1. A processor-implemented method of guiding mobility-impaired pedestrians, the processor-implemented method comprising: a processor receiving a plurality of mobile tracking readings from each of multiple mobility assistance devices, wherein a tracking device is affixed to each of the multiple mobility assistance devices to generate the plurality of mobile tracking readings; the processor identifying a plurality of pedestrian routes taken by the multiple mobility assistance devices to a desired destination, wherein the plurality of pedestrian routes are identified by the plurality of mobile tracking readings generated by tracking devices affixed to the multiple mobility assistance devices; the processor identifying multiple optimal pedestrian routes from the plurality of pedestrian routes, wherein said multiple optimal pedestrian routes are identified as having more mobile tracking readings than other pedestrian routes from the plurality of pedestrian routes; the processor associating a first local weather condition to times during which mobile tracking readings were taken for a first optimal pedestrian route, wherein the first optimal pedestrian route is from the multiple optimal pedestrian routes; the processor associating a second local weather condition to times during which mobile tracking readings were taken for a second optimal pedestrian route, wherein the second optimal pedestrian route is from the multiple optimal pedestrian routes; the processor identifying a real-time local weather condition for a current mobility-impaired pedestrian traveling to the desired destination; the processor, in response to determining that the first local weather condition and the real-time local weather condition are substantially similar, selecting the first optimal pedestrian route over the second optimal pedestrian route for transmission to the current mobility-impaired pedestrian; and the processor transmitting directions that describe said first optimal pedestrian route, to the desired destination, to the current mobility-impaired pedestrian for traveling to the desired destination.