Why Ćuprija is often the hottest city in Serbia

While larger cities often experience higher temperatures due to urban heat island effects, the Serbian town of Ćuprija frequently stands out as the hottest location in the country. This phenomenon is not primarily caused by asphalt and concrete, but rather by Ćuprija's specific geographical setting.

Located in the Pomoravlje region along the Velika Morava river, Ćuprija is nestled in a valley encircled by the Kučajske mountains to the east and west. When warm air masses approach, they are forced to rise over these mountain ranges. As the air descends on the other side into the lower-lying valley, it compresses and heats up further. This process, combined with weak air circulation within the valley, allows warm air to linger above the town for extended periods, creating what is often referred to as a "heat dome."

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The reason why Ćuprija is often the hottest city in Serbia is not (only) asphalt.

This unique meteorological condition explains why Ćuprija often registers record-breaking temperatures during the summer months. Conversely, during winter, the same valley topography can trap cold air, leading to very low temperatures and radiation fogs.

Smederevska Palanka, situated in a similar geographical position in the Jasenica river valley and surrounded by hills, experiences comparable temperature patterns. In fact, Smederevska Palanka officially recorded Serbia's highest-ever temperature of 44.9 degrees Celsius on July 24, 2007. On that same day, Ćuprija recorded a slightly cooler 44.6 degrees Celsius, underscoring the localized impact of these topographical features on temperature.

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Warm air rises along the mountain side, crosses the mountain top, and then descends on the other side, reaching a lower altitude and an area of higher air pressure, where it heats up further due to compression.