Restelo

Series: Unverified Air, no. 15

Day: 17 October 2026

Place: Lisbon, Portugal

NO₂ (red): 14.5 µg/m³, the day’s highest hour, 00:00 UTC

O₃ (blue): 76.0 µg/m³, the day’s highest hour, 19:00 UTC

Wind: from 353°, 12 km/h, at 00:00 UTC

Station code: PT03087

Station type: urban background

Network: Rede de Qualidade do Ar de Lisboa e Vale do Tejo

Inlet height: 3 m

Instruments: O₃ enviroO341M; NO₂ enrivoAC31M

Coordinates: 38.70500 N, 9.21028 W

Buildings: 35, 2–13 m high

Heights: 97 % measured, from OpenStreetMap

Lines: 1,117 black, 651 red, 651 blue

Line length: 38 m in total

Made: 18 October 2026, 09:14:01 UTC, in 811 s, on the gallery’s server in Helsinki, Finland

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