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

Year: 2024

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

Updated: 2025-06-30 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
Ambient limit: 120
Max. permissible number of exceedances: 25
Owner: ČHMÚ
Data supplier: ČHMÚ-pobočka Ústí n/Labem-AIM
Code of the measuring programme: LLILA
Locality: Liberec-Rochlice
Sequence Date Value
1 2024-07-20 17:00 121
2 2024-07-21 17:00 131
3 2024-08-01 16:00 127
4 2024-08-13 17:00 122
5 2024-08-14 19:00 138
6 2024-08-24 17:00 130
7 2024-08-29 15:00 125
8 2024-08-30 16:00 133
9 2024-09-03 17:00 126
10 2024-09-04 16:00 136
11 2024-09-05 17:00 122
12 2024-09-07 15:00 123
13 2024-09-08 15:00 122