What is the air quality trend in Norwich?

Over the past 20 days, Norwich had an average AQI of 55 based on station measurements. The worst day was 2026-05-21 with AQI 87.

How is Norwich air quality measured?

Air quality in Norwich 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 Norwich, United Kingdom

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

Historical PM2.5 and AQI trend from monitoring stations near Norwich, United Kingdom.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

326h

PM2.5 Station

326h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	36	16–77	9.1 µg/m³	15h	1
2026-05-28	56	25–162	17.2 µg/m³	14h	1
2026-05-27	58	16–141	17.8 µg/m³	15h	1
2026-05-26	57	10–164	18.4 µg/m³	18h	1
2026-05-25	56	24–164	17.6 µg/m³	17h	2
2026-05-24	63	17–360	35.1 µg/m³	12h	1
2026-05-23	40	22–89	10.6 µg/m³	17h	1
2026-05-22	62	15–224	24.7 µg/m³	17h	1
2026-05-21	87	21–500	59.9 µg/m³	12h	1
2026-05-20	46	12–134	12.7 µg/m³	11h	1
2026-05-19	71	25–182	26.1 µg/m³	16h	2
2026-05-18	44	12–96	12.8 µg/m³	15h	2
2026-05-17	86	41–164	30.2 µg/m³	18h	2
2026-05-16	51	13–141	15.6 µg/m³	16h	2
2026-05-15	46	10–105	12.9 µg/m³	19h	2
2026-05-14	47	12–131	13.5 µg/m³	21h	2
2026-05-13	43	16–73	11.5 µg/m³	19h	2
2026-05-12	46	17–96	12.5 µg/m³	16h	2
2026-05-11	42	10–109	11.8 µg/m³	19h	1
2026-05-10	65	19–124	19.6 µg/m³	19h	2

Back to Norwich Air Quality