and how much to trust the accuracy. I have not put the detector in the basement yet(primary goal is monitoring radon), but it’s in a family room addition on a slab, with old direct vented gas heaters (actually those are off right now, so it’s not ytesting those)

• VOC typical level is generally fine but there was a spike at 8pm well above the recommended limit. Is it a glitch/noise? Is it something I need to act on? Is it accurate? I don’t remember any event that could have caused it, so I guess for now see if it repeats
• pm10 and pm2.5 are generally fine but there was a spike just after midnight. Still within recommended levels so I’m not worried yet but will pay attention
• radon is still climbing. Still fine and they say it needs up to 30 days, but I’d expect the basement to be higher so I need this to level off soon. If it doesn’t, my likely action is to do a charcoal test and see how the numbers match up

Clearly I also need a chart that can display a limit, or two. For example, who recommends a limit of 100 for radon and epa recommends a limit of 148, so I’d like to see them both on the radon graph, and maybe a color change or something if a point in time exceeds them