Bad Air Days in Coweta County, Georgia: under 1 a Year
under 1 bad air day a year
Rare: among the cleanest-air counties EPA monitors. Ranked 801 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 June. Averaged over 2016 to 2025.
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.
The worst days on file
In 2000 to 2009 this county averaged 24 bad days a year; in 2016 to 2025, under 1. The air has improved. The worst recent year was 2016, with 1 bad day on 366 monitored days.
| Date | AQI | Main pollutant |
|---|---|---|
| 2016-06-09 | 154 | Ozone |
| 2016-05-24 | 97 | Ozone |
| 2016-06-10 | 97 | Ozone |
| 2016-06-20 | 87 | Ozone |
| 2016-05-25 | 84 | Ozone |
An ordinary day in Coweta
Across 684 monitored days from 2016 to 2017, the air in Coweta County rated Good on 67% of them, less often than the 72% typical of monitored counties, and Moderate on 33%. The median day sat at AQI 43; one day in ten went above 60.
The pollutant setting the AQI on an ordinary day here:
- fine particles (PM2.5)69%475 days
- ozone31%209 days
Year by year
| Year | Days monitored | Good | Moderate | Over 100 | Over 150 | Median AQI | Highest AQI |
|---|---|---|---|---|---|---|---|
| 2017 | 318 | 213 | 105 | 0 | 0 | 43 | 74 |
| 2016 | 366 | 242 | 123 | 1 | 1 | 43 | 154 |
| 2015 | 365 | 241 | 122 | 2 | 0 | 42 | 108 |
| 2014 | 357 | 213 | 141 | 3 | 0 | 45 | 108 |
| 2013 | 365 | 243 | 122 | 0 | 0 | 43 | 74 |
| 2012 | 364 | 193 | 170 | 1 | 0 | 48 | 112 |
| 2011 | 365 | 184 | 174 | 7 | 0 | 50 | 115 |
| 2010 | 365 | 156 | 209 | 0 | 0 | 53 | 100 |
Elsewhere in Georgia
- Wilkinson Countythin data
- Fulton County6/yr
- Henry County4/yr
- Douglas County4/yr
- Rockdale County3/yr
- DeKalb County3/yr
- Dougherty County3/yr
- Muscogee County3/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.