Information about air quality in the Czech Republic

Year: 2021, Others

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

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

Updated: 2022-06-30 08:42 CEST

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 2021	Maximum concentrations in year 2021	Completeness of data
1	TOMHK	Ostrava-Mariánské Hory	ZÚ, SMOva	KHS-Ostrava	18	150.6	98.4
2	TOROK	Ostrava-Radvanice OZO	ZÚ, SMOva	KHS-Ostrava	17	143.6	99.1
3	TOREK	Ostrava-Radvanice ZÚ	ZÚ, SMOva	KHS-Ostrava	16	139.8	97.3
4	BBMAA	Brno-Arboretum	SMBrno	Statutory City of Brno	15	134.5	100.0
5	BBMLA	Brno-Lány	SMBrno	Statutory City of Brno	8	131.5	100.0
6	MPHRA	Hranice	MHRA	ENVItech Bohemia s.r.o.	4	129.3	100.0
7	ZZZSA	Zlín - ZŠ Kvítkova	MZLl	ENVItech Bohemia s.r.o.	1	126.2	100.0
8	MSMSA	Šumperk, ZŠ Vrchlického	MŠUM	ENVItech Bohemia s.r.o.	1	120.3	100.0
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