What is the air quality trend in Chester-le-Street?

Over the past 21 days, Chester-le-Street had an average AQI of 40 based on station measurements. The worst day was 2026-07-17 with AQI 81.

How is Chester-le-Street air quality measured?

Air quality in Chester-le-Street 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 Chester-le-Street, United Kingdom

Name: Chester-le-Street Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Chester-le-Street, United Kingdom.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

419h

PM2.5 Station

419h · 3 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	35	13–69	9.0 µg/m³	8h	2
2026-07-21	43	15–154	11.5 µg/m³	22h	4
2026-07-20	31	13–56	7.6 µg/m³	24h	3
2026-07-19	41	15–78	10.6 µg/m³	20h	3
2026-07-18	43	12–79	10.7 µg/m³	20h	3
2026-07-17	81	21–500	46.5 µg/m³	20h	2
2026-07-16	43	22–73	10.7 µg/m³	19h	3
2026-07-15	57	35–158	16.1 µg/m³	21h	3
2026-07-14	45	17–81	11.4 µg/m³	21h	2
2026-07-13	39	11–74	9.8 µg/m³	22h	3
2026-07-12	40	16–88	10.3 µg/m³	21h	3
2026-07-11	37	9–57	9.1 µg/m³	23h	3
2026-07-10	44	24–64	11.0 µg/m³	21h	3
2026-07-09	39	12–66	9.7 µg/m³	21h	3
2026-07-08	36	3–63	9.0 µg/m³	23h	3
2026-07-07	33	7–69	8.1 µg/m³	23h	3
2026-07-06	29	12–55	7.0 µg/m³	13h	2
2026-07-05	29	5–61	7.2 µg/m³	24h	3
2026-07-04	30	2–66	7.5 µg/m³	23h	3
2026-07-03	41	14–120	10.7 µg/m³	20h	3
2026-07-02	30	8–56	7.3 µg/m³	10h	4

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