The folks at Awair make a nice line of reasonably accurate monitors for common things (CO2, VOC estimate, temperature, humidity, etc.) with lots of historical d

The folks at Awair make a nice line of reasonably accurate monitors for common things (CO2, VOC estimate, temperature, humidity, etc.) with lots of historical data and good smoothing. They also have great support if you suspect a faulty unit. By contrast, you can get a more professional counter from Dylos, but then you’re on your own for all the work beyond it just being a sensor. That said, I’m more confident in the pm2.5 and pm10 data from a Dylos than the plug-in socket Awair.