Most cities in Africa’s developing countries are evidently growing leading to significant modification on
climate over the cities that affect human comfort and his environment. Proper urban atmospheric
planning and management are thus key to making cities environmentally sustainable. To achieve all
these, urban weather and climate needs continuous monitoring to offer accurate, reliable and timely
update of any significant changes. This study examined the modification of wind speed and direction by
urbanization process. There is need to understand the modification of wind since the wind spped and
direction greatly affects dispersion of pollutants in the city and distribution of heat which affect human
comfort. The study utilized land surface albedo, decadal population data and daily wind speeds and
direction. The wind was analyzed using wind rose plot and the population and albedo analyzed by
carrying out trend analysis. The urbanization is evidenced by the reducing urban land surface reflectivity
and the increasing population. Wind direction does not show modification by urbanization, however, its
magnitude has exhibited a reduction with time. The reduction in wind speed is harmful to human and
animal comfort and the environment at large. Practical approaches such as proper planning of the cities
to minimize further modification by urbanization have been made. The choice of residential and
industrial places is also emphasized with regard to these findings. The findings of this work are thus
important for multi-sectoral use in the urban centres in Kenya.