What is the air quality trend in Ottumwa?

Over the past 15 days, Ottumwa had an average AQI of 37 based on station measurements. The worst day was 2026-05-25 with AQI 52.

How is Ottumwa air quality measured?

Air quality in Ottumwa 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 Ottumwa, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

169h

PM2.5 Station

169h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	46	14–104	13.3 µg/m³	11h	1
2026-05-28	48	13–95	13.1 µg/m³	11h	1
2026-05-27	42	10–76	11.0 µg/m³	12h	1
2026-05-26	33	11–62	8.1 µg/m³	12h	1
2026-05-25	52	23–109	14.9 µg/m³	16h	1
2026-05-24	40	12–91	10.8 µg/m³	14h	1
2026-05-23	33	18–89	8.6 µg/m³	16h	1
2026-05-22	42	8–97	12.2 µg/m³	9h	1
2026-05-21	32	10–147	9.1 µg/m³	14h	1
2026-05-20	37	19–80	9.8 µg/m³	11h	1
2026-05-19	23	8–42	5.4 µg/m³	11h	1
2026-05-18	40	11–91	10.5 µg/m³	11h	1
2026-05-17	32	5–61	7.9 µg/m³	13h	1
2026-05-16	30	13–59	7.4 µg/m³	7h	1
2026-05-15	30	30–30	7.2 µg/m³	1h	1

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