Updated: 2025-01-21 05:25 CET

---

Locality

Basic data
Locality:	Ostrava-Nova Ves-areal OVak
Code:	TONVA
Type of measuring programme:	Automated measuring program
Locality owner:	ZU, MSK
Classification
Abbreviation:	T/U/IAN
Localization
Coordinates:	49° 49´ 26.693" North latitude 18° 14´ 5.796" East longitude
Altitude:	210 m

---

Actual measured level of air pollution

Actual unverified data

Date and time	SO₂		NO₂	CO	O₃		PM₁₀		PM₂.₅
	1h	24h	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
2025-01-20 05:00 - 06:00 CET			4.0				13.0	20.0	12.0
2025-01-20 06:00 - 07:00 CET			4.0				12.0	19.8	11.0
2025-01-20 07:00 - 08:00 CET			8.0				12.0	19.6	11.0
2025-01-20 08:00 - 09:00 CET			8.8				12.0	19.4	11.0
2025-01-20 09:00 - 10:00 CET			8.2				12.0	19.2	10.0
2025-01-20 10:00 - 11:00 CET			8.8				16.0	19.1	10.0
2025-01-20 11:00 - 12:00 CET			4.0				17.0	18.9	10.0
2025-01-20 12:00 - 13:00 CET			8.0				15.0	18.4	10.0
2025-01-20 13:00 - 14:00 CET			9.2				17.0	18.0	10.0
2025-01-20 14:00 - 15:00 CET			9.8				15.0	17.7	10.0
2025-01-20 15:00 - 16:00 CET			12.4				13.0	17.3	10.0
2025-01-20 16:00 - 17:00 CET			11.7				14.0	16.9	11.0
2025-01-20 17:00 - 18:00 CET			9.4				13.0	16.5	11.0
2025-01-20 18:00 - 19:00 CET			8.2				13.0	16.1	11.0
2025-01-20 19:00 - 20:00 CET			4.0				13.0	15.8	12.0
2025-01-20 20:00 - 21:00 CET			4.0				14.0	15.5	13.0
2025-01-20 21:00 - 22:00 CET			4.0				14.0	15.1	13.0
2025-01-20 22:00 - 23:00 CET			4.0				14.0	14.8	13.0
2025-01-20 23:00 - 00:00 CET			4.0				15.0	14.5	13.0
2025-01-21 00:00 - 01:00 CET			4.0				14.0	14.2	12.0
2025-01-21 01:00 - 02:00 CET			4.0				14.0	14.0	13.0
2025-01-21 02:00 - 03:00 CET			4.0				15.0	13.9	13.0
2025-01-21 03:00 - 04:00 CET			4.0				15.0	13.9	13.0
2025-01-21 04:00 - 05:00 CET			4.0				14.0	14.0	13.0

Legend

Color	Description
	Component is not measured
	Incomplete data
	Limit exceeded

---

Map of station position

Map is on page with detailed information about locality