Introduction In September 2024, we published an article about PM2.5 and how the EPA correction algorithm improves the accuracy of AirGradient’s monitors. We observed that our sensors, the PMS5003 from Plantower, systematically overestimate PM2.5 when concentrations are above 10 to 20 µg/m3. The algorithm from the EPA ( equation 4) does a great job of bringing down the high readings. Meanwhile, we have implemented the algorithm for our outdoor and indoor monitors, as explained here. Today...
