Bad Air Days in Sarpy County, Nebraska: 1 a Year

1 bad air day a year

Fewer bad air days than most monitored US counties. Ranked 666 of 996 monitored counties, where 1 is worst.

What makes them bad: mostly particles: smoke and dust (100% particle days).

Which months to watch

Most bad days here fall in July and August and September. Averaged over 2016 to 2025.

What to buy, and what not to

Bad air days are rare here. A standard furnace filter is enough; no purifier needed for outdoor air.
On the odd bad day, check AirNow and keep windows shut.

The worst days on file

The worst recent year was 2020, with 2 bad days on 316 monitored days.

Date	AQI	Main pollutant
2023-09-06	152	PM2.5
2020-07-04	149	PM2.5
2020-07-05	137	PM2.5
2025-08-01	134	PM2.5
2016-04-14	120	PM2.5

An ordinary day in Sarpy

Across 3,411 monitored days from 2016 to 2025, the air in Sarpy 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 40; one day in ten went above 59.

The pollutant setting the AQI on an ordinary day here:

fine particles (PM2.5)100%3,411 days

Every recent year on file

Year	Days monitored	Good	Moderate	Over 100	Over 150	Median AQI	Highest AQI
2025*	353	278	74	1	0	32	134
2024	348	244	103	1	0	37	110
2023	330	230	98	2	1	37	152
2022	331	269	62	0	0	32	94
2021	336	226	108	2	0	41	120
2020	316	227	87	2	0	39	149
2019	350	240	110	0	0	39	82
2018	349	205	144	0	0	46	94
2017	341	160	181	0	0	51	96
2016	357	239	116	2	0	42	120
2015	347	210	137	0	0	44	95
2014	290	187	102	1	0	43	106
2013	306	133	171	2	0	52	128
2012	332	156	176	0	0	52	89
2011	350	135	214	1	0	53	110
2010	207	67	138	2	0	54	125

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

Elsewhere in Nebraska

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.