What is the air quality trend in Dupont Circle?

Over the past 8 days, Dupont Circle had an average AQI of 32 based on station measurements. The worst day was 2026-08-01 with AQI 44.

How is Dupont Circle air quality measured?

Air quality in Dupont Circle 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 Dupont Circle, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 31 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	25	23–28	5.9 µg/m³	5h	30
2026-08-07	29	19–45	7.0 µg/m³	24h	27
2026-08-06	43	26–55	10.4 µg/m³	24h	26
2026-08-05	26	18–33	6.2 µg/m³	24h	26
2026-08-04	31	21–39	7.4 µg/m³	24h	26
2026-08-03	30	19–42	7.1 µg/m³	24h	25
2026-08-02	34	26–54	8.3 µg/m³	24h	27
2026-08-01	44	33–55	10.8 µg/m³	16h	28

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