“…Its climate is arid, with winter rainfall (around 75mm annually), average high temperatures in summer (around 42.2ºC), and average high temperatures in winter (21.1ºC) (Cueto et al, 2013). Air pollution in Mexicali is caused by natural sources, emissions from the transport sector, electric power generation, industry, and unpaved streets (Rojas-Caldelas et al, 2013). Also, mineral dust resuspension and prevailing wind speed and direction (dispersion, long-range transport) are associated with high PM10 concentrations (Choi et al, 2006;Carmona et al, 2015) Fig 1.…”