Updated: 2025-08-02 12:25 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
2025-08-01 10:00 - 13:00 CEST	2A	1.4	7.0		81.9
2025-08-01 11:00 - 14:00 CEST	2A	1.5	5.4		85.0
2025-08-01 12:00 - 15:00 CEST	2A	1.7	5.4		84.5
2025-08-01 13:00 - 16:00 CEST	2A	1.8	5.2		86.2
2025-08-01 14:00 - 17:00 CEST	2A	1.7	4.8		89.6
2025-08-01 15:00 - 18:00 CEST	2A	1.4	4.6		94.2
2025-08-01 16:00 - 19:00 CEST	2A	1.2	4.7		95.0
2025-08-01 17:00 - 20:00 CEST	2A	1.3	6.2		90.5
2025-08-01 18:00 - 21:00 CEST	2A	1.4	7.9		81.9
2025-08-01 19:00 - 22:00 CEST	2A	1.3	10.1		73.1
2025-08-01 20:00 - 23:00 CEST	2A	1.1	12.0		67.8
2025-08-01 21:00 - 00:00 CEST	1B	1.1	14.1		60.2
2025-08-01 22:00 - 01:00 CEST	1B	1.4	14.5		56.1
2025-08-01 23:00 - 02:00 CEST	1B	1.6	15.5		46.2
2025-08-02 00:00 - 03:00 CEST	1B	1.6	14.4		46.6
2025-08-02 01:00 - 04:00 CEST	1B	1.4	13.1		47.6
2025-08-02 02:00 - 05:00 CEST	1B	1.3	11.2		45.3
2025-08-02 03:00 - 06:00 CEST	1B	1.3	10.7		39.3
2025-08-02 04:00 - 07:00 CEST	1B	1.2	11.6		32.3
2025-08-02 05:00 - 08:00 CEST	1B	1.3	16.3		29.9
2025-08-02 06:00 - 09:00 CEST	1B	1.4	21.0		30.6
2025-08-02 07:00 - 10:00 CEST	1B	1.4	19.9		35.7
2025-08-02 08:00 - 11:00 CEST	1B	1.3	18.0		48.8
2025-08-02 09:00 - 12:00 CEST	2A	1.6	13.7		66.1

---

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