Web Generator 1.0.0
ISKO
Information about air quality in the Czech Republic
Current overview of data from automated stations (non-verified data)

Updated: 2025-12-07 07:25 CET


Basic data Locality photo
Locality: Opava-Katerinky
Code: TOVKA
Type of measuring programme: Automated measuring program
Locality owner: Czech Hydrometeorological Institute
Classification
Abbreviation: B/U/R
Localization
Coordinates: 49° 56´ 41.958" North latitude 17° 54´ 34.310" East longitude
Altitude: 255 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
2025-12-06 05:00 - 08:00 CET 55.6 52.3
2025-12-06 06:00 - 09:00 CET 55.4 47.4
2025-12-06 07:00 - 10:00 CET 55.4 45.9
2025-12-06 08:00 - 11:00 CET 59.7 42.0
2025-12-06 09:00 - 12:00 CET 55.1 42.2
2025-12-06 10:00 - 13:00 CET 41.8 33.8
2025-12-06 11:00 - 14:00 CET 26.5 29.9
2025-12-06 12:00 - 15:00 CET 16.0 16.5
2025-12-06 13:00 - 16:00 CET 12.3 11.8
2025-12-06 14:00 - 17:00 CET 12.7 9.7
2025-12-06 15:00 - 18:00 CET 14.5 8.4
2025-12-06 16:00 - 19:00 CET 15.8 8.6
2025-12-06 17:00 - 20:00 CET 15.4 10.4
2025-12-06 18:00 - 21:00 CET 17.4 11.4
2025-12-06 19:00 - 22:00 CET 16.1 11.6
2025-12-06 20:00 - 23:00 CET 13.5 12.3
2025-12-06 21:00 - 00:00 CET 10.3 14.1
2025-12-06 22:00 - 01:00 CET 9.2 12.3
2025-12-06 23:00 - 02:00 CET 9.9 8.6
2025-12-07 00:00 - 03:00 CET 9.4 8.2
2025-12-07 01:00 - 04:00 CET 11.6 8.1
2025-12-07 02:00 - 05:00 CET 13.6 10.4
2025-12-07 03:00 - 06:00 CET 14.7 10.2
2025-12-07 04:00 - 07:00 CET 12.1 12.1

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