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Information about air quality in the Czech Republic
Preliminary overview of the ambient limits exceedances

Year: 2025, Others

The number of ambient limit value exceedances,
red marked exceeded the ambient limit value

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

Updated: 2025-12-14 03:23 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 Year ambient limit Max. permissible number of exceedances Unit
SO₂ 1 hour 350 24 µg∙m -3
The limit was not exceeded at the given the period
Pollutant Averaging interval Year ambient limit Max. permissible number of exceedances Unit
SO₂ 24 hours 125 3 µg∙m -3
The limit was not exceeded at the given the period
Pollutant Averaging interval Year ambient limit Max. permissible number of exceedances Unit
NO₂ 1 hour 200 18 µg∙m -3
Sequence Code Name Owner Data supplier Number of exceedances Maximum concentrations Completeness of data
1 TNSVA Nošovice ONOS ENVItech Bohemia s.r.o. 2 237 64.5
Pollutant Averaging interval Year ambient limit Max. permissible number of exceedances Unit
CO 8 hours 10 000 0 µg∙m -3
The limit was not exceeded at the given the period
Pollutant Averaging interval Year ambient limit Max. permissible number of exceedances Unit
PM₁₀ 24 hours 50 35 µg∙m -3
Sequence Code Name Owner Data supplier Number of exceedances Maximum concentrations Completeness of data
1 SKRPA Kralupy nad Vltavou-sportoviště ZÚ Ústí nL ZU se sidlem v Usti n. L. 28 119 98.2
2 TOROK Ostrava-Radvanice OZO ZÚ, SMOva KHS-Ostrava 23 98 100.0
3 TKAOK Karviná ZÚ ZÚ-Ostrava ZU-Ostrava 19 93 100.0
4 BBOMA Brno-Komárov SMBrno Statutory City of Brno 18 71 99.8
5 UUKTA Ústí n.L.-Pasteurova ZÚ Ústí nL ZU se sidlem v Usti n. L. 17 97 93.3
6 MOLSA Olomouc-Šmeralova ZÚ-Ostrava ZU se sidlem v Ostravě-CHL 15 72 79.3
7 TOREK Ostrava-Radvanice ZÚ ZÚ, SMOva KHS-Ostrava 14 85 100.0
8 MSMSA Šumperk, ZŠ Vrchlického MŠUM ENVItech Bohemia s.r.o. 13 127 100.0
9 ZROZA Rožnov pod Radhoštěm MÚRO ENVItech Bohemia s.r.o. 13 79 97.5
10 ARERA Praha 5-Řeporyje ZÚ Ústí nL ZU se sidlem v Usti n. L. 13 78 94.5
11 BBMSA Brno-Svatoplukova SMBrno Statutory City of Brno 13 72 100.0
12 MLOSA Loštice OLOŠ ENVItech Bohemia s.r.o. 12 192 96.5
13 MVBYA Velká Bystřice MÚVB ENVItech Bohemia s.r.o. 12 124 97.4
14 TOMHK Ostrava-Mariánské Hory ZÚ, SMOva KHS-Ostrava 12 99 100.0
15 SKOAA Kolín SAZ ZÚ Ústí nL ZU se sidlem v Usti n. L. 12 70 98.9
16 TOPDA Ostrava-Poruba DD ZÚ, SMOva KHS-Ostrava 11 84 96.8
17 BBMAA Brno-Arboretum SMBrno Statutory City of Brno 9 89 99.8
18 HHKSA Hr.Král.-Sukovy sady ZÚ Ústí nL ZU se sidlem v Usti n. L. 9 67 99.8
19 UMLAA Milá ORGREZ ORGREZ,a.s. 8 98 87.0
20 PKLSA Klatovy soud ZÚ Ústí nL ZU se sidlem v Usti n. L. 8 60 99.7
21 ZZZSA Zlín-ZŠ Kvítkova MZLl ENVItech Bohemia s.r.o. 6 69 89.9
22 THAOA Havířov ZÚ ZÚ, SMHa ZU-Ostrava 6 69 100.0
23 MPHRA Hranice MHRA ENVItech Bohemia s.r.o. 6 66 99.2
24 ASROA Praha 10-Šrobárova ZÚÚstí/SZÚ ZU se sidlem v Usti n. L. 6 64 98.6
25 UKOSA Kostomlaty pod Mileš. ORGREZ ORGREZ,a.s. 5 87 87.5
26 BHODA Hodonín ZÚ-Ostrava ZU-Ostrava 5 59 100.0
27 UDROA Droužkovice ORGREZ ORGREZ,a.s. 4 82 86.7
28 BMOCA Sivice Českomorav Ceskomoravsky cement a.s. 4 63 82.5
29 BBMLA Brno-Lány SMBrno Statutory City of Brno 4 62 99.9
30 ZOTMA Otrokovice-město MOTRO ENVItech Bohemia s.r.o. 4 59 57.2
31 BMOKA Mokrá Českomorav Ceskomoravsky cement a.s. 4 58 82.5
32 TNSVA Nošovice ONOS ENVItech Bohemia s.r.o. 3 81 64.5
33 JJIZA Jihlava-Znojemská ZÚ-Ostrava ZU se sidlem v Ostravě-Centrum hyg.lab., prac.Jihlava 3 62 91.3
34 CSTRA Strakonice-ZŠ Strakonice ZÚ Ústí nL ZU se sidlem v Usti n. L. 2 78 99.8
35 UNVDA Nová Víska u Domašína ORGREZ ORGREZ,a.s. 2 68 85.6
36 CCBTA Čes. Budějovice-Třešň. ZÚ Ústí nL ZU-Usti n/L, pracoviste Ceske Budejovice 1 71 98.5
37 JPEMA Pelhřimov ZÚ-Ostrava ZU- Ostrava, prac. Jihlava 1 57 99.9