Updated: 2025-12-05 07:25 CET

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Basic data		Locality photo
Locality:	Hojna Voda
Code:	CHVOA
Type of measuring programme:	Automated measuring program
Locality owner:	Czech Hydrometeorological Institute
Classification
Abbreviation:	B/R/N-REG
Localization
Coordinates:	48° 43´ 27.111" North latitude 14° 43´ 24.175" East longitude
Altitude:	818 m

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Actual measured level of air pollution

Actual unverified data

Date and time	Air quality	SO₂	NO₂	PM₁₀	O₃		PM₁₀ - from model	O₃ - from model
		3h average	3h average	3h average	3h average		3h average	3h average
		µg∙m⁻³	µg∙m⁻³	µg∙m⁻³	µg∙m⁻³		µg∙m⁻³	µg∙m⁻³
2025-12-04 05:00 - 08:00 CET	1A			3.8	31.6
2025-12-04 06:00 - 09:00 CET	1A			3.1	31.6
2025-12-04 07:00 - 10:00 CET	1A			2.9	30.8
2025-12-04 08:00 - 11:00 CET	1A			2.6	30.6
2025-12-04 09:00 - 12:00 CET	1A			2.6	30.2
2025-12-04 10:00 - 13:00 CET	1A			1.8	30.8
2025-12-04 11:00 - 14:00 CET	1A			2.0	30.3
2025-12-04 12:00 - 15:00 CET	1A			2.0	30.6
2025-12-04 13:00 - 16:00 CET	1A			2.7	30.4
2025-12-04 14:00 - 17:00 CET	1A			5.6	31.3
2025-12-04 15:00 - 18:00 CET	1A			7.5	35.6
2025-12-04 16:00 - 19:00 CET	1A			7.8	42.4
2025-12-04 17:00 - 20:00 CET	1A			4.9	48.6
2025-12-04 18:00 - 21:00 CET	1A			3.2	47.6
2025-12-04 19:00 - 22:00 CET	1A			3.0	40.3
2025-12-04 20:00 - 23:00 CET	1A			5.6	33.2
2025-12-04 21:00 - 00:00 CET	1A			6.8	30.4
2025-12-04 22:00 - 01:00 CET	1A			7.0	30.7
2025-12-04 23:00 - 02:00 CET	1A			4.6	31.0
2025-12-05 00:00 - 03:00 CET	1A			4.0	30.0
2025-12-05 01:00 - 04:00 CET	1A			3.6	29.6
2025-12-05 02:00 - 05:00 CET	1A			3.8	27.3
2025-12-05 03:00 - 06:00 CET	1A			3.2	25.6
2025-12-05 04:00 - 07:00 CET	1A			2.4	24.8

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Legend

Level	Index range	Air quality
1A	≥ 0.00 and < 0.34	very good to good
1B	≥ 0.34 and < 0.67
2A	≥ 0.67 and < 1.00	acceptable
2B	≥ 1.00 and < 1.50
3A	≥ 1.50 and < 2.00	aggravated to bad
3B	≥ 2.00
	Component is not measured, index not determined
	Incomplete data

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Map of station position

Map is on page with detailed information about locality