EnviroNearby

Columbia County, Georgia air quality history

Daily Air Quality Index summaries from EPA monitors in Columbia, Georgia, 2005–2024.

94%
Good days in 2024
36
Median daily AQI, 2024
0
Days above 100 in 2024
172
Days with an AQI in 2024 (of 366)

In 2024, EPA reported a daily Air Quality Index (AQI) for Columbia, Georgia on 172 days. 162 of those days (94%) were in the Good range, and the median daily AQI was 36. That median is lower than the typical monitored county in Georgia (median 44 across 28 counties), and lower than the typical monitored U.S. county (41). The main pollutant was ozone on 172 days. Across the years with fuller monitoring, the share of Good days rose: an average of 70% in 2005–2007 versus 96% in 2022–2024.

EPA did not report an AQI for every day of 2024 here (172 of 366 days). Figures describe monitored days only; seasonal monitoring (for example, ozone measured only in warmer months) can make a county look cleaner or dirtier than a full-year record would.

The most recent year with data for this county is 2024; EPA's files for 2025–2025 contain no row for it, which usually means its monitors stopped reporting.

How the days broke down each year

Each bar is one year. The colored segments show the share of monitored days that fell in each AQI category.

Share of monitored days in each AQI category, by year0%25%50%75%100%2005: Good 200 of 238 days2005: Moderate 32 of 238 days2005: Unhealthy for Sensitive Groups 6 of 238 days20052006: Good 163 of 239 days2006: Moderate 64 of 239 days2006: Unhealthy for Sensitive Groups 11 of 239 days2006: Unhealthy 1 of 239 days2007: Good 132 of 226 days2007: Moderate 84 of 226 days2007: Unhealthy for Sensitive Groups 9 of 226 days2007: Unhealthy 1 of 226 days20072008: Good 159 of 241 days2008: Moderate 76 of 241 days2008: Unhealthy for Sensitive Groups 6 of 241 days2009: Good 208 of 239 days2009: Moderate 31 of 239 days20092010: Good 181 of 243 days2010: Moderate 61 of 243 days2010: Unhealthy for Sensitive Groups 1 of 243 days2011: Good 147 of 234 days2011: Moderate 79 of 234 days2011: Unhealthy for Sensitive Groups 8 of 234 days20112012: Good 194 of 240 days2012: Moderate 42 of 240 days2012: Unhealthy for Sensitive Groups 3 of 240 days2012: Unhealthy 1 of 240 days2013: Good 226 of 237 days2013: Moderate 11 of 237 days20132014: Good 214 of 240 days2014: Moderate 26 of 240 days2015: Good 227 of 243 days2015: Moderate 16 of 243 days20152016: Good 217 of 243 days2016: Moderate 26 of 243 days2017: Good 235 of 245 days2017: Moderate 9 of 245 days2017: Unhealthy for Sensitive Groups 1 of 245 days20172018: Good 223 of 245 days2018: Moderate 22 of 245 days2019: Good 229 of 245 days2019: Moderate 16 of 245 days20192020: Good 239 of 241 days2020: Moderate 2 of 241 days2021: Good 239 of 245 days2021: Moderate 6 of 245 days20212022: Good 238 of 245 days2022: Moderate 7 of 245 days2023: Good 233 of 242 days2023: Moderate 9 of 242 days20232024: Good 162 of 172 days2024: Moderate 10 of 172 days2024
  • Good
  • Moderate
  • Unhealthy for Sensitive Groups
  • Unhealthy
  • Very Unhealthy
  • Hazardous

Typical and high-end AQI over time

The median is the middle day of the year. The 90th percentile is the level that only the highest 10% of days exceeded.

Median and 90th-percentile daily AQI, by year0501002005: 90th percentile AQI 672006: 90th percentile AQI 902007: 90th percentile AQI 872008: 90th percentile AQI 802009: 90th percentile AQI 582010: 90th percentile AQI 712011: 90th percentile AQI 842012: 90th percentile AQI 642013: 90th percentile AQI 482014: 90th percentile AQI 512015: 90th percentile AQI 482016: 90th percentile AQI 512017: 90th percentile AQI 482018: 90th percentile AQI 502019: 90th percentile AQI 492020: 90th percentile AQI 442021: 90th percentile AQI 462022: 90th percentile AQI 452023: 90th percentile AQI 472024: 90th percentile AQI 482005: Median AQI 332006: Median AQI 442007: Median AQI 472008: Median AQI 472009: Median AQI 382010: Median AQI 442011: Median AQI 462012: Median AQI 432013: Median AQI 372014: Median AQI 402015: Median AQI 372016: Median AQI 402017: Median AQI 372018: Median AQI 362019: Median AQI 392020: Median AQI 312021: Median AQI 332022: Median AQI 342023: Median AQI 362024: Median AQI 3620052007200920112013201520172019202120232024
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 2024

On each monitored day, the AQI reflects whichever measured pollutant had the highest index. This counts how many days each pollutant set the AQI. A pollutant that was not measured here cannot appear.

PollutantDays as main pollutantShare of monitored days
Ozone172100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
2024172162100000364890Ozone
202324223390000364774Ozone
202224523870000344571Ozone
202124523960000334667Ozone
202024123920000314451Ozone
2019245229160000394974Ozone
2018245223220000365090Ozone
2017245235910003748105Ozone
2016243217260000405193Ozone
2015243227160000374884Ozone
2014240214260000405180Ozone
2013237226110000374893Ozone
20122401944231004364151Ozone
20112341477980004684126Ozone
20102431816110004471108Ozone
2009239208310000385890Ozone
20082411597660004780129Ozone
20072261328491004787164Ozone
200623916364111004490161Ozone
20052382003260003367133Ozone

What this data can and can’t tell you

It is a county-level summary. EPA reports one AQI per day for the county, based on the monitors operating there. Air at a particular street, school or home can differ, especially near roads, industry or wildfire smoke.

It is not a health assessment. The AQI is EPA’s scale for communicating daily air quality. A county’s history can’t tell you what the health risk is for any particular person. For daily conditions and health guidance, see AirNow.

Rules change over time. EPA has revised AQI breakpoints, most recently for fine particles in 2024, so some year-to-year change can reflect the scale rather than the air.

Counties in Georgia with a similar median AQI in 2024

All monitored counties in Georgia

Source: U.S. EPA AirData, “Annual AQI by County” files for 2005–2024 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem