Bad Air Days in Pottawattamie County, Iowa

Not enough data

EPA monitors in Pottawattamie County ran on too few days between 2016 and 2025 to give a fair yearly count (about 34% of days covered). Neighbouring counties below are a better guide.

Is a purifier worth it here?

EPA monitors here ran too few days to give a fair yearly count. Use AirNow for today's air.

Better or worse than it was

The worst recent year was 2023, with 1 bad day on 122 monitored days.

Date	AQI	Main pollutant
2023-09-06	151	PM2.5
2021-07-30	117	PM2.5
2018-04-11	102	PM2.5
2023-01-21	98	PM2.5
2023-05-18	96	PM2.5

Most days, not the worst ones

Across 1,244 monitored days from 2016 to 2025, the air in Pottawattamie County rated Good on 68% of them, less often than the 72% typical of monitored counties, and Moderate on 32%. The median day sat at AQI 41; one day in ten went above 59.

The pollutant setting the AQI on an ordinary day here:

fine particles (PM2.5)97%1,203 days
coarse dust (PM10)3%41 days

Every recent year on file

Year	Days monitored	Good	Moderate	Over 100	Over 150	Median AQI	Highest AQI
2025*	118	83	35	0	0	37	87
2024	117	77	40	0	0	42	75
2023	122	64	57	1	1	49	151
2022	121	91	30	0	0	37	72
2021	124	83	40	1	0	44	117
2020	124	85	39	0	0	41	80
2019	130	93	37	0	0	38	73
2018	124	80	43	1	0	42	102
2017	127	80	47	0	0	43	74
2016	137	106	31	0	0	36	71
2015	122	81	41	0	0	43	84
2014	119	71	47	1	0	46	111
2013	129	69	60	0	0	46	88
2012	121	51	70	0	0	52	99
2011	119	56	63	0	0	52	94
2010	247	171	75	1	0	32	134

*2025 may be a partial year in EPA's file.

Elsewhere in Iowa

How this is counted

A bad air day is a day the county's daily AQI from EPA AirData went above 100, the level where EPA tells children, older adults and people with asthma or heart disease to cut back outdoors. Monitors do not run every day, so yearly counts are scaled to 365 days. This is the record, not today's air: for that, check AirNow. More on the method in how the county numbers are made, on the AQI 100 line in what counts as a bad air day.