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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: 2025-12-08 03:27 CET

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-Brno AIM
Code of the measuring programme: BMISA
Locality: Mikulov-Sedlec
Sequence Date Value
1 2025-03-09 16:00 123
2 2025-04-30 19:00 125
3 2025-05-03 17:00 122
4 2025-06-15 18:00 138
5 2025-06-16 00:00 126
6 2025-06-19 15:00 128
7 2025-06-23 17:00 122
8 2025-06-26 16:00 121
9 2025-07-02 19:00 131
10 2025-07-03 15:00 141
11 2025-07-05 19:00 123
12 2025-07-06 17:00 139
13 2025-07-21 15:00 123
14 2025-08-09 18:00 131
15 2025-08-13 18:00 128
16 2025-08-14 19:00 132
17 2025-08-15 17:00 143
18 2025-08-16 00:00 132
19 2025-08-20 20:00 121
20 2025-08-27 21:00 123