Peru's El Niño Costero drives heat surge and health warnings

The coastal region of Peru is experiencing an unusual heat wave as the El Niño Costero brings warm ocean waters and north‑easterly winds. The National Meteorology and Hydrology Service (Senamhi) predicts daytime temperatures of up to 29 °C in parts of Lima, especially in districts such as Santa Anita, La Molina, Ate and San Juan de Lurigancho, raising ultraviolet radiation levels. Authorities advise using sunscreen, wide‑brimmed hats, staying hydrated and limiting sun exposure between 10 a.m. and 3 p.m.

Health officials warn that the increased humidity and heat also heighten the risk of respiratory allergies, which affect roughly one in five Peruvians. Doctors recommend daily ventilation, regular washing of curtains and bedding, frequent vacuuming, and avoiding carpet use to reduce dust‑mite and mold exposure. They also caution against mixing cleaning chemicals, which can produce irritating gases. The Pan American Health Organization (OPAS) adds that the El Niño conditions could spur more dengue cases, other respiratory illnesses and even mental‑health problems across the country.