Bad Air Days in Lincoln County, Oklahoma: under 1 a Year
under 1 bad air day a year
Fewer bad air days than most monitored US counties. Ranked 692 of 996 monitored counties, where 1 is worst.
What makes them bad: mostly ozone: summer smog (0% particle days).
The bad-air season here
- J
- F
- M
- A
- M
- J
- J
- A
- S
- O
- N
- D
Most bad days here fall in October. Averaged over 2016 to 2025.
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 record for Lincoln
The worst recent year was 2016, with 1 bad day on 365 monitored days.
| Date | AQI | Main pollutant |
|---|---|---|
| 2016-10-11 | 105 | Ozone |
| 2016-06-07 | 87 | Ozone |
| 2016-05-07 | 84 | Ozone |
| 2016-07-11 | 80 | PM2.5 |
| 2016-06-09 | 77 | Ozone |
The air on a normal day
Across 382 monitored days from 2016 to 2017, the air in Lincoln County rated Good on 83% of them, more often than the 72% typical of monitored counties, and Moderate on 17%. The median day sat at AQI 38; one day in ten went above 54.
The pollutant setting the AQI on an ordinary day here:
- ozone62%238 days
- fine particles (PM2.5)36%138 days
- coarse dust (PM10)2%6 days
Every recent year on file
| Year | Days monitored | Good | Moderate | Over 100 | Over 150 | Median AQI | Highest AQI |
|---|---|---|---|---|---|---|---|
| 2017 | 17 | 16 | 1 | 0 | 0 | 27 | 53 |
| 2016 | 365 | 301 | 63 | 1 | 0 | 39 | 105 |
| 2015 | 293 | 210 | 83 | 0 | 0 | 41 | 87 |
| 2014 | 355 | 299 | 55 | 1 | 0 | 40 | 105 |
| 2010 | 291 | 275 | 16 | 0 | 0 | 33 | 77 |
Nearby counties on file
- Love County10/yr
- Tulsa County6/yr
- Oklahoma County6/yr
- Jefferson County5/yr
- McClain County5/yr
- Ottawa County4/yr
- Carter County4/yr
- Washington County4/yr
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.