Bhut Jolokia an important cash crop of North eastern part of India. However, insect pest dominant factor causing damage to the crop among the insect pest thrips and mites are the important one. Weather plays a significant role in appearance of these two important pests and it was observed that highest incidence of thrips in 4^th week of March in both 2018 and 2019, while mite population reaches its peak during 4^th week of March in 2018 and 2^nd week of April, 2019, respectively. Multiple regression analysis Reveled that weather parameter plays crucial role in total variation in the population of thrips by 58.70 and 50.60 per cent, while in case of mite it contributed for 54.10 and 47.70 per cent in Bhut Jolokia during 2017-18 and 2018-19. Correlation study on influence of weather factor on population build up revealed that Av. RH had significant negative effect on both thrips (-0.661** and -0.576**) and mite (-0.618** and -0.527**) while, maximum temperature had significant positive effect population buildup of both thrips and mite (0.408* and 0.504*) during 2018-19 only. Among the weather factors average relative humidity had the profound effect in suppressing the population growth of thrips and mites infesting Bhut Jolokia.