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Salvador sits in a tropical climate zone where high temperatures and very high humidity persist year-round. Monthly average temperatures typically range from 26–33°C with relative humidity between 75–90% across all seasons. In these conditions, outdoor air is often warmer and more humid than indoor air — meaning ventilation adds heat and moisture rather than removing it. Natural ventilation in Salvador serves mainly for air quality and CO₂ management rather than temperature reduction; air conditioning is the practical primary cooling tool.
The most useful ventilation windows in a tropical climate are during and immediately after rain events. Tropical showers temporarily lower both temperature and humidity, and the 30–60 minutes following a rainstorm are often the best outdoor conditions of the day. Morning hours before solar heating peaks — typically 5–8 AM — offer the lowest overnight temperatures of the day. Air quality is the primary variable to monitor: seasonal haze from agricultural burning, traffic particulates, and industrial pollution events can push AQI above safe ventilation thresholds even when temperatures would otherwise favour opening windows. The real-time AQI component of OpenWindow.live is especially important in tropical cities like Salvador.
À Salvador, les meilleurs moments pour aérer sont généralement tôt le matin (5–8h) et le soir tard, quand la température extérieure passe sous celle de l'intérieur.
Oui, dans la plupart des cas. Ouvrir les fenêtres peut faire baisser la température intérieure de 2–5°C en 30 minutes si l'air extérieur est plus frais.
Au-dessus de 80%, ouvrir les fenêtres rend l'air collant. Mieux vaut attendre des heures plus sèches.