Originally published at: I Tested the Purpleair Pixel. Here’s the Good and the Bad
Over the past couple of years, it feels like air quality monitoring has been going through the same rapid shift we’re seeing in a lot of tech right now. Everything is getting smaller, more efficient, and more integrated. Now, air quality monitoring is suddenly part of that trend. Sensirion is pushing ultra-compact CO₂ sensors, and now Bosch has stepped in with something that immediately caught my attention: a PM2.5 sensor that looks nothing like what we’ve been using for the past decade. Most low-cost PM sensors are still built around the same general idea: a small optical chamber, a fan,…