A blanket of gray clouds, cold temperatures, and "a few drops" of rain: the forecast for the Metropolitan Region and central area.

This Monday, May 11th, the Metropolitan Region woke up to clear skies and an environmental alert for "poor ventilation." It will be a hot day, with temperatures approaching 30°C in various parts of the region. However, the weather will change starting tomorrow, Tuesday the 12th: according to the forecast from the Chilean Meteorological Directorate (DMC), temperatures will take a drastic turn, and more autumnal days will begin. Starting early tomorrow, the sky will be covered in clouds—ranging from partly cloudy to overcast—across the entire region, a situation that will extend even until Friday the 15th. A similar scenario is expected in much of the central zone, including Valparaíso, O'Higgins, Maule, Ñuble, and Biobío. This event, or "cloud cover," will allow for better ventilation in the Metropolitan Region, thus alleviating the environmental consequences in the region. Furthermore, according to some meteorologists, some rain could appear between the cloud cover. This is what is known about the forecast for this week in the central zone. Forecast: Rain and cold in the Metropolitan Region and central zone. The temperature, which will reach 30°C, will drop sharply to around 20°C in the Metropolitan Region starting tomorrow, Tuesday. A cloud cover will arrive early in the morning, bringing relief to the entire region for the next few days. In other words, it will be gray days with a lot of cloud cover throughout the week. Temperatures will be declining. On average, the Metropolitan Region will have a high of only 21°C on Monday, 18°C on Tuesday, 17°C on Thursday, and 16°C on Friday. And on Saturday, temperatures could drop to as low as 12°C. The Valparaíso Region will also have cold days with cloud cover. Temperatures will average between 14 and 15°C until Friday, except for Los Andes and San Felipe, which will have temperatures above 20°C and clear skies. The O'Higgins Region will also have overcast skies and cooler temperatures, with a maximum of 20°C. The cloud cover will be more partial. In contrast, the Maule Region is expected to have completely overcast skies throughout the week, with average highs between 14 and 17°C. Ñuble will have a similar scenario, although in Cobquecura, the clouds may vary more between partly cloudy, overcast, and completely covered. Finally, in the Biobío Region, there will also be cooler temperatures, between 12 and 15°C, with mostly overcast skies, although from Thursday onwards, it will likely be only partly cloudy. The Meteochile forecast does not show rain for the week. However, according to meteorologist Jaime Leyton from Megatiempo, "a few drops" could potentially fall "on the hills of the Chacabuco mountain range and something more noticeable in the Andes." However, he ruled out the possibility of rain in the Greater Santiago area.