What is the air quality trend in Rochester?

Over the past 8 days, Rochester had an average AQI of 48 based on station measurements. The worst day was 2026-07-16 with AQI 61.

How is Rochester air quality measured?

Air quality in Rochester 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 Rochester, United Kingdom

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 4 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-22	33	32–34	7.9 µg/m³	—	2h	14
2026-07-21	39	28–55	9.5 µg/m³	15.5	24h	28
2026-07-20	46	24–156	13.0 µg/m³	16.2	24h	27
2026-07-19	44	30–65	11.0 µg/m³	12.3	24h	27
2026-07-18	50	32–62	12.4 µg/m³	20.1	24h	25
2026-07-17	56	44–81	14.7 µg/m³	24.9	24h	23
2026-07-16	61	42–185	19.0 µg/m³	22.9	24h	23
2026-07-15	56	38–122	14.7 µg/m³	21.6	22h	20

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