Updated: 2025-12-12 01:25 CET

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Basic data
Locality:	Wien-Stephansplatz
Code:	1STEA
Type of measuring programme:	Automated measuring program
Locality owner:	Magistrat der Stadt Wien
Classification
Abbreviation:	B/U/R
Localization
Coordinates:	48° 12´ 32.000" North latitude 16° 22´ 26.017" East longitude
Altitude:	173 m

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Actual measured level of air pollution

Actual unverified data

Date and time	Air quality	SO₂	NO₂	PM₁₀	O₃
		3h average	3h average	3h average	3h average
		µg∙m⁻³	µg∙m⁻³	µg∙m⁻³	µg∙m⁻³
2025-12-10 23:00 - 02:00 CET			27.0		3.5
2025-12-11 00:00 - 03:00 CET			26.5		3.6
2025-12-11 01:00 - 04:00 CET			25.6		3.5
2025-12-11 02:00 - 05:00 CET			24.1		3.4
2025-12-11 03:00 - 06:00 CET			25.5		3.4
2025-12-11 04:00 - 07:00 CET		0.5	27.9
2025-12-11 05:00 - 08:00 CET		0.6	29.5		3.6
2025-12-11 06:00 - 09:00 CET		0.9	34.6		4.0
2025-12-11 07:00 - 10:00 CET		1.0	40.1		4.8
2025-12-11 08:00 - 11:00 CET		1.0	41.6		8.1
2025-12-11 09:00 - 12:00 CET		0.9	33.7		17.7
2025-12-11 10:00 - 13:00 CET		0.8	26.9		26.4
2025-12-11 11:00 - 14:00 CET		0.8	20.5		33.4
2025-12-11 12:00 - 15:00 CET		0.6	20.3		33.9
2025-12-11 13:00 - 16:00 CET			21.3		32.4
2025-12-11 14:00 - 17:00 CET			24.8		26.5
2025-12-11 15:00 - 18:00 CET		0.3	31.0		19.8
2025-12-11 16:00 - 19:00 CET		0.4	36.5		14.2
2025-12-11 17:00 - 20:00 CET		0.6	42.7		10.0
2025-12-11 18:00 - 21:00 CET		0.5	45.4		6.8
2025-12-11 19:00 - 22:00 CET			43.2		6.3
2025-12-11 20:00 - 23:00 CET			38.9		6.3
2025-12-11 21:00 - 00:00 CET			36.6		5.9
2025-12-11 22:00 - 01:00 CET		0.2	37.3		3.8

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Legend

Level	Index range	Air quality
1A	≥ 0.00 and < 0.34	very good to good
1B	≥ 0.34 and < 0.67
2A	≥ 0.67 and < 1.00	acceptable
2B	≥ 1.00 and < 1.50
3A	≥ 1.50 and < 2.00	aggravated to bad
3B	≥ 2.00
	Component is not measured, index not determined
	Incomplete data

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Map of station position

Map is on page with detailed information about locality