Bad Air Days in Thomas County, Nebraska

Not enough data

EPA monitors in Thomas County ran on too few days between 2016 and 2025 to give a fair yearly count (about 27% of days covered). Neighbouring counties below are a better guide.

What actually helps 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

Date	AQI	Main pollutant
2025-08-02	87	PM2.5
2021-08-02	84	PM2.5
2018-08-24	79	PM2.5
2017-09-04	76	PM2.5
2025-04-01	76	PM2.5

Most days, not the worst ones

Across 887 monitored days from 2016 to 2025, the air in Thomas County rated Good on 95% of them, more often than the 72% typical of monitored counties, and Moderate on 5%. The median day sat at AQI 17; one day in ten went above 39.

The pollutant setting the AQI on an ordinary day here:

fine particles (PM2.5)100%887 days

Thomas County by year

Year	Days monitored	Good	Moderate	Median AQI	Highest AQI
2025*	92	85	7	22	87
2024	22	22	0	12	36
2022	89	85	4	17	55
2021	117	111	6	19	84
2020	115	109	6	14	74
2019	109	105	4	16	62
2018	114	104	10	21	79
2017	116	110	6	16	76
2016	113	112	1	14	51
2015	118	112	6	19	73
2014	94	92	2	18	52
2013	113	102	11	19	65
2012	104	92	12	24	62
2011	114	106	8	21	83
2010	109	103	6	22	88

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

Nebraska compared

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.