Information about air quality in the Czech Republic

Year: 2020, Others

Overview of the target ambient limit values
exceedances of O₃ and AOT40

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

Updated: 2021-01-21 04:38 CET

The values are from all active stations regardless of whether the number of valid measurement meets the criteria for calculating the aggregated data (annual average).

For the completeness and quality of data is responsible the data supplier, not the CHMI.

Completeness of data – completeness of measured data supplied to AQIS database to the day of table update (in percentage).

Purpose: Health protection
Pollutant Averaging interval Ambient limit Max. permissible number of exceedances Unit
O₃ 8 hours 120 25 in 3 years average µg/m³
Sequence Code Name Owner Data supplier Number of exceedances
in year 2020
Maximum concentrations
in year 2020
Completeness of data
1 TOMHK Ostrava-Mariánské Hory ZÚ, SMOva KHS-Ostrava 15 148.9 97.1
2 BBMAA Brno-Arboretum SMBrno Statutory City of Brno 15 142.7 97.0
3 TOROK Ostrava-Radvanice OZO ZÚ, SMOva KHS-Ostrava 15 140.0 97.4
4 MPHRA Hranice MHRA ENVItech Bohemia s.r.o. 11 137.5 100.0
5 MSMSA Šumperk - 5.ZŠ MŠUM ENVItech Bohemia s.r.o. 7 136.5 100.0
6 TOREK Ostrava-Radvanice ZÚ ZÚ, SMOva KHS-Ostrava 4 136.4 97.6
7 ZZZSA Zlín - ZŠ Kvítkova MZLl ENVItech Bohemia s.r.o. 4 128.4 100.0
8 BBMLA Brno-Lány SMBrno Statutory City of Brno 1 121.6 96.1
Purpose: Protection of vegetation
Pollutant Averaging interval Ambient limit on average over 5 years Unit
O₃ 1.5. - 31.7. (AOT40) 18000 µg/m³.h
The limit was not exceeded at the given the period