Updated: 2025-04-03 11:25 CEST

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Basic data
Locality:	Trnava, Kollarova
Code:	7TRKA
Type of measuring programme:	Automated measuring program
Locality owner:	Slovak Hydrometeorological Institute
Classification
Abbreviation:	T/U/-
Localization
Coordinates:	48° 22´ 16.006" North latitude 17° 35´ 5.997" East longitude
Altitude:	152 m

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Actual measured level of air pollution

Actual unverified data

Date and time	Air quality	SO₂	NO₂	PM₁₀	O₃		PM₂.₅
		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
2025-04-02 09:00 - 12:00 CEST	1B		25.7	23.0
2025-04-02 10:00 - 13:00 CEST	1A		25.0	19.0
2025-04-02 11:00 - 14:00 CEST	1A		25.3	17.0
2025-04-02 12:00 - 15:00 CEST	1A		26.3	15.3
2025-04-02 13:00 - 16:00 CEST	1A		30.7	14.0
2025-04-02 14:00 - 17:00 CEST	1B		34.3	17.3
2025-04-02 15:00 - 18:00 CEST	1B		37.3	25.0
2025-04-02 16:00 - 19:00 CEST	1B		35.7	31.7
2025-04-02 17:00 - 20:00 CEST	1B		36.0	35.7
2025-04-02 18:00 - 21:00 CEST	1B		32.3	34.7
2025-04-02 19:00 - 22:00 CEST	1B		28.3	33.3
2025-04-02 20:00 - 23:00 CEST	1B		23.0	31.3
2025-04-02 21:00 - 00:00 CEST	1B		19.0	30.7
2025-04-02 22:00 - 01:00 CEST	1B		15.3	29.3
2025-04-02 23:00 - 02:00 CEST	1B		12.3	27.3
2025-04-03 00:00 - 03:00 CEST	1B		11.0	25.7
2025-04-03 01:00 - 04:00 CEST	1A		12.0	24.0
2025-04-03 02:00 - 05:00 CEST	1A		12.3	24.0
2025-04-03 03:00 - 06:00 CEST	1B		33.9	26.0
2025-04-03 04:00 - 07:00 CEST	1B		53.9	30.0
2025-04-03 05:00 - 08:00 CEST	1B		57.3	34.0
2025-04-03 06:00 - 09:00 CEST	2A		56.0	36.3
2025-04-03 07:00 - 10:00 CEST	1B		46.7	33.7
2025-04-03 08:00 - 11:00 CEST	1B		35.7	30.7

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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