Huma-i (HI-100), Advanced Portable Air Quality Monitor Indoor Outdoor Which Measures Particle Matter (PM2.5 and PM10), White

This compact device delivers the goods. It's hard to say if it's very accurate without being able to perform some very tricky tests, but overall I'm satisfied with its accuracy which seems to be good. Not that air quality is that stable anyway. I'd recommend this product to anyone who is concerned about the air they are breathing.

Easy to read, compact size, just nice; however, the screen was scratched when I opened the box, not nice for a new product, looks used.

Simple enough display, and works as it should. I did an elementary accuracy test by taking it outside and testing it then looking up the AQ from the local muni airport. It was within 10 points of accuracy and considering distance and wind, I figured this is close enough. I am in northern California and everything is on fire, smoke is heavy in the air and I wanted to know what my indoor IQ was with all of the shelter in place requirements. All in all, you won't be disappointed.

I love the accuracy! The color system is different than we use here in the States and we had to print out a conversion chart from online. We are very happy with our purchase and recommend this portable unit.

Such a relief to have my own personal pocket-sized air quality tester. During nearby fires, it gave me peace of mind for kids going to school or outdoor activities when online numbers where not consistent.

Works well.

Easy to use and portable. The color scale and emojis makes it convenient to check air quality levels with just a quick glance.

Works pretty well from what I can tell. Whenever I vacuum the it goes up from me turning up all the dust so that’s how I know it works.