Updated: 2026-04-04 18:25 CEST

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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
2026-04-03 16:00 - 19:00 CEST	2A	0.4	8.2		89.4
2026-04-03 17:00 - 20:00 CEST	2A	0.6	9.2		90.3
2026-04-03 18:00 - 21:00 CEST	2A	0.6	11.8		86.9
2026-04-03 19:00 - 22:00 CEST	2A	0.5	12.9		83.2
2026-04-03 20:00 - 23:00 CEST	2A	0.4	13.2		79.0
2026-04-03 21:00 - 00:00 CEST	2A	0.2	12.6		76.7
2026-04-03 22:00 - 01:00 CEST	2A	0.2	12.7		74.3
2026-04-03 23:00 - 02:00 CEST	2A	0.2	13.0		72.9
2026-04-04 00:00 - 03:00 CEST	2A	0.2	13.0		72.6
2026-04-04 01:00 - 04:00 CEST	2A	0.3	10.8		76.4
2026-04-04 02:00 - 05:00 CEST	2A	0.3	9.4		78.9
2026-04-04 03:00 - 06:00 CEST	2A	0.4	8.1		80.3
2026-04-04 04:00 - 07:00 CEST	2A	0.6	7.9		79.9
2026-04-04 05:00 - 08:00 CEST	2A	0.8	8.3		79.6
2026-04-04 06:00 - 09:00 CEST	2A	0.9	8.2		80.2
2026-04-04 07:00 - 10:00 CEST	2A	0.9	8.4		77.8
2026-04-04 08:00 - 11:00 CEST	2A	0.5	7.8		76.6
2026-04-04 09:00 - 12:00 CEST	2A	0.3	7.0		77.1
2026-04-04 10:00 - 13:00 CEST	2A	0.0	5.9		77.4
2026-04-04 11:00 - 14:00 CEST	2A		5.8		76.4
2026-04-04 12:00 - 15:00 CEST	2A		5.9		74.4
2026-04-04 13:00 - 16:00 CEST	2A		5.9		73.2
2026-04-04 14:00 - 17:00 CEST	2A		6.1		72.0
2026-04-04 15:00 - 18:00 CEST	2A		6.3		71.1

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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