ROME, ITALY / RankWire.AI / – Italy has escalated its maximum heat warning to encompass 17 cities on Monday, July 20, following a prior list of 14 cities issued on Sunday. The Italian Ministry of Health issued Level 3 alerts as the nation continues to experience its third significant heatwave of the summer of 2026. These alerts extend across much of central and southern Italy, including Rome, Naples, and Palermo, signaling health risks to the entire population, not just vulnerable groups.
The red alert list on Sunday 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 under 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 urban centers and provides forecasts for the next 24, 48, and 72 hours. Level 0 indicates no heat risk, Level 1 signals conditions that could precede a heatwave, Level 2 warns of danger for the elderly, children, and those with chronic illnesses, and Level 3 signifies prolonged heat affecting both healthy individuals and vulnerable populations.
Intense heat warnings affect southern cities across Italy
On Monday, the most extreme conditions persisted over central and southern Italy and its islands. Forecasts projected temperatures near 36 degrees Celsius in Rome and Florence, approximately 34 degrees in Naples, and about 37 degrees in Palermo. Parts of Sicily and Sardinia continued to experience temperatures exceeding 40 degrees. Meanwhile, northern regions experienced cooler temperatures and more unstable weather, leading to a clear divide between the heat in the south and storm activity in the north.
Italy’s Civil Protection Department issued separate yellow alerts for thunderstorms and rain in Emilia-Romagna, Lombardy, Marche, and Veneto. These warnings pertain to regular weather hazards rather than the heat-health alerts. Consequently, Italy is managing two concurrent threats: dangerous heat across many central and southern regions and storm risks in parts of the north and along the Adriatic. Authorities remain vigilant, monitoring both situations closely.
Public health advice focuses on peak heat hours
Health officials recommended avoiding direct sunlight during peak hours and limiting strenuous outdoor activities. They emphasized the importance of staying hydrated, opting for light meals, and maintaining cool indoor environments. Special care should be given to older adults, infants, pregnant women, and individuals with heart, lung, or chronic conditions. Residents are also encouraged to check on neighbors or relatives who live alone and might be vulnerable during prolonged high temperatures.
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 remained at Level 3 for a second consecutive day. Italy regularly updates its heat warnings during the summer, enabling residents and local authorities to stay informed about city-specific health risks. The latest alerts kept Rome, several regional capitals, and major tourist hubs under the country’s highest heat warning as the heatwave continued.