Updated: 2025-04-03 10:25 CEST

---

Basic data
Locality:	Stara Lesna, AV SAV, EMEP
Code:	5SLEA
Type of measuring programme:	Automated measuring program
Locality owner:	Slovak Hydrometeorological Institute
Classification
Abbreviation:	B/R/-
Localization
Coordinates:	49° 9´ 10.003" North latitude 20° 17´ 28.000" East longitude
Altitude:	808 m

---

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 08:00 - 11:00 CEST			2.7	8.0
2025-04-02 09:00 - 12:00 CEST			2.7	9.3
2025-04-02 10:00 - 13:00 CEST			3.0	10.7
2025-04-02 11:00 - 14:00 CEST			3.0	11.3
2025-04-02 12:00 - 15:00 CEST			3.0	13.3
2025-04-02 13:00 - 16:00 CEST			3.0	13.0
2025-04-02 14:00 - 17:00 CEST			3.0	14.3
2025-04-02 15:00 - 18:00 CEST			3.0	14.7
2025-04-02 16:00 - 19:00 CEST			3.0	14.7
2025-04-02 17:00 - 20:00 CEST			3.0	13.3
2025-04-02 18:00 - 21:00 CEST			3.0	13.7
2025-04-02 19:00 - 22:00 CEST			3.4	15.0
2025-04-02 20:00 - 23:00 CEST			3.7	16.0
2025-04-02 21:00 - 00:00 CEST			4.0	17.0
2025-04-02 22:00 - 01:00 CEST			3.7	17.7
2025-04-02 23:00 - 02:00 CEST			3.3	18.0
2025-04-03 00:00 - 03:00 CEST			2.7	17.0
2025-04-03 01:00 - 04:00 CEST			2.3	16.0
2025-04-03 02:00 - 05:00 CEST			2.0	13.3
2025-04-03 03:00 - 06:00 CEST			2.0	12.0
2025-04-03 04:00 - 07:00 CEST			2.0	11.3
2025-04-03 05:00 - 08:00 CEST			2.3	11.7
2025-04-03 06:00 - 09:00 CEST			2.3	10.0
2025-04-03 07:00 - 10:00 CEST			2.3	9.0

---

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

---

---

Map of station position

Map is on page with detailed information about locality