Low-cost air pollution monitors have many advantages, such as size and price. On the other hand, these monitors provide estimates for PM2.5 with higher uncertainties compared to expensive reference monitors. We are aware of these uncertainties, and hence, we have initiated a global co-location project, where we sent our Open Air outdoor monitors to more than 20 sites around the globe. Our invaluable local partners have set up these monitors next to their reference stations and made their refe...
