July 11, 2019 - Sao Paulo, Brazil - Dry and polluting weather is seen from Avenida Paulista, central region of the city of SÃ£o Paulo, on the morning of this Thursday, 11. The morning began with clear sky and low temperature in the city of SÃ£o Paulo, maximum reaches 24 Â° C and the lowest humidity rates are close to 30%. Dry air makes it difficult to disperse pollutants, which impairs air quality in large urban centers. July 11, 2019. (Photo: FÃ¡bio Vieira/FotoRua) (Credit Image: © Fotorua/NurPhoto via ZUMA Press)