Updated: 2025-10-03 22:27 CEST

---

Locality

Basic data		Locality photo
Locality:	Sneznik
Code:	USNZA
Type of measuring programme:	Automated measuring program
Locality owner:	Czech Hydrometeorological Institute
Classification
Abbreviation:	B/R/N-REG
Localization
Coordinates:	50° 47´ 21.998" North latitude 14° 5´ 12.475" East longitude
Altitude:	590 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
2025-10-02 22:00 - 23:00 CEST	1.3	1.4	4.6		39.1	54.2
2025-10-02 23:00 - 00:00 CEST	1.3	1.4	3.6		44.9	52.0
2025-10-03 00:00 - 01:00 CEST	1.3	1.4	3.4			50.7
2025-10-03 01:00 - 02:00 CEST	1.3	1.4	3.4		41.3	47.9
2025-10-03 02:00 - 03:00 CEST	1.3	1.4	2.5		31.7	44.8
2025-10-03 03:00 - 04:00 CEST	1.3	1.4	3.1		36.1	42.6
2025-10-03 04:00 - 05:00 CEST	1.3	1.4	2.9		34.9	39.9
2025-10-03 05:00 - 06:00 CEST	1.3	1.4	2.7		37.5	37.9
2025-10-03 06:00 - 07:00 CEST	1.3	1.4	3.3		31.7	36.9
2025-10-03 07:00 - 08:00 CEST		1.4
2025-10-03 08:00 - 09:00 CEST	1.3	1.4	2.9		39.1	36.0
2025-10-03 09:00 - 10:00 CEST	1.3	1.4	3.3		59.9	38.7
2025-10-03 10:00 - 11:00 CEST	1.3	1.4	3.1		60.0	42.7
2025-10-03 11:00 - 12:00 CEST	1.3	1.4	3.3		61.8	46.4
2025-10-03 12:00 - 13:00 CEST	1.3	1.4	2.9		61.4	50.2
2025-10-03 13:00 - 14:00 CEST	1.3	1.4	3.3		60.2	53.4
2025-10-03 14:00 - 15:00 CEST	1.3	1.4	3.8		64.8	58.2
2025-10-03 15:00 - 16:00 CEST	1.3	1.4	4.2		74.4	60.2
2025-10-03 16:00 - 17:00 CEST	1.3	1.4	3.8		76.6	64.9
2025-10-03 17:00 - 18:00 CEST	1.3	1.4	3.6		71.6	66.3
2025-10-03 18:00 - 19:00 CEST	1.3	1.4	4.2		59.3	66.3
2025-10-03 19:00 - 20:00 CEST	1.3	1.3	4.0		62.0	66.3
2025-10-03 20:00 - 21:00 CEST	1.3	1.3	3.4		59.9	66.1
2025-10-03 21:00 - 22:00 CEST	1.3	1.3	4.8		68.6	67.2

Legend

Color	Description
	Component is not measured
	Incomplete data
	Limit exceeded

---

Map of station position

Map is on page with detailed information about locality