What is the air quality trend in Columbus?

Over the past 15 days, Columbus had an average AQI of 38 based on station measurements. The worst day was 2026-07-16 with AQI 66.

How is Columbus air quality measured?

Air quality in Columbus 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 Columbus, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

305h

PM2.5 Station

305h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	42	5–88	11.4 µg/m³	17h	2
2026-07-20	51	11–119	14.8 µg/m³	20h	2
2026-07-19	48	18–93	13.5 µg/m³	20h	2
2026-07-18	44	13–139	12.5 µg/m³	23h	2
2026-07-17	57	12–156	18.8 µg/m³	22h	2
2026-07-16	66	10–264	32.6 µg/m³	24h	2
2026-07-15	35	8–82	8.9 µg/m³	24h	2
2026-07-14	33	16–49	7.8 µg/m³	23h	2
2026-07-13	32	8–55	7.7 µg/m³	21h	2
2026-07-12	26	7–55	6.3 µg/m³	22h	2
2026-07-11	28	10–47	6.8 µg/m³	22h	3
2026-07-10	32	13–54	7.7 µg/m³	21h	2
2026-07-09	29	11–48	6.9 µg/m³	22h	2
2026-07-08	28	7–69	6.8 µg/m³	23h	2
2026-07-07	33	33–33	8.0 µg/m³	1h	4

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