We evaluate the InMAP predicted total PM2.5 concentrations against measured total PM2.5 concentrations. There are 53 global cities that have both InMAP predictions and measured data collected by ; results are shown in the first panel of Figure . The r 2 is 0.47 and bias and error are listed in Table . For the same cities, the model-measurement agreement is better for GEOS-Chem than for InMAP (r 2 = 0.57; Figure , second panel) and GEOS-Chem has lower error but larger bias (Table ).