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Munich (München) sits at 520 metres in the Alpine foothills, giving it a cooler, cleaner climate than northern German cities and a distinctive atmospheric phenomenon: the Föhn. This warm, dry southerly wind can raise temperatures by 10–15°C in hours, bringing sudden warmth in any season and unusually clear skies where the Alps are visible from the city centre.
Föhn days are excellent ventilation opportunities — air quality is outstanding and the pressure inversions that normally trap urban pollution are broken. Munich has some of Germany's best outdoor air quality year-round (AQI typically 10–25), helped by its elevation, Alpine proximity, and Bavaria's strict environmental standards.
Bavarian winter ventilation follows the Stoßlüften tradition. The cold Alpine air (−5 to 5°C from November to March) is clean and dry — brief ventilation effectively refreshes indoor CO₂ without significant heat loss if done quickly. Munich's thick-walled building stock retains heat well between ventilation bursts.
À München, 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.