ROME, ITALY / RankWire.AI / – Italy has increased its most severe heat warning to encompass 17 cities on Monday, July 20, following a warning level being issued to 14 cities on Sunday. The Italian Ministry of Health announced Level 3 alerts as the nation continues its third major heatwave of the summer of 2026. These alerts affect large portions of central and southern Italy, including Rome, Naples, and Palermo. They indicate health hazards for the entire population, not just vulnerable groups.
The red alert list on Sunday featured Bari, Campobasso, Civitavecchia, Florence, Frosinone, Genoa, Latina, Naples, and Palermo. Perugia, Pescara, Rieti, Rome, and Viterbo made up the 14-city warning. On Monday, the bulletin added Catania, Messina, and Reggio Calabria, bringing the total to 17. No cities were under an orange heat alert on Monday. Ancona, Bolzano, and Cagliari remained at yellow, which signifies a pre-alert status.
Italy’s heat-health monitoring system oversees 27 key cities and issues forecasts for the upcoming 24, 48, and 72 hours. Level 0 indicates no heat danger; Level 1 suggests conditions that might lead to a heatwave; Level 2 warns of risks for elderly individuals, young children, and those with chronic illnesses; and Level 3 signals that extended heat can impact both healthy and vulnerable populations.
Severe alerts primarily affect southern cities
On Monday, the most severe conditions persisted over central and southern Italy and the islands. Forecasts predicted temperatures near 36 degrees Celsius in Rome and Florence, around 34 degrees in Naples, and close to 37 degrees in Palermo. Parts of Sicily and Sardinia continued to experience temperatures exceeding 40 degrees. Meanwhile, northern regions reported lower temperatures and more unpredictable weather, resulting in a stark contrast between the intense heat in the south and storm activity across some northern areas.
Italy’s Civil Protection Department issued separate yellow alerts for thunderstorms and rainfall in parts of Emilia-Romagna, Lombardy, Marche, and Veneto. These warnings addressed typical weather risks rather than the heat-health alerts. Consequently, Italy is contending with two distinct hazards: dangerous heat in many central and southern cities and storm threats in certain northern and Adriatic regions. Local authorities are actively monitoring both situations.
Health advice focuses on peak daytime temperatures
Health officials recommended residents and visitors avoid direct sunlight during the hottest parts of the day and minimize strenuous outdoor activities. They also encouraged regular hydration, choosing light meals, and keeping indoor environments as cool as possible. Extra caution is advised for the elderly, infants, pregnant women, and individuals with heart, lung, or other chronic conditions. Residents should also check on neighbors or relatives living alone who might need assistance during prolonged heat periods.
The increase from 14 red alerts on Sunday to 17 on Monday reflects newly issued maximum warnings for Catania, Messina, and Reggio Calabria. The other 14 cities maintained Level 3 alerts for a second consecutive day. Italy continues to update its heat warnings throughout the summer, enabling residents and local authorities to track city-specific health risks. The latest alerts kept Rome, several regional capitals, and major tourist destinations under the country’s highest heat warning as the heatwave persisted.