Bad Air Days in Scotts Bluff County, Nebraska: under 1 a Year

under 1 bad air day a year

Rare: among the cleanest-air counties EPA monitors. Ranked 776 of 996 monitored counties, where 1 is worst.

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

The bad-air season here

Most bad days here fall in September and May and October. 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 2017, with 1 bad day on 113 monitored days.

Date	AQI	Main pollutant
2023-05-18	225	PM2.5
2017-09-04	142	PM2.5
2020-10-19	122	PM2.5
2020-09-17	107	PM2.5
2023-09-06	99	PM2.5

An ordinary day in Scotts Bluff

Across 2,349 monitored days from 2016 to 2025, the air in Scotts Bluff County rated Good on 86% of them, more often than the 72% typical of monitored counties, and Moderate on 14%. The median day sat at AQI 23; one day in ten went above 50.

The pollutant setting the AQI on an ordinary day here:

fine particles (PM2.5)100%2,349 days

Year by year

Year	Days monitored	Good	Moderate	Over 100	Over 150	Median AQI	Highest AQI
2025*	308	295	13	0	0	23	64
2024	320	284	36	0	0	16	89
2023	343	298	44	1	1	21	225
2022	339	331	8	0	0	16	79
2021	332	294	38	0	0	21	82
2020	278	170	106	2	0	36	122
2019	113	107	6	0	0	25	74
2018	116	91	25	0	0	29	74
2017	113	80	32	1	0	31	142
2016	87	77	10	0	0	26	62
2015	98	87	11	0	0	28	81
2014	98	87	11	0	0	24	82
2013	89	79	10	0	0	27	61
2012	237	141	94	2	1	48	161
2011	189	146	43	0	0	45	87
2010	210	175	35	0	0	43	80

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

Nearby counties on file

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.