What is the air quality trend in Derby?

Over the past 2 days, Derby had an average AQI of 50 based on station measurements. The worst day was 2026-07-21 with AQI 52.

How is Derby air quality measured?

Air quality in Derby 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 Derby, United States

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

Historical PM2.5 and AQI trend from monitoring stations near Derby, United States.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

33h

PM2.5 Station

33h · 2 stations

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	52	18–118	14.8 µg/m³	16h	2
2026-07-20	48	24–83	12.7 µg/m³	17h	2

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