Updated: 2025-12-05 05:27 CET

---

Locality

Basic data
Locality:	Ostrava-Poruba DD
Code:	TOPDA
Type of measuring programme:	Automated measuring program
Locality owner:	ZU Statutory City of Ostrava
Classification
Abbreviation:	T/U/R
Localization
Coordinates:	49° 50´ 7.700" North latitude 18° 9´ 54.800" East longitude
Altitude:	282 m

---

Actual measured level of air pollution

Actual unverified data

Date and time	SO₂		NO₂	CO	O₃		PM₁₀		PM₂.₅
	1h	24h average	1h	8h average	1h	8h average	1h	24h average	1h
	µg∙m⁻³	µg∙m⁻³	µg∙m⁻³	µg∙m⁻³	µg∙m⁻³	µg∙m⁻³	µg∙m⁻³	µg∙m⁻³	µg∙m⁻³
2025-12-04 05:00 - 06:00 CET							108.0	69.8	107.0
2025-12-04 06:00 - 07:00 CET							105.0	71.8	103.0
2025-12-04 07:00 - 08:00 CET							102.0	74.0	100.0
2025-12-04 08:00 - 09:00 CET							99.0	76.0	96.0
2025-12-04 09:00 - 10:00 CET							100.0	78.4	96.0
2025-12-04 10:00 - 11:00 CET							102.0	81.0	97.0
2025-12-04 11:00 - 12:00 CET							96.0	83.4	92.0
2025-12-04 12:00 - 13:00 CET							81.0	85.1	77.0
2025-12-04 13:00 - 14:00 CET			50.9				67.0	86.3	64.0
2025-12-04 14:00 - 15:00 CET			53.2				69.0	87.7	66.0
2025-12-04 15:00 - 16:00 CET							70.0	89.1	67.0
2025-12-04 16:00 - 17:00 CET							64.0	90.1	61.0
2025-12-04 17:00 - 18:00 CET							58.0	90.4	56.0
2025-12-04 18:00 - 19:00 CET							59.0	89.8	57.0
2025-12-04 19:00 - 20:00 CET							58.0	88.8	56.0
2025-12-04 20:00 - 21:00 CET			41.5				56.0	87.7	54.0
2025-12-04 21:00 - 22:00 CET			47.2				64.0	87.0	62.0
2025-12-04 22:00 - 23:00 CET			41.5				70.0	86.3	69.0
2025-12-04 23:00 - 00:00 CET			38.3				76.0	85.2	75.0
2025-12-05 00:00 - 01:00 CET			39.0				73.0	83.9	72.0
2025-12-05 01:00 - 02:00 CET			37.1				67.0	82.4	66.0
2025-12-05 02:00 - 03:00 CET			35.4				71.0	81.0	70.0
2025-12-05 03:00 - 04:00 CET			34.2				67.0	79.0	66.0
2025-12-05 04:00 - 05:00 CET			34.8				57.0	76.6	56.0

Legend

Color	Description
	Component is not measured
	Incomplete data
	Limit exceeded

---

Map of station position

Map is on page with detailed information about locality