Tacna, Puno and Arequipa registered more days with frost in April of 2025

The National Institute of Statistics and Informatics (INEI) informed that, according to the monitoring of 15 stations of the National Service of Meteorology and Hydrology (SENAMHI), the departments of Tacna, Puno and Arequipa registered the greater quantity of days with frosts during April of 2025.

The technical report Environmental Statistics is stated that Tacna registered 27 days with frosts in the stations of Chuapalca (-12.5 °C) and 23 days in Bocatoma (-10.0 °C). In Puno, were registered 24 days in Mazo Cruz (-8.6 °C) and Crucero Alto (-5.4 °C), 19 days in Macusani (-4.0 °C), 8 days in Santa Rosa (-3.2 °C), 7 days in Cojata (-2.2 °C) and 5 days in Desaguadero (-1.2 °C).

In Arequipa were registered 22 days with frosts in the stations of Pillones (-7.8 °C), Las Salinas (-6.6 °C) and Imata (-5.6 °C), and 16 days in Tisco (-4.6 °C). In Junin, there were 7 days with frosts in Laive (-1,9 °C); in Pasco, 2 days in Cerro de Pasco (-1,4 °C); and in Cusco, 1 day in the station of Sicuani (-0,4 °C).

During April of 2025, according to the SENAMHI information, in Lima Metropolitan area registered an UV index average of 7, considered of high risk for health. Compared with the same month of 2024, this value increased by 16.7%.

In April, the SENAMHI station in San Borja registered levels of dust, soot and other particles within the allowable limits; nevertheless, these conditions affected the health of the population. The smallest particles – although highly polluting – were kept below the alert levels.

The tropospheric ozone (O₃), gas that could affect the eyes, throat and respiratory tract, exceeded the security limits in the stations of Carabayllo, Puente Piedra and Campo de Marte at certain hours of some days of April of 2025, generating concern by its impact in the health.

In April, according to the SENAMHI information, the flow of the Rimac River reached 57.57 m³/s, which represented an increase of 67.7 % compared to April of 2024 and 34.4% compared to its historic average. On the other hand, the Chillon River registered an average river flow of 10,02 m³/s, higher in 24.6 % and 30.6 % compared to the same month of 2024 and its historic average, respectively.

According to the SENAMHI information during the month under analysis, the average flow of the rivers of the North Pacific slope showed a significant increase. During April, the Jequetepeque River reached 117,02 m³/s, which mean tan increase of 274.1 % compared to April of 2024 and of 71.6% compared to its historic average.

Tumbes River reached an average flow of 636,88 m³/s, with increases of 248.0 % compared to the last year and of 134.3 % compared to its historic average. On the other hand, the Calvas River registered 53,11 m³/s, an increase of 137.5 % compared to April of 2024, although 31.6% below its historic average.

During April of 2025, Lima Metropolitan area produced 68 million 003 thousand cubic meters of drinking water, figure 2.4 % lower compared to the same month of the last year, according to the Service of Potable Water and Sewerage Service of Lima Metropolitan area (SEDAPAL),

During April of 2025, were reported 1,238 emergencies at national level, which represented an increase of 46.5 % compared to April of 2024, according to the information delivered by the National Institute of Civil Defense (INDECI).

These emergencies left 16,991 affected people, 14,737 affected homes, 1,215 homes destroyed and 1,774 hectares of crops lost. Compared to April of the last year, the people affected increased by 207.7 %, the homes affected increased by 42.8 %, the homes destroyed increased by 112.0 %, and hectares of crops destroyed decreased by 27.6 %.

The departments with greater emergencies were: Cajamarca (156), Cusco (153), Ancash (132), Apurimac (107), Huancavelica (91), Huanuco (85), La Libertad (77), Lima (70), Amazonas (58), Ayacucho (51), Pasco (47), Puno (38), Piura (37), Junín (35), Loreto (20), San Martin (16), Arequipa (14), Ucayali (13), Lambayeque (12), Tacna (10), Ica and Madre de Dios (5), Tumbes (3), Moquegua (2) and Callao (1).

The main causes were: heavy rains (785), landslides (124), urban and industrial fires (100), erosions (61), collapse of hills (46), floods (44), strong winds (33), huaycos (15), low temperatures (11), accidents of transportation (7), thunderstorms (3), explosions, storm surges (2 each one), contamination, forest fires and drought (1 each one).