What is the air quality trend in Aurora?

Over the past 8 days, Aurora had an average AQI of 101 based on station measurements. The worst day was 2026-07-17 with AQI 227.

How is Aurora air quality measured?

Air quality in Aurora 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 Aurora, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 6 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	63	32–96	18.4 µg/m³	22h	83
2026-07-20	99	55–108	34.4 µg/m³	24h	84
2026-07-19	110	51–161	40.2 µg/m³	24h	88
2026-07-18	51	21–90	13.2 µg/m³	24h	88
2026-07-17	227	69–357	172.8 µg/m³	24h	92
2026-07-16	151	45–325	98.2 µg/m³	24h	85
2026-07-15	53	50–69	13.1 µg/m³	24h	88
2026-07-14	60	60–60	16.4 µg/m³	1h	91

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