Sarpy County, Nebraska air quality history

Daily Air Quality Index summaries from EPA monitors in Sarpy, Nebraska, 1995–2025.

79%

Good days in 2025

Median daily AQI, 2025

Days above 100 in 2025

353

Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Sarpy, Nebraska on 353 days. 278 of those days (79%) were in the Good range, and the median daily AQI was 32. That median is about the same as the typical monitored county in Nebraska (median 34 across 10 counties), and lower than the typical monitored U.S. county (40). The main pollutant was fine particles (PM2.5) on 353 days. Across the years with fuller monitoring, the share of Good days rose: an average of 39% in 2010–2012 versus 73% in 2023–2025.

Years with fewer than 120 monitored days (2004, 2005, 2006, 2007, 2008, 2009…) are shown in the table but left out of comparisons and trend statements.

How the days broke down each year

Each bar is one year. The colored segments show the share of monitored days that fell in each AQI category.

Good
Moderate
Unhealthy for Sensitive Groups
Unhealthy
Very Unhealthy
Hazardous

Typical and high-end AQI over time

The median is the middle day of the year. The 90th percentile is the level that only the highest 10% of days exceeded.

Median daily AQI
90th-percentile daily AQI

Main pollutant by day, 2025

On each monitored day, the AQI reflects whichever measured pollutant had the highest index. This counts how many days each pollutant set the AQI. A pollutant that was not measured here cannot appear.

Pollutant	Days as main pollutant	Share of monitored days
Fine particles (PM2.5)	353	100%

Year-by-year data

Annual AQI summary by year
Year	Days with AQI	Good	Moderate	Unhealthy for Sensitive Groups	Unhealthy	Median AQI	90th pct.	Max AQI	Main pollutant
2025	353	278	74	1	0	32	56	134	PM2.5
2024	348	244	103	1	0	37	58	110	PM2.5
2023	330	230	98	1	1	37	59	152	PM2.5
2022	331	269	62	0	0	32	55	94	PM2.5
2021	336	226	108	2	0	41	61	120	PM2.5
2020	316	227	87	2	0	39	57	149	PM2.5
2019	350	240	110	0	0	39	60	82	PM2.5
2018	349	205	144	0	0	46	61	94	PM2.5
2017	341	160	181	0	0	51	62	96	PM2.5
2016	357	239	116	2	0	42	57	120	PM2.5
2015	347	210	137	0	0	44	59	95	PM2.5
2014	290	187	102	1	0	43	61	106	PM2.5
2013	306	133	171	2	0	52	67	128	PM2.5
2012	332	156	176	0	0	52	65	89	PM2.5
2011	350	135	214	1	0	53	69	110	PM2.5
2010	207	67	138	2	0	54	74	125	PM2.5
2009	97	67	29	1	0	39	64	114	PM2.5
2008	106	55	51	0	0	49	62	84	PM2.5
2007	101	59	40	2	0	46	65	112	PM2.5
2006	105	64	41	0	0	46	66	87	PM2.5
2005	104	54	49	1	0	49	70	127	PM2.5
2004	111	66	45	0	0	47	61	95	PM2.5
2003	89	48	41	0	0	46	69	89	PM2.5
2002	115	60	55	0	0	49	68	97	PM2.5
2001	97	47	50	0	0	51	69	83	PM2.5
2000	81	46	35	0	0	46	69	86	PM2.5
1999	81	40	41	0	0	51	71	83	PM2.5
1995	32	31	1	0	0	15	41	62	PM10

What this data can and can’t tell you

It is a county-level summary. EPA reports one AQI per day for the county, based on the monitors operating there. Air at a particular street, school or home can differ, especially near roads, industry or wildfire smoke.

It is not a health assessment. The AQI is EPA’s scale for communicating daily air quality. A county’s history can’t tell you what the health risk is for any particular person. For daily conditions and health guidance, see AirNow.

Rules change over time. EPA has revised AQI breakpoints, most recently for fine particles in 2024, so some year-to-year change can reflect the scale rather than the air.

Counties in Nebraska with a similar median AQI in 2025

All monitored counties in Nebraska

Source: U.S. EPA AirData, “Annual AQI by County” files for 1995–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem