Bad Air Days in Liberty County, Florida: 0 a Year

0 bad air days a year

Rare: among the cleanest-air counties EPA monitors. Ranked 957 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.

Better or worse than it was

In 2000 to 2009 this county averaged 3 bad days a year; in 2016 to 2025, 0. The air has improved.

Date	AQI	Main pollutant
2025-04-17	77	Ozone
2019-03-24	74	Ozone
2019-05-15	74	Ozone
2022-03-03	74	Ozone
2022-05-27	74	Ozone

An ordinary day in Liberty

Across 3,427 monitored days from 2016 to 2025, the air in Liberty County rated Good on 98% of them, more often than the 72% typical of monitored counties, and Moderate on 2%. The median day sat at AQI 32; one day in ten went above 44.

The pollutant setting the AQI on an ordinary day here:

ozone100%3,427 days

Year by year

Year	Days monitored	Good	Moderate	Median AQI	Highest AQI
2025*	341	336	5	33	77
2024	330	327	3	31	54
2023	347	340	7	33	64
2022	355	346	9	32	74
2021	364	358	6	32	61
2020	358	356	2	31	51
2019	351	339	12	33	74
2018	284	273	11	31	71
2017	355	350	5	31	61
2016	342	333	9	33	67
2015	352	345	7	31	61
2014	351	343	8	32	61
2013	282	272	10	29	87
2012	356	336	20	32	80
2011	330	303	27	35	74
2010	324	293	31	36	93

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

Elsewhere in Florida

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.