The paper discusses the long-term variability of maximum (Tmax) and minimum (Tmin) air temperature variations, both occurring from one day to the next and over several consecutive days (3-4), in Krakow (Poland, Central Europe) from 1826 to 2015 (i.e., over a period of 190 years). The authors analyzed the seasonal variability of short-term variations in air temperature, looking at the most significant changes (±10^{\circ}C), as well as at their dynamics and trends over the analyzed multi-annual period. A clear decrease has been observed both in the values of short-term Tmax and Tmin variations and in the number of cases with their significant fluctuations. The decrease has been gradual, without clear abrupt changes to the overall trend. The greatest short-term variations in temperature were most frequent in the cooler half-year, being smaller and less frequent in the summer months. If the observed trend persists, in the upcoming years we can expect a further decrease in the dynamics of variations in thermal conditions, i.e., short-term variations in temperature may more frequently be small, i.e., ±0.1-4.0 ^{\circ}C. However, it is worth noting that Tmax more frequently increased from one day to the next and over several consecutive days, while Tmin more frequently decreased. The reasons for the analyzed changes remain unclear. It seems that natural factors, mainly including the advection of air masses, have a significant impact on short-term variations in air temperature, coupled with local factors, which have been strengthened by the human impact on the environment, including the urban heat island.