The three dimensional plots show the entire relationship between mean maximum temperature and relative humidity with dengue incidence at different lags (Fig. 2). The estimated effects of weather variables on dengue incidence were linear in the current months and were nonlinear along lags. Temperature and humidity were positively associated with dengue incidence and the highest effects were observed at two months lag. The sensitivity analyses indicate that the overall model agreement was 89%, sensitivity was 84% and specificity was 91% (Table 2).