What is the air quality trend in Žatec?

Over the past 11 days, Žatec had an average AQI of 34 based on station measurements. The worst day was 2026-07-18 with AQI 89.

How is Žatec air quality measured?

Air quality in Žatec is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Žatec, Czech Republic

Name: Žatec Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Žatec, Czech Republic.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

31h

PM2.5 Station

31h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	20	19–21	4.8 µg/m³	2h	1
2026-07-21	28	27–29	6.7 µg/m³	2h	2
2026-07-20	13	4–22	3.1 µg/m³	2h	1
2026-07-18	89	89–89	30.2 µg/m³	1h	1
2026-07-17	39	37–41	9.4 µg/m³	2h	1
2026-07-13	33	33–33	8.0 µg/m³	1h	2
2026-07-12	25	25–25	6.0 µg/m³	1h	2
2026-07-11	40	28–51	9.4 µg/m³	2h	2
2026-07-10	33	23–39	7.9 µg/m³	3h	2
2026-07-09	31	29–33	7.4 µg/m³	4h	2
2026-07-08	30	17–40	7.3 µg/m³	11h	2

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