This study aims at investigating the urban bioclimatic discomfort index of residents .in Calabar. The problem statement derives from the identification of residents health implication of the Urban Heat Island (UH1) impact on residents based on investigation carried in other similar cities of the wor1d. For effective data collection, landscape landcover types would be identified and categorized. Equally, residential areas were designated into city locales or clusters on the basis of? planning, architectural design and mostly contiguity. Population categories employed would be both biophysical and socio cultural. Instruments for data collection would be selected in line with attributes of the population. Thus, questionnaire instruments would be used to elicit information from residents on the basis of their sensitivity to the heat discornfort incidence. Also, heat variation according to landscape/landcover categories would. be detected through the use of thermometers mounted on improvised Stevenson Screen stationed at purposively sampled locations. Global positioning system coordinates recording would be taken for each point. The data collected was analyzed based on non-parametric and parametric statistics. The findings aim at identified the differences in heat sensitivity among residents according to age, two hypothesis were tested using the parameter of age. Hypothesis 1 analysed heat sensitivity within age brackets 6-20 years of age. Hypothesis11 analysed heat sensitivity within the age brackets 21-50 years of age. Following the results the null hypothesis was accepted for hypothesis 1 indicating that there is no significant difference in the heat densitivity index for age category 6-20 years of age. While for hypothesis II the null hypothesis was upheld indicating that there is a significant variation in the heat densitivity among the age category 21-50 years.