Décision en direct pour Sydney. Mise à jour toutes les 30 minutes.
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Sydney's temperate oceanic climate is among the most comfortable in the world for natural ventilation, but seasonal extremes have grown more pronounced. Summers average 26°C with 65% humidity — warm and pleasant, but occasional heatwaves (40°C+) and associated fire smoke make real-time air quality data essential. The ocean sea breeze known as the "Southerly Buster" arrives most summer afternoons, rapidly dropping temperatures by 8–12°C and clearing pollution.
Winters in Sydney are mild and dry — typically the best season for ventilation. July's average of 12–17°C means no heating concerns and generally clean air. The ventilation recommendation for winter Sydney is almost always positive.
The 2019–2020 Black Summer fires turned "should I open my windows?" into a genuine public health question, as smoke blanketed Sydney for weeks with AQI readings above 200. This experience made continuous air quality monitoring — exactly what OpenWindow.live provides — a practical necessity for Sydney residents throughout summer and autumn.
À Sydney, 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.