Information about air quality in the Czech Republic

Year: 2021

Preliminary overview of the ambient limits exceedances

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

Updated: 2022-06-30 08:42 CEST

Values given regardless of whether the number of valid measurement meets the criteria for calculating the aggregated data (annual average).

CHMI is responsible for data completeness and quality only at the stations that are administered by CHMI (see the entry "Owner" indicated with the published data).

Description Value
Purpose: Health protection
Pollutant: NO₂ - nitrogen dioxide
Averaging interval: 1 hour
Unit: µg/m³
Ambient limit: 200
Max. permissible number of exceedances: 18
Owner: ZÚ, SMOva
Data supplier: KHS-Ostrava
Code of the measuring programme: TOPDA
Locality: Ostrava-Poruba DD
Sequence Date Value
1 2021-12-08 17:00 229.0