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: 2025-12-05 06:26 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
2025-12-04 04:00 - 07:00 CET 75.9 74.1
2025-12-04 05:00 - 08:00 CET 74.0 71.1
2025-12-04 06:00 - 09:00 CET 70.9 72.9
2025-12-04 07:00 - 10:00 CET 69.8 70.1
2025-12-04 08:00 - 11:00 CET 70.8 70.8
2025-12-04 09:00 - 12:00 CET 75.1 71.7
2025-12-04 10:00 - 13:00 CET 79.9 74.7
2025-12-04 11:00 - 14:00 CET 74.6 70.3
2025-12-04 12:00 - 15:00 CET 65.1 65.1
2025-12-04 13:00 - 16:00 CET 60.0 56.0
2025-12-04 14:00 - 17:00 CET 64.2 58.0
2025-12-04 15:00 - 18:00 CET 69.8 59.0
2025-12-04 16:00 - 19:00 CET 69.6 66.1
2025-12-04 17:00 - 20:00 CET 81.1 72.7
2025-12-04 18:00 - 21:00 CET 91.2 91.8
2025-12-04 19:00 - 22:00 CET 102.6 102.0
2025-12-04 20:00 - 23:00 CET 99.2 106.6
2025-12-04 21:00 - 00:00 CET 94.9 97.3
2025-12-04 22:00 - 01:00 CET 93.1 87.4
2025-12-04 23:00 - 02:00 CET 89.6 86.1
2025-12-05 00:00 - 03:00 CET 86.2 84.6
2025-12-05 01:00 - 04:00 CET 82.6 84.8
2025-12-05 02:00 - 05:00 CET 79.2 76.5
2025-12-05 03:00 - 06:00 CET 72.5 66.6

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