Information about air quality in the Czech Republic

Year: 2022

Preliminary overview of the ambient limits exceedances

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

Updated: 2023-06-30 09:52 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/m³
Ambient limit: 120
Max. permissible number of exceedances: 25
Owner: ČHMÚ
Data supplier: ČHMÚ - Libuš AIM
Code of the measuring programme: SONRA
Locality: Ondřejov
Sequence Date Value
1 2022-03-24 17:00 130.5
2 2022-03-25 16:00 121.1
3 2022-04-14 17:00 121.1
4 2022-06-03 17:00 121.0
5 2022-06-11 17:00 123.7
6 2022-06-16 18:00 130.8
7 2022-06-23 17:00 130.4
8 2022-07-18 21:00 129.1
9 2022-07-19 01:00 127.1
10 2022-07-20 16:00 120.7
11 2022-07-21 15:00 146.4
12 2022-07-22 20:00 120.7
13 2022-07-23 01:00 120.7
14 2022-07-24 19:00 122.4
15 2022-07-25 17:00 121.4
16 2022-08-04 16:00 132.4
17 2022-08-05 18:00 158.5
18 2022-08-17 16:00 131.9
19 2022-08-18 16:00 129.7