Bad Air Days in Choctaw County, Oklahoma: 0 a Year

0 bad air days a year

Rare: among the cleanest-air counties EPA monitors. Ranked 978 of 996 monitored counties, where 1 is worst.

Is a purifier worth it 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.

Better or worse than it was

Date	AQI	Main pollutant
2018-07-20	93	Ozone
2019-09-07	90	Ozone
2017-05-08	87	Ozone
2019-09-06	87	Ozone
2017-10-19	84	Ozone

Most days, not the worst ones

Across 795 monitored days from 2017 to 2019, the air in Choctaw County rated Good on 94% of them, more often than the 72% typical of monitored counties, and Moderate on 6%. The median day sat at AQI 37; one day in ten went above 48.

The pollutant setting the AQI on an ordinary day here:

ozone100%795 days

Choctaw County by year

Year	Days monitored	Good	Moderate	Median AQI	Highest AQI
2019	252	238	14	37	90
2018	272	254	18	37	93
2017	271	257	14	38	87

Elsewhere in Oklahoma

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.