The weather in Vienna was overcast, overcast and then some more overcast. With low clouds, so you really felt like someone had slapped gray lid over the city and surroundings. The promise of the clouds clearing up in the afternoon made me go for a full day in Lainzer Tiergarten.
As the photos show, the fog cleared up around mid-afternoon. Actually, I was in the middle of shooting the Hubertuswarte 450 panorama when the clouds just disappeared mid-shoot.