What is the air quality trend in Cornelius?

Over the past 14 days, Cornelius had an average AQI of 51 based on station measurements. The worst day was 2026-07-17 with AQI 111.

How is Cornelius air quality measured?

Air quality in Cornelius 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 Cornelius, United States

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

308h

PM2.5 Station

308h · 4 stations

Temperature GFS model

55pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	55	25–109	15.4 µg/m³	17h	4
2026-07-20	58	19–90	16.6 µg/m³	19h	4
2026-07-19	55	27–139	15.4 µg/m³	22h	3
2026-07-18	64	25–134	18.7 µg/m³	23h	3
2026-07-17	111	32–299	62.5 µg/m³	24h	3
2026-07-16	79	28–180	30.7 µg/m³	22h	4
2026-07-15	49	25–79	12.7 µg/m³	24h	4
2026-07-14	43	20–62	10.4 µg/m³	23h	4
2026-07-13	36	18–59	8.6 µg/m³	22h	4
2026-07-12	32	10–49	7.6 µg/m³	22h	3
2026-07-11	36	22–54	8.7 µg/m³	22h	3
2026-07-10	31	19–48	7.4 µg/m³	23h	3
2026-07-09	33	18–45	8.0 µg/m³	22h	4
2026-07-08	33	14–54	8.0 µg/m³	23h	4

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