Updated: 2026-08-20 13:26 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
2026-08-19 13:00 - 14:00 CEST					68.0	39.3
2026-08-19 14:00 - 15:00 CEST					80.4	45.7
2026-08-19 15:00 - 16:00 CEST					85.8	52.9
2026-08-19 16:00 - 17:00 CEST					89.2	60.6
2026-08-19 17:00 - 18:00 CEST					86.0	67.5
2026-08-19 18:00 - 19:00 CEST					74.2	72.9
2026-08-19 19:00 - 20:00 CEST					67.4	75.7
2026-08-19 20:00 - 21:00 CEST					62.4	76.7
2026-08-19 21:00 - 22:00 CEST					64.8	76.3
2026-08-19 22:00 - 23:00 CEST					64.2	74.2
2026-08-19 23:00 - 00:00 CEST					62.8	71.4
2026-08-20 00:00 - 01:00 CEST					66.6	68.6
2026-08-20 01:00 - 02:00 CEST					75.8	67.3
2026-08-20 02:00 - 03:00 CEST					62.0	65.8
2026-08-20 03:00 - 04:00 CEST					59.3	64.7
2026-08-20 04:00 - 05:00 CEST						65.1
2026-08-20 05:00 - 06:00 CEST					55.5	63.7
2026-08-20 06:00 - 07:00 CEST					48.7	61.5
2026-08-20 07:00 - 08:00 CEST					50.1	59.7
2026-08-20 08:00 - 09:00 CEST					52.3	57.7
2026-08-20 09:00 - 10:00 CEST					61.6	55.6
2026-08-20 10:00 - 11:00 CEST					69.6	56.7
2026-08-20 11:00 - 12:00 CEST					75.2	59.0
2026-08-20 12:00 - 13:00 CEST					80.8	61.7

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