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

Updated: 2026-05-24 17:25 CEST


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
2026-05-23 15:00 - 18:00 CEST 2A 7.5 3.1 91.0
2026-05-23 16:00 - 19:00 CEST 2A 7.4 5.1 94.1
2026-05-23 17:00 - 20:00 CEST 2A 11.0 5.8 97.4
2026-05-23 18:00 - 21:00 CEST 2A 12.1 7.8 95.6
2026-05-23 19:00 - 22:00 CEST 2A 20.0 13.6 85.8
2026-05-23 20:00 - 23:00 CEST 2A 22.9 24.2 71.1
2026-05-23 21:00 - 00:00 CEST 2A 24.1 29.2 61.4
2026-05-23 22:00 - 01:00 CEST 2A 20.0 26.4 57.1
2026-05-23 23:00 - 02:00 CEST 2A 17.8 21.4 63.1
2026-05-24 00:00 - 03:00 CEST 2A 13.4 22.9 66.9
2026-05-24 01:00 - 04:00 CEST 1B 10.0 23.9 35.2
2026-05-24 02:00 - 05:00 CEST 2A 9.7 24.2 63.3
2026-05-24 03:00 - 06:00 CEST 2A 9.1 19.1 63.1
2026-05-24 04:00 - 07:00 CEST 2A 10.0 15.9 62.3
2026-05-24 05:00 - 08:00 CEST 2A 11.1 17.3 58.8
2026-05-24 06:00 - 09:00 CEST 2A 13.3 22.3 55.7
2026-05-24 07:00 - 10:00 CEST 2A 14.5 26.5 64.0
2026-05-24 08:00 - 11:00 CEST 2B 18.2 25.2 77.2
2026-05-24 09:00 - 12:00 CEST 2B 15.4 19.8 93.3
2026-05-24 10:00 - 13:00 CEST 2B 12.5 14.5 99.4
2026-05-24 11:00 - 14:00 CEST 2B 6.5 8.7 105.0
2026-05-24 12:00 - 15:00 CEST 2A 5.8 7.6 102.8
2026-05-24 13:00 - 16:00 CEST 2A 5.4 6.9 104.0
2026-05-24 14:00 - 17:00 CEST 2B 5.1 7.4 107.8

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