Updated: 2026-05-24 17:25 CEST

---

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

---

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
2026-05-23 15:00 - 18:00 CEST	2B	0.9	7.1		106.1
2026-05-23 16:00 - 19:00 CEST	2B	0.8	8.0		103.2
2026-05-23 17:00 - 20:00 CEST	2A	0.8	8.9		98.3
2026-05-23 18:00 - 21:00 CEST	2A	0.6	10.7		90.5
2026-05-23 19:00 - 22:00 CEST	2A	0.7	14.8		81.5
2026-05-23 20:00 - 23:00 CEST	2A	0.7	19.2		74.2
2026-05-23 21:00 - 00:00 CEST	2A	0.9	23.2		68.6
2026-05-23 22:00 - 01:00 CEST	2A	0.9	25.8		64.6
2026-05-23 23:00 - 02:00 CEST	2A	0.8	27.2		57.8
2026-05-24 00:00 - 03:00 CEST	2A	0.8	26.0		55.4
2026-05-24 01:00 - 04:00 CEST	2A	0.6	22.8		55.4
2026-05-24 02:00 - 05:00 CEST	2A	0.6	20.2		58.9
2026-05-24 03:00 - 06:00 CEST	2A	0.5	18.2		57.4
2026-05-24 04:00 - 07:00 CEST	2A	0.6	15.2		59.8
2026-05-24 05:00 - 08:00 CEST	2A	0.7	13.1		65.8
2026-05-24 06:00 - 09:00 CEST	2A	0.8	10.3		74.3
2026-05-24 07:00 - 10:00 CEST	2A	0.9	9.0		86.5
2026-05-24 08:00 - 11:00 CEST	2A	1.3	8.8		94.6
2026-05-24 09:00 - 12:00 CEST	2B	1.5	7.1		101.1
2026-05-24 10:00 - 13:00 CEST	2A	1.6	5.9		99.4
2026-05-24 11:00 - 14:00 CEST	2B	1.3	6.0		102.1
2026-05-24 12:00 - 15:00 CEST	2B	1.2	5.8		107.4
2026-05-24 13:00 - 16:00 CEST	2B	1.1	5.8		114.9
2026-05-24 14:00 - 17:00 CEST	2B	1.1	5.8		116.6

---

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

---

---

Map of station position

Map is on page with detailed information about locality