Naples braces as Italy puts 27 cities on highest heat 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 on Wednesday. The red alert covers every major urban centre, edging temperatures in some areas close to 40C.

For Campania, the alert lands at a moment of particular strain. Naples and its surrounding towns are still counting the damage from last week's magnitude 4.7 earthquake near Pozzuoli, which injured 26 people and damaged buildings in the Campi Flegrei volcanic area, according to Euronews footage of the aftermath. The Italian government has since released €100 million in aid for quake-hit areas, the civil protection minister said on Tuesday.

The combination of extreme heat and recent seismic damage creates a double burden for a region already known for its ageing housing stock and dense urban fabric. The Guardian's report notes the red alert is the highest level on Italy's heat warning system, triggering measures for vulnerable populations.

The red alert system, which the Guardian described as covering all 27 major cities, is designed to protect the elderly, the sick and outdoor workers during the most intense heat. In Naples, where much of the economy relies on street-level commerce and tourism, the practical effects are immediate: markets, construction sites and the city's famed open-air life all slow under the midday sun.

The timing compounds the quake's aftermath in Pozzuoli, where residents have been dealing with damaged buildings and aftershock fears. The BBC's separate guide on avoiding the worst of the Italian heat suggested supermarkets as cooling refuges and recommended night-time tours as a way to keep tourism alive during the alerts — advice that resonates in a city whose archaeological sites, including Pompeii and Herculaneum, draw visitors into exposed daytime heat.

The heatwave also raises questions about energy demand across the south, where air conditioning use spikes. The Guardian's live coverage of the wider European heatwave noted the strain on power systems, with Romania detonating a rock on the Danube to increase water flow for cooling a nuclear plant — a reminder that the heat is a continental phenomenon, not merely an Italian one.

For Campania's authorities, the immediate task is protecting the most vulnerable while keeping essential services running. The red alert is expected to remain in place through the week, with temperatures in some areas close to 40C, according to the Guardian. Local health services in Naples have historically used heat alerts to open cooling centres and check on isolated elderly residents, though the foreign press has not detailed specific measures for this event.

The broader pattern is one the world has watched all summer: Italy's tourism economy, so dependent on summer visitors, must now adapt to a climate that makes the season's core hours increasingly inhospitable. The BBC's expert advice on night-time visits and supermarket cooling is already being adopted in some cities, and Naples — with its evening passeggiata culture — may find its traditional rhythms oddly suited to the new reality.