ROME, ITALY / RankWire.AI / – Italy has increased its most severe heat alert to include 17 cities on Monday, July 20, following a Sunday when 14 cities were under the maximum warning. The Italian Ministry of Health issued Level 3 alerts as the nation faced its third significant heatwave of summer 2026. The alerts encompass much of central and southern Italy, including Rome, Naples, and Palermo. They serve as a warning of health dangers for the entire population, not just vulnerable groups.
On Sunday, the red alert list included Bari, Campobasso, Civitavecchia, Florence, Frosinone, Genoa, Latina, Naples, and Palermo. Perugia, Pescara, Rieti, Rome, and Viterbo made up the 14-city group. By Monday, Catania, Messina, and Reggio Calabria were added, bringing the total to 17. No city was designated with an orange heat alert on Monday. Ancona, Bolzano, and Cagliari remained at yellow, indicating pre-alert conditions.
Italy’s heat-health monitoring system tracks 27 major cities and provides forecasts for the next 24, 48, and 72 hours. Level 0 indicates no heat risk, while Level 1 signals conditions that could lead to a heatwave. Level 2 alerts of danger for elderly individuals, young children, and those with chronic health issues. Level 3 is issued when extended periods of heat threaten both healthy, active populations and vulnerable groups.
Maximum heat warnings cover southern cities
The highest temperatures persisted over central and southern Italy and the surrounding islands on Monday. Forecasts indicated Rome and Florence approaching 36 degrees Celsius, Naples near 34, and Palermo close to 37. Areas of Sicily and Sardinia continued experiencing temperatures exceeding 40 degrees. Northern regions recorded cooler readings and more variable weather, creating a stark contrast between the intense southern heat and storm activity across parts of the north.
Italy’s Civil Protection Department issued separate yellow alerts for thunderstorms and rainfall in parts of Emilia-Romagna, Lombardy, Marche, and Veneto. These notices addressed typical weather hazards rather than the heat-specific health warnings. Consequently, Italy was managing two distinct threats on Monday: dangerous heat across many central and southern cities, and storm risks in several northern and Adriatic areas. Local authorities maintained ongoing surveillance of both situations.
Health advisories focus on peak daytime temperatures
Health officials recommended residents and visitors avoid direct sunlight during peak hours and limit strenuous outdoor activities. They emphasized the importance of drinking water regularly, eating light meals, and keeping indoor environments as cool as possible. Special care remains crucial for elderly individuals, infants, pregnant women, and those with heart, lung, or other chronic illnesses. 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 issued for Catania, Messina, and Reggio Calabria. The remaining 14 cities stayed at Level 3 for a second consecutive day. Italy continues to update its heat advisories throughout the summer, enabling residents and local authorities to monitor city-specific health risks. The latest alerts kept Rome, several regional capitals, and major tourist hotspots under the highest heat warning as the heatwave persisted.