Red alert spreads to all 27 major cities as fourth heatwave peaks

Italy is to place all 27 of its 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 on Wednesday. The red alert, the state's most severe heat warning, comes as temperatures in some areas edge close to 40C.

The measure extends a summer of repeated heat emergencies across the peninsula, with earlier alerts having already strained infrastructure and public health systems. The Guardian noted this is the fourth heatwave of the season, a pattern that has drawn international attention to how southern Europe adapts to a warming climate.

For inland regions like Umbria, the alert carries particular weight. While the 27 cities named are the major urban centres, the hill towns and agricultural valleys of the interior face their own stresses, where elderly populations and outdoor labour make the heat a daily hazard.

The red alert system, operated by the health ministry, signals conditions that can pose a risk to the whole population, not just the vulnerable. The Guardian's report emphasised the geographic sweep of the warning, covering cities as far apart as Trieste on the north-eastern border and Palermo in Sicily, an indication of how widespread this heat event has become.

The summer's repeated heatwaves have already reshaped how visitors and residents experience Italy. The BBC reported this week on advice from experts on coping with the heat, from supermarket visits during cooler hours to night-time tours of major attractions. Those recommendations, aimed at tourists, point to a broader shift in daily rhythms in a country where the afternoon pausa has long been a cultural fixture.

In Umbria, the heat arrives against a backdrop of demographic change that foreign coverage has repeatedly highlighted. The region's hill towns, celebrated for their medieval architecture and Franciscan heritage, are also among Italy's ageing interiors, where a smaller share of young residents means a larger share of the population is vulnerable to extreme temperatures. The Guardian's report did not break down regional impacts, but the national alert gives local authorities a framework for opening cooling centres and adjusting public services.

The heat has also intersected with other strains on the country. The Guardian reported separately that hundreds of people have spent a week sleeping in tents in the Rome heat amid a standoff between the government and local politicians over the future of a prominent squat-turned-community centre, Spin Time, which provides homes, food banks and after-school clubs but has been locked out by authorities. That confrontation, unfolding under red-alert conditions, underscores how the heatwave compounds existing social pressures.

As the week continues, forecasters expect the heat to persist, with the red alert remaining in place across the country's major urban centres. For the inland towns that escape the headlines, the warning is a reminder that the season's fourth heatwave is not merely a city phenomenon but a test of how Italy's slower, older interior copes with a warming climate.