“…The assessment of PET in July and August, shows that the July averages are higher than August during the daytime in all the measurement points ( Figure 5) with PET ave.July = 41 • C, PET ave.August = 36.2 • C. This decrease in August is mainly due to the wind velocity, which influence the level of the heat stress. PET values were similar in the three measurement points (7,8,9) of the downtown 11 December neighborhood (Table 1) between July and August during the entire daytime where PET ave.July = 38.8 • C, PET ave.August = 38.7 • C. PET values are lower in August than July in most of other measurement points (1,2,3,4,5,6,10,11,12) (Table 1) A significant difference, between PET and Tmrt values in the second period (9:00 a.m., 1:00 p.m., 5:00 p.m.) ( Figure 6) was found in July and August, relative likely to the elevation of air temperature PET averages obtained at the points (1,2,3,4,5,6,10,11,12) are higher than (7,8,9) points in July and lower in August ( Figure 5). The highest value of PET, in July, was observed at the (3) point of the Old Lichana, with a PET max = 55.1 • C at 1:00 p.m.…”