Bad Air Days in Lawrence County, Tennessee: 0 a Year

0 bad air days a year

Rare: among the cleanest-air counties EPA monitors. Ranked 985 of 996 monitored counties, where 1 is worst.

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

In 2000 to 2009 this county averaged 19 bad days a year; in 2016 to 2025, 0. The air has improved.

Date	AQI	Main pollutant
2021-07-22	98	PM2.5
2023-07-17	98	PM2.5
2021-07-23	89	PM2.5
2021-08-02	88	PM2.5
2016-11-14	84	PM2.5

The air on a normal day

Across 3,174 monitored days from 2016 to 2025, the air in Lawrence County rated Good on 80% of them, more often than the 72% typical of monitored counties, and Moderate on 20%. The median day sat at AQI 34; one day in ten went above 55.

The pollutant setting the AQI on an ordinary day here:

fine particles (PM2.5)100%3,174 days

Year by year

Year	Days monitored	Good	Moderate	Over 100	Median AQI	Highest AQI
2025*	356	290	66	0	33	68
2024	360	272	88	0	38	84
2023	359	246	113	0	41	98
2022	351	306	45	0	26	82
2021	357	274	83	0	34	98
2020	359	325	34	0	26	75
2019	330	244	86	0	36	66
2018	352	276	76	0	36	70
2017	234	193	41	0	34	83
2016	116	98	18	0	35	84
2015	110	77	33	0	40	73
2014	113	73	40	0	42	77
2013	110	68	42	0	44	68
2012	59	31	28	0	48	69
2011	254	168	84	2	46	115
2010	58	23	35	0	55	75

*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.