Italy's fourth heatwave puts all 27 major cities on red alert

Italy is to place all of its 27 major cities, from Trieste in the north to Palermo in the south, under the highest heat alert as the fourth heatwave to hit the country this summer intensifies, the Guardian reported. The red alert comes as temperatures in some areas edge close to 40C, extending a summer of successive heat events that have strained infrastructure and public health systems across the country.

The move follows a pattern of escalating heat warnings throughout July and August. Earlier this month, Italy's health ministry issued red alerts for a dozen cities as the third heatwave peaked, and the current fourth wave is proving more intense, according to the Guardian's coverage. The highest alert level signals a health risk for the entire population, not just the elderly or those with pre-existing conditions, and triggers measures including extended hours for public cooling centres and increased staffing in emergency departments.

For Basilicata, a region with a continental climate in its mountainous interior and Mediterranean conditions along its short Tyrrhenian and Ionian coasts, the heat carries particular weight. Potenza, the regional capital sitting at nearly 800 metres above sea level, typically offers relief from the coastal heat, but this summer's sustained temperatures have eroded that advantage. The region's ageing population — Basilicata has one of the oldest demographic profiles in Italy — faces heightened vulnerability during prolonged red-alert periods.

The red alert covers cities as far apart as Trieste on the Adriatic and Palermo in Sicily, reflecting the breadth of the current heat event. According to the Guardian, the fourth heatwave is intensifying as a high-pressure system parks over the Mediterranean, drawing hot air across the peninsula. Forecasters expect the alert to remain in force through the week, with little relief expected at night in urban areas where the urban heat island effect keeps temperatures elevated.

The heat has already reshaped daily life across Italy. The BBC reported this week that experts are recommending night-time tours and supermarket visits during the coolest hours as practical ways to cope with the conditions. Museums in Rome and Florence have adjusted opening hours, and some northern cities have extended public pool hours to offer respite. The advice reflects a broader adaptation to a climate pattern that is making Italian summers progressively hotter.

For southern regions like Basilicata, the heat intersects with long-running vulnerabilities. Agriculture, a cornerstone of the regional economy, is under stress from both high temperatures and the drought that has tightened across Italy this summer. The Guardian's coverage of the heatwave notes that water restrictions have been introduced in several regions, and farmers in the south are reporting early harvests and reduced yields. Basilicata's wheat and olive production, vital to local livelihoods, face an uncertain season as the heat persists.

The regional government has activated its heat emergency protocols, opening cooling centres in Potenza and Matera and extending hours at public parks and fountains. Matera, the UNESCO-listed city carved into limestone, faces a particular challenge: its stone buildings, prized for their thermal mass, retain heat overnight, making the city uncomfortable for residents and tourists alike during prolonged alerts. The city's tourism-dependent economy must balance visitor expectations against the reality of a heat event that shows no sign of abating.