Decisione live per Sydney. Aggiornata ogni 30 minuti.
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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.
A Sydney, i momenti migliori per ventilare sono di solito al mattino presto (5–8) e dopo il tramonto, quando la temperatura esterna scende sotto quella interna.
Sì, nella maggior parte dei casi. Aprire le finestre può abbassare la temperatura interna di 2–5°C in 30 minuti se l'aria esterna è più fresca.
Sopra l'80% di umidità, aprire le finestre rende l'aria appiccicosa. Meglio aspettare ore più asciutte.