Updated: 2025-12-05 05:27 CET

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Locality

Basic data		Locality photo
Locality:	Ondrejov
Code:	SONRA
Type of measuring programme:	Automated measuring program
Locality owner:	Czech Hydrometeorological Institute
Classification
Abbreviation:	B/R/N-REG
Localization
Coordinates:	49° 54´ 48.647" North latitude 14° 46´ 57.451" East longitude
Altitude:	514 m

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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					30.7	23.4
2025-12-04 06:00 - 07:00 CET					36.7	26.2
2025-12-04 07:00 - 08:00 CET					37.7	28.5
2025-12-04 08:00 - 09:00 CET					35.7	30.5
2025-12-04 09:00 - 10:00 CET					36.3	32.8
2025-12-04 10:00 - 11:00 CET					35.5	34.2
2025-12-04 11:00 - 12:00 CET					32.1	34.0
2025-12-04 12:00 - 13:00 CET					33.1	34.7
2025-12-04 13:00 - 14:00 CET					33.1	35.0
2025-12-04 14:00 - 15:00 CET					30.5	34.2
2025-12-04 15:00 - 16:00 CET					33.5	33.7
2025-12-04 16:00 - 17:00 CET					32.5	33.3
2025-12-04 17:00 - 18:00 CET					29.9	32.5
2025-12-04 18:00 - 19:00 CET					29.1	31.7
2025-12-04 19:00 - 20:00 CET					28.7	31.3
2025-12-04 20:00 - 21:00 CET					28.9	30.8
2025-12-04 21:00 - 22:00 CET					28.3	30.2
2025-12-04 22:00 - 23:00 CET					24.9	29.5
2025-12-04 23:00 - 00:00 CET					26.1	28.5
2025-12-05 00:00 - 01:00 CET					25.9	27.7
2025-12-05 01:00 - 02:00 CET					24.7	27.1
2025-12-05 02:00 - 03:00 CET					24.5	26.5
2025-12-05 03:00 - 04:00 CET						26.2
2025-12-05 04:00 - 05:00 CET					26.3	25.8

Legend

Color	Description
	Component is not measured
	Incomplete data
	Limit exceeded

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Map of station position

Map is on page with detailed information about locality