Stephansplatz

Series: Unverified Air, no. 24

Day: 26 October 2026

Place: Vienna, Austria

NO₂ (red): 19.8 µg/m³, the day’s highest hour, 22:00 UTC

O₃ (blue): 75.4 µg/m³, the day’s highest hour, 14:00 UTC

Wind: from 270°, 6 km/h, at 22:00 UTC

Station code: AT9STEF

Station type: urban background

Network: Gemeinde Wien - MA22 Umweltschutz

Inlet height: 4 m

Instruments: NO₂ horibaAPNA370; O₃ horibaAPOA360

Coordinates: 48.20815 N, 16.37325 E

Buildings: 34, 10.2–87.7 m high

Heights: 97 % measured, from the official building register (Austria, Wien) via EUBUCCO

Lines: 12,753 black, 545 red, 1,605 blue

Line length: 96 m in total

Made: 27 October 2026, 09:00:38 UTC, in 18 s, on the gallery’s server in Helsinki, Finland

Size: A3, 297 × 420 mm (plotted); 2376 × 3360 px (this image)