Updated: 2026-07-23 07:28 CEST

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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
2026-07-22 07:00 - 08:00 CEST					52.1	61.0
2026-07-22 08:00 - 09:00 CEST					46.9	59.0
2026-07-22 09:00 - 10:00 CEST					58.1	57.9
2026-07-22 10:00 - 11:00 CEST					79.6	59.5
2026-07-22 11:00 - 12:00 CEST					89.6	62.8
2026-07-22 12:00 - 13:00 CEST					91.8	66.4
2026-07-22 13:00 - 14:00 CEST					90.8	70.7
2026-07-22 14:00 - 15:00 CEST					92.2	75.1
2026-07-22 15:00 - 16:00 CEST					89.8	79.8
2026-07-22 16:00 - 17:00 CEST					89.0	85.1
2026-07-22 17:00 - 18:00 CEST					90.8	89.2
2026-07-22 18:00 - 19:00 CEST					87.8	90.2
2026-07-22 19:00 - 20:00 CEST					83.4	89.4
2026-07-22 20:00 - 21:00 CEST					79.8	87.9
2026-07-22 21:00 - 22:00 CEST					78.6	86.4
2026-07-22 22:00 - 23:00 CEST					76.0	84.4
2026-07-22 23:00 - 00:00 CEST					72.6	82.2
2026-07-23 00:00 - 01:00 CEST					67.4	79.6
2026-07-23 01:00 - 02:00 CEST					65.6	76.4
2026-07-23 02:00 - 03:00 CEST					67.0	73.8
2026-07-23 03:00 - 04:00 CEST					67.4	71.8
2026-07-23 04:00 - 05:00 CEST						70.7
2026-07-23 05:00 - 06:00 CEST					61.8	68.3
2026-07-23 06:00 - 07:00 CEST					58.1	65.7

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