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: 2020-02-26 04:29 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
The limit was not exceeded at the given the period
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