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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: Steti
Code: USTEA
Type of measuring programme: Automated measuring program
Locality owner: Czech Hydrometeorological Institute
Classification
Abbreviation: B/U/R
Localization
Coordinates: 50° 27´ 14.958" North latitude 14° 22´ 26.986" East longitude
Altitude: 155 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 PM₂.₅
3h average 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 µg∙m⁻³
2026-05-23 15:00 - 18:00 CEST 2A 1.3 11.7 95.4 8.3
2026-05-23 16:00 - 19:00 CEST 2A 1.3 10.8 91.5 7.5
2026-05-23 17:00 - 20:00 CEST 2A 1.3 10.8 90.7 7.2
2026-05-23 18:00 - 21:00 CEST 2A 1.3 12.3 89.0 8.2
2026-05-23 19:00 - 22:00 CEST 2A 1.3 13.7 89.8 9.7
2026-05-23 20:00 - 23:00 CEST 2A 1.3 17.8 81.8 12.9
2026-05-23 21:00 - 00:00 CEST 2A 1.3 21.3 69.2 16.1
2026-05-23 22:00 - 01:00 CEST 2A 1.3 24.7 54.7 19.0
2026-05-23 23:00 - 02:00 CEST 1B 1.3 25.3 44.7 20.2
2026-05-24 00:00 - 03:00 CEST 1B 1.3 24.4 39.2 19.9
2026-05-24 01:00 - 04:00 CEST 1B 1.3 25.6 26.7 20.9
2026-05-24 02:00 - 05:00 CEST 1B 1.3 26.0 17.3 21.4
2026-05-24 03:00 - 06:00 CEST 1B 1.3 28.0 13.4 23.3
2026-05-24 04:00 - 07:00 CEST 1B 1.3 28.0 10.9 23.2
2026-05-24 05:00 - 08:00 CEST 1B 1.3 28.5 19.8 23.6
2026-05-24 06:00 - 09:00 CEST 1B 1.9 27.1 35.1 21.4
2026-05-24 07:00 - 10:00 CEST 2A 3.3 25.0 54.7 18.8
2026-05-24 08:00 - 11:00 CEST 2A 5.2 22.0 73.6 15.5
2026-05-24 09:00 - 12:00 CEST 2B 5.3 18.7 94.3 12.7
2026-05-24 10:00 - 13:00 CEST 2B 4.5 16.2 110.6 10.9
2026-05-24 11:00 - 14:00 CEST 2B 3.5 15.1 120.3 9.8
2026-05-24 12:00 - 15:00 CEST 2B 3.6 16.8 123.6 9.8
2026-05-24 13:00 - 16:00 CEST 2B 3.1 20.5 120.5 9.9
2026-05-24 14:00 - 17:00 CEST 2B 2.1 22.6 115.9 9.5

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