What is the air quality trend in Dover?

Over the past 8 days, Dover had an average AQI of 67 based on station measurements. The worst day was 2026-07-17 with AQI 122.

How is Dover air quality measured?

Air quality in Dover 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 Dover, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 5 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	34	27–45	8.3 µg/m³	4h	4
2026-07-21	48	28–65	11.7 µg/m³	24h	3
2026-07-20	53	31–71	13.8 µg/m³	24h	3
2026-07-19	64	31–138	18.9 µg/m³	24h	3
2026-07-18	86	54–157	28.7 µg/m³	24h	3
2026-07-17	122	60–190	49.3 µg/m³	24h	4
2026-07-16	84	51–189	30.7 µg/m³	24h	4
2026-07-15	45	32–55	11.0 µg/m³	20h	4

Back to Dover Air Quality