Table 1.

Description of the studied areas in the city of Rio de Janeiro (Tsuruta et al., 2017; Dantas et al., 2020).

District	Coordinates	Population	Characteristics
Irajá	22°49′53.71″S 43°19′36.71″W	461,000	The monitoring station is located in Nossa Senhora da Apresentação Square, approximately 100 m away from two main streets with high flux of light and heavy-duty vehicles. It is also close to Irajá Cemetery, a taxi station and a supermarket with high flux of trucks. The square includes leisure and open walking areas and hosts cultural events.
Bangu	22°53′16.53″S 43°28′15.91″W	413,000	The monitoring station is located in an area with moderate vehicular flow, approximately 20 km from the Atlantic coast and surrounded by the Gericino (altitude 970 m) and Pedra Branca (altitude 1020 m) mountains, which are natural barriers for air circulation. This urban region is considered one of the Rio de Janeiro districts with the highest temperatures.
Tijuca	22°55′30.07″S 43°13′57.33″W	165,000	The monitoring station is located at Saens Peña Square, approximately 100 m from Avenue Conde de Bonfim, a main street with high flow of light-duty vehicles and buses and 200 m away from the mountainous area of Sumare which is covered by tropical rainforest species. The area characterized by commercial activities and a high flow of vehicles and people because of a terminal subway station, as well as many restaurants, bars and leisure activities.