Overview
- At 16:00, the National Meteorological Service ranked San Martín third nationwide at 37.3°C with 21% humidity, and the city of Mendoza seventh at 35.3°C.
- Heat held into late afternoon, with Mendoza at 34.7°C by 17:00 as Viedma led the hourly ranking at 38°C.
- Saturday is forecast to ease to about 33°C with southerly winds and a yellow storm alert for San Martín, Rivadavia, Junín, Lavalle and Santa Rosa.
- Outlooks indicate hotter, unstable conditions Sunday and Monday with highs near 36–37°C and isolated storms, with some local forecasts suggesting peaks could top 40°C.
- Local heat‑wave criteria require at least three days with highs of 35°C and lows of 20.6°C, a threshold that could be met, prompting health guidance to hydrate and avoid peak sun.