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ISKO
Information about air quality in the Czech Republic
Preliminary overview of the ambient limits exceedances

Year: 2025

calculated of both operational data (yet unverified) and verified data

Updated: 2025-08-11 04:21 CEST

Values given regardless of whether the number of valid measurement meets the criteria for calculating the aggregated data (annual average).

Description Value
Purpose: Health protection
Pollutant: O₃ - ozone
Averaging interval: 8 hours
Unit: µg∙m -3
Year ambient limit: 120
Max. permissible number of exceedances: 25
Owner: ČHMÚ
Data supplier: CHMI-brand Ostrava AIM
Code of the measuring programme: TCERA
Locality: Červená hora
Sequence Date Value
1 2025-03-08 19:00 126
2 2025-03-09 17:00 131
3 2025-03-10 00:00 123
4 2025-04-28 17:00 121
5 2025-04-29 23:00 129
6 2025-04-30 00:00 128
7 2025-05-02 20:00 122
8 2025-05-03 15:00 129
9 2025-05-14 20:00 129
10 2025-05-15 00:00 125
11 2025-06-14 23:00 129
12 2025-06-15 22:00 132
13 2025-06-16 00:00 130
14 2025-06-18 23:00 122
15 2025-06-19 02:00 124
16 2025-06-23 17:00 125
17 2025-07-01 23:00 123
18 2025-07-02 03:00 136
19 2025-07-03 14:00 138
20 2025-07-06 19:00 141
21 2025-07-07 00:00 121
22 2025-07-21 15:00 122
23 2025-08-08 18:00 122
24 2025-08-09 23:00 129
25 2025-08-10 01:00 130