Information about air quality in the Czech Republic

Year: 2020

Preliminary overview of the ambient limits exceedances

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

Updated: 2021-06-30 06:00 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: ASTOA
Locality: Praha 5-Stodůlky
Sequence Date Value
1 2020-03-28 18:00 122.4
2 2020-04-06 17:00 121.2
3 2020-04-09 17:00 138.2
4 2020-04-17 17:00 131.7
5 2020-04-18 17:00 126.2
6 2020-04-23 17:00 124.0
7 2020-04-24 17:00 128.9
8 2020-04-25 00:00 120.2
9 2020-04-27 17:00 122.9
10 2020-04-28 16:00 120.7
11 2020-05-08 18:00 135.8
12 2020-05-09 17:00 144.9
13 2020-05-17 17:00 121.2
14 2020-05-19 16:00 123.3
15 2020-07-30 17:00 130.5
16 2020-07-31 16:00 120.7
17 2020-08-01 17:00 131.9
18 2020-08-07 17:00 130.7
19 2020-08-08 17:00 137.3
20 2020-08-09 17:00 151.3
21 2020-08-12 17:00 125.4
22 2020-08-13 17:00 130.2
23 2020-08-16 17:00 120.4