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: 2026-05-24 17:25 CEST


Basic data
Locality: Ostrava Jih
Code: TOSJA
Type of measuring programme: Automated measuring program
Locality owner: ZU Statutory City of Ostrava
Classification
Abbreviation: T/U/RC
Localization
Coordinates: 49° 47´ 40.359" North latitude 18° 14´ 57.363" East longitude
Altitude: 284 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 2B 10.1 13.7 99.2 8.7
2026-05-23 16:00 - 19:00 CEST 2B 10.2 14.0 100.6 9.0
2026-05-23 17:00 - 20:00 CEST 2B 11.4 14.7 100.2 9.3
2026-05-23 18:00 - 21:00 CEST 2B 11.9 17.0 96.4 10.0
2026-05-23 19:00 - 22:00 CEST 2B 16.4 21.3 85.5 12.0
2026-05-23 20:00 - 23:00 CEST 2A 22.6 27.7 69.2 16.0
2026-05-23 21:00 - 00:00 CEST 2A 27.4 28.3 49.7 17.0
2026-05-23 22:00 - 01:00 CEST 2A 27.5 28.0 28.8 19.0
2026-05-23 23:00 - 02:00 CEST 1B 24.7 26.7 15.8 20.3
2026-05-24 00:00 - 03:00 CEST 1B 22.0 29.3 9.1 24.0
2026-05-24 01:00 - 04:00 CEST 1B 18.9 29.7 16.2 24.0
2026-05-24 02:00 - 05:00 CEST 1B 15.5 26.7 14.4 21.3
2026-05-24 03:00 - 06:00 CEST 1B 14.9 23.3 15.7 18.7
2026-05-24 04:00 - 07:00 CEST 1B 13.5 21.0 18.0 16.7
2026-05-24 05:00 - 08:00 CEST 1B 13.8 19.0 25.6 14.7
2026-05-24 06:00 - 09:00 CEST 1B 12.3 17.3 38.1 13.0
2026-05-24 07:00 - 10:00 CEST 2A 9.6 16.7 55.8 12.0
2026-05-24 08:00 - 11:00 CEST 2A 6.2 17.0 74.3 11.7
2026-05-24 09:00 - 12:00 CEST 2A 5.1 15.7 88.6 10.3
2026-05-24 10:00 - 13:00 CEST 2A 5.1 13.0 94.2 8.7
2026-05-24 11:00 - 14:00 CEST 2A 5.1 11.0 95.2 7.3
2026-05-24 12:00 - 15:00 CEST 2A 3.8 10.7 99.1 7.0
2026-05-24 13:00 - 16:00 CEST 2B 3.8 11.7 104.8 7.3
2026-05-24 14:00 - 17:00 CEST 2B 3.8 13.3 109.6 8.0

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