What is the air quality trend in Sieradz?

Over the past 15 days, Sieradz had an average AQI of 40 based on station measurements. The worst day was 2026-07-17 with AQI 51.

How is Sieradz air quality measured?

Air quality in Sieradz 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 Sieradz, Poland

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

Historical PM2.5 and AQI trend from monitoring stations near Sieradz, Poland.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

319h

PM2.5 Station

319h · 3 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	44	11–72	11.4 µg/m³	22h	3
2026-07-20	43	9–130	11.8 µg/m³	22h	3
2026-07-19	45	10–161	13.1 µg/m³	23h	3
2026-07-18	39	15–142	10.1 µg/m³	24h	3
2026-07-17	51	23–157	13.9 µg/m³	24h	3
2026-07-16	40	20–64	9.9 µg/m³	23h	3
2026-07-15	41	1–76	10.1 µg/m³	21h	2
2026-07-14	41	22–57	10.1 µg/m³	23h	2
2026-07-13	41	17–65	10.1 µg/m³	23h	2
2026-07-12	33	3–52	7.9 µg/m³	22h	3
2026-07-11	36	10–66	8.9 µg/m³	24h	2
2026-07-10	37	16–61	9.0 µg/m³	20h	2
2026-07-09	37	19–102	9.3 µg/m³	23h	3
2026-07-08	46	17–189	15.7 µg/m³	24h	3
2026-07-07	30	30–30	7.1 µg/m³	1h	4

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