Bad Air Days in Pittsburg County, Oklahoma: 2 a Year

2 bad air days a year

About the middle of monitored US counties. Ranked 445 of 996 monitored counties, where 1 is worst.

What makes them bad: a mix of particles and ozone (46% particle days).

Which months to watch

Most bad days here fall in August and March and June and September. Averaged over 2016 to 2025.

What actually helps here

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 record for Pittsburg

In 2000 to 2009 this county averaged 6 bad days a year; in 2016 to 2025, 2. The air has improved. The worst recent year was 2023, with 7 bad days on 355 monitored days.

Date	AQI	Main pollutant
2020-06-27	141	PM2.5
2025-03-02	140	PM2.5
2022-02-14	139	PM2.5
2025-03-14	139	PM2.5
2022-03-03	134	PM2.5

An ordinary day in Pittsburg

Across 3,607 monitored days from 2016 to 2025, the air in Pittsburg County rated Good on 60% of them, less often than the 72% typical of monitored counties, and Moderate on 40%. The median day sat at AQI 47; one day in ten went above 64.

The pollutant setting the AQI on an ordinary day here:

fine particles (PM2.5)59%2,115 days
ozone41%1,492 days

Year by year

Year	Days monitored	Good	Moderate	Over 100	Over 150	Median AQI	Highest AQI
2025*	365	207	155	3	0	48	140
2024	362	198	162	2	0	48	105
2023	355	196	152	7	0	49	119
2022	348	208	136	4	0	47	139
2021	360	176	180	4	0	51	117
2020	366	230	135	1	0	44	141
2019	365	220	143	2	0	46	105
2018	363	232	130	1	0	46	108
2017	357	233	124	0	0	44	100
2016	366	258	108	0	0	43	85
2015	365	260	105	0	0	41	100
2014	355	196	159	0	0	47	93
2013	363	180	176	7	0	51	108
2012	366	126	229	11	0	56	147
2011	365	126	215	24	2	57	156
2010	365	158	206	1	0	53	101

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

Oklahoma 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, and on why a purifier does not touch ozone in smoke vs ozone.