This study used homogenised mean, maximum, and minimum daily temperatures from 12 stations located in Brno, Czechia, during the 2011–2020 period to analyse heat waves (HW) their impact on canopy urban island (UHI). HWs were recognized as at least three consecutive days with Tx ≥ 30 °C urban–rural intra-urban differences measures analysed. To express contribution UHI, we calculated UHI intensiti...