ROME, ITALY / RankWire.AI / – On Monday, July 20, Italy broadened its most severe heat warning to include 17 cities, following 14 cities being placed under the maximum alert on Sunday. The Italian Ministry of Health issued Level 3 advisories as the nation’s third significant heatwave of the summer of 2026 persisted. The alerts encompass extensive areas of central and southern Italy, including Rome, Naples, and Palermo. These warnings indicate health hazards for the entire population, not solely 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 group. 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 stage.
Italy’s heat-health monitoring system tracks 27 major urban centers and provides forecasts for the upcoming 24, 48, and 72 hours. Level 0 indicates no heat danger, while Level 1 signals conditions that could lead to a heatwave. Level 2 warns of risks for the elderly, young children, and individuals with chronic illnesses. Level 3 is declared when sustained heat could impact healthy and active individuals as well as vulnerable populations.
Severe warnings predominantly affect southern cities
The highest intensity conditions persisted over central and southern Italy and the islands on Monday. Forecasts showed Rome and Florence near 36 degrees Celsius, Naples close to 34 degrees, and Palermo around 37 degrees. Some regions of Sicily and Sardinia continued to experience temperatures exceeding 40 degrees. Northern areas recorded cooler temperatures and more unstable weather, resulting in a stark contrast between the scorching south and stormier conditions across northern sections.
Italy’s Civil Protection Department issued separate yellow alerts for thunderstorms and rainfall in parts of Emilia-Romagna, Lombardy, Marche, and Veneto. These notifications addressed typical weather risks rather than the heat-health alerts. The overlap meant Italy was managing two different hazards on Monday: dangerous heat in many central and southern cities, and storm risks across various northern and Adriatic regions. Local authorities maintained oversight of both situations.
Health advisories focus on peak daytime temperatures
Health officials recommended residents and visitors steer clear of direct sunlight during the hottest parts of the day and avoid strenuous outdoor activities. They emphasized the importance of staying well-hydrated, eating light meals, and keeping indoor environments cool. Extra caution remains essential for seniors, infants, pregnant women, and individuals with heart, lung, or other chronic conditions. Residents are also encouraged to check on relatives or neighbors living alone who may need assistance during extended heat periods.
The increase from 14 red alerts on Sunday to 17 on Monday was due to new maximum warnings for Catania, Messina, and Reggio Calabria. The other 14 cities continued to be at Level 3 for a second consecutive day. Italy regularly updates its heat warnings throughout the summer, enabling residents and local agencies to monitor city-specific health risks. The latest alerts kept Rome, several regional capitals, and major tourist spots under the country’s highest heat warning as the heatwave persisted.