Simplified empirical formulae have been used to compute radiative, soil heat, latent heat and sensible surface heat fluxes based on routine meteorological surface observations. These empirical formulae enable us to compute these fluxes without involving too many complicated input parameters. Computations have been performed for the four representative months of the season of a year for the city of Delhi. On comparison, net radiation and latent heat flux show good agreement with their observed values. Furthermore, a sensitivity test performed by varying turbidity the atmosphere shows that a two-fold increase in turbidity may cause a change of 15-50 change of the net radiation at various times of the day.