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Information about air quality in the Czech Republic
Current overview of data from automated stations (non-verified data)

Updated: 2025-12-05 06:26 CET


Basic data Locality photo
Locality: Usti n.L.-mesto
Code: UULMA
Type of measuring programme: Automated measuring program
Locality owner: Czech Hydrometeorological Institute
Classification
Abbreviation: B/U/RC
Localization
Coordinates: 50° 39´ 39.941" North latitude 14° 2´ 35.027" East longitude
Altitude: 147 m

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 04:00 - 07:00 CET 1A 18.6 18.3 13.2
2025-12-04 05:00 - 08:00 CET 1A 22.5 18.3 12.4
2025-12-04 06:00 - 09:00 CET 1B 24.6 21.5 9.8
2025-12-04 07:00 - 10:00 CET 1B 28.1 20.7 8.5
2025-12-04 08:00 - 11:00 CET 1B 29.1 22.3 7.2
2025-12-04 09:00 - 12:00 CET 1B 31.7 22.6 9.4
2025-12-04 10:00 - 13:00 CET 1B 32.4 27.4 10.7
2025-12-04 11:00 - 14:00 CET 1B 32.3 25.2 12.3
2025-12-04 12:00 - 15:00 CET 1B 30.0 21.9 14.0
2025-12-04 13:00 - 16:00 CET 1B 29.4 18.4 13.1
2025-12-04 14:00 - 17:00 CET 1B 28.9 20.9 11.8
2025-12-04 15:00 - 18:00 CET 1B 32.4 25.0 11.4
2025-12-04 16:00 - 19:00 CET 1B 33.4 27.5 12.6
2025-12-04 17:00 - 20:00 CET 1B 33.9 26.5 12.5
2025-12-04 18:00 - 21:00 CET 1B 32.2 25.1 12.8
2025-12-04 19:00 - 22:00 CET 1B 30.1 25.8 12.5
2025-12-04 20:00 - 23:00 CET 1B 28.6 27.7 14.8
2025-12-04 21:00 - 00:00 CET 1B 27.4 29.5 20.3
2025-12-04 22:00 - 01:00 CET 1B 25.3 27.7 24.3
2025-12-04 23:00 - 02:00 CET 1B 22.9 33.0 24.0
2025-12-05 00:00 - 03:00 CET 1B 21.9 30.6 17.7
2025-12-05 01:00 - 04:00 CET 1B 21.9 32.5 21.0
2025-12-05 02:00 - 05:00 CET 1B 22.4 28.9 25.1
2025-12-05 03:00 - 06:00 CET 1B 22.4 30.0 29.6

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