Updated: 2026-05-24 17:25 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
2026-05-23 15:00 - 18:00 CEST	1A		19.7	21.3
2026-05-23 16:00 - 19:00 CEST	1B		20.7	23.7
2026-05-23 17:00 - 20:00 CEST	1B		23.3	24.7
2026-05-23 18:00 - 21:00 CEST	1B		28.3	24.3
2026-05-23 19:00 - 22:00 CEST	1B		32.0	23.7
2026-05-23 20:00 - 23:00 CEST	1B		30.3	20.7
2026-05-23 21:00 - 00:00 CEST	1B		27.0	19.3
2026-05-23 22:00 - 01:00 CEST
2026-05-23 23:00 - 02:00 CEST
2026-05-24 00:00 - 03:00 CEST
2026-05-24 01:00 - 04:00 CEST
2026-05-24 02:00 - 05:00 CEST
2026-05-24 03:00 - 06:00 CEST	1A		12.3	18.0
2026-05-24 04:00 - 07:00 CEST	1A		13.3	18.3
2026-05-24 05:00 - 08:00 CEST	1A		14.7	20.3
2026-05-24 06:00 - 09:00 CEST	1A		15.7	20.3
2026-05-24 07:00 - 10:00 CEST	1A		17.0	20.7
2026-05-24 08:00 - 11:00 CEST	1A		16.3	19.3
2026-05-24 09:00 - 12:00 CEST	1A		17.0	22.0
2026-05-24 10:00 - 13:00 CEST	1B		15.7	24.0
2026-05-24 11:00 - 14:00 CEST	1B		17.3	26.0
2026-05-24 12:00 - 15:00 CEST	1B		17.0	23.0
2026-05-24 13:00 - 16:00 CEST	1A		18.7	18.3
2026-05-24 14:00 - 17:00 CEST	1A		20.0	16.0

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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