EnviroNearby

Dawson County, Georgia air quality history

Daily Air Quality Index summaries from EPA monitors in Dawson, Georgia, 1987–2025.

95%
Good days in 2025
34
Median daily AQI, 2025
0
Days above 100 in 2025
244
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Dawson, Georgia on 244 days. 232 of those days (95%) were in the Good range, and the median daily AQI was 34. That median is lower than the typical monitored county in Georgia (median 46 across 25 counties), and lower than the typical monitored U.S. county (40). The main pollutant was ozone on 244 days. Across the years with fuller monitoring, the share of Good days rose: an average of 52% in 1987–1989 versus 93% in 2023–2025.

EPA did not report an AQI for every day of 2025 here (244 of 365 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.

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%1987: Good 118 of 272 days1987: Moderate 110 of 272 days1987: Unhealthy for Sensitive Groups 37 of 272 days1987: Unhealthy 6 of 272 days1987: Very Unhealthy 1 of 272 days19871988: Good 100 of 222 days1988: Moderate 72 of 222 days1988: Unhealthy for Sensitive Groups 36 of 222 days1988: Unhealthy 12 of 222 days1988: Very Unhealthy 2 of 222 days1989: Good 166 of 244 days1989: Moderate 67 of 244 days1989: Unhealthy for Sensitive Groups 9 of 244 days1989: Unhealthy 2 of 244 days1990: Good 144 of 273 days1990: Moderate 96 of 273 days1990: Unhealthy for Sensitive Groups 26 of 273 days1990: Unhealthy 6 of 273 days1990: Very Unhealthy 1 of 273 days1991: Good 201 of 263 days1991: Moderate 55 of 263 days1991: Unhealthy for Sensitive Groups 6 of 263 days1991: Unhealthy 1 of 263 days1992: Good 198 of 267 days1992: Moderate 62 of 267 days1992: Unhealthy for Sensitive Groups 6 of 267 days1992: Unhealthy 1 of 267 days19921993: Good 157 of 271 days1993: Moderate 89 of 271 days1993: Unhealthy for Sensitive Groups 19 of 271 days1993: Unhealthy 6 of 271 days1994: Good 211 of 274 days1994: Moderate 56 of 274 days1994: Unhealthy for Sensitive Groups 7 of 274 days1995: Good 178 of 273 days1995: Moderate 82 of 273 days1995: Unhealthy for Sensitive Groups 12 of 273 days1995: Unhealthy 1 of 273 days1996: Good 164 of 240 days1996: Moderate 67 of 240 days1996: Unhealthy for Sensitive Groups 8 of 240 days1996: Unhealthy 1 of 240 days1997: Good 152 of 210 days1997: Moderate 41 of 210 days1997: Unhealthy for Sensitive Groups 16 of 210 days1997: Unhealthy 1 of 210 days19971998: Good 99 of 214 days1998: Moderate 76 of 214 days1998: Unhealthy for Sensitive Groups 27 of 214 days1998: Unhealthy 12 of 214 days1999: Good 100 of 210 days1999: Moderate 69 of 210 days1999: Unhealthy for Sensitive Groups 34 of 210 days1999: Unhealthy 7 of 210 days2000: Good 133 of 244 days2000: Moderate 86 of 244 days2000: Unhealthy for Sensitive Groups 23 of 244 days2000: Unhealthy 2 of 244 days2001: Good 160 of 241 days2001: Moderate 66 of 241 days2001: Unhealthy for Sensitive Groups 14 of 241 days2001: Unhealthy 1 of 241 days2002: Good 167 of 245 days2002: Moderate 54 of 245 days2002: Unhealthy for Sensitive Groups 20 of 245 days2002: Unhealthy 4 of 245 days20022003: Good 136 of 214 days2003: Moderate 68 of 214 days2003: Unhealthy for Sensitive Groups 10 of 214 days2004: Good 192 of 245 days2004: Moderate 50 of 245 days2004: Unhealthy for Sensitive Groups 3 of 245 days2005: Good 164 of 235 days2005: Moderate 59 of 235 days2005: Unhealthy for Sensitive Groups 11 of 235 days2005: Unhealthy 1 of 235 days2006: Good 143 of 236 days2006: Moderate 84 of 236 days2006: Unhealthy for Sensitive Groups 8 of 236 days2006: Unhealthy 1 of 236 days2007: Good 150 of 245 days2007: Moderate 85 of 245 days2007: Unhealthy for Sensitive Groups 9 of 245 days2007: Unhealthy 1 of 245 days20072008: Good 168 of 244 days2008: Moderate 68 of 244 days2008: Unhealthy for Sensitive Groups 8 of 244 days2009: Good 200 of 234 days2009: Moderate 33 of 234 days2009: Unhealthy for Sensitive Groups 1 of 234 days2010: Good 187 of 244 days2010: Moderate 49 of 244 days2010: Unhealthy for Sensitive Groups 7 of 244 days2010: Unhealthy 1 of 244 days2011: Good 195 of 239 days2011: Moderate 44 of 239 days2012: Good 220 of 242 days2012: Moderate 22 of 242 days20122013: Good 229 of 245 days2013: Moderate 15 of 245 days2013: Unhealthy for Sensitive Groups 1 of 245 days2014: Good 218 of 245 days2014: Moderate 26 of 245 days2014: Unhealthy for Sensitive Groups 1 of 245 days2015: Good 212 of 227 days2015: Moderate 14 of 227 days2015: Unhealthy for Sensitive Groups 1 of 227 days2016: Good 216 of 244 days2016: Moderate 26 of 244 days2016: Unhealthy for Sensitive Groups 2 of 244 days2017: Good 224 of 242 days2017: Moderate 16 of 242 days2017: Unhealthy for Sensitive Groups 2 of 242 days20172018: Good 222 of 245 days2018: Moderate 21 of 245 days2018: Unhealthy for Sensitive Groups 2 of 245 days2019: Good 225 of 244 days2019: Moderate 18 of 244 days2019: Unhealthy for Sensitive Groups 1 of 244 days2020: Good 239 of 245 days2020: Moderate 6 of 245 days2021: Good 230 of 245 days2021: Moderate 15 of 245 days2022: Good 238 of 245 days2022: Moderate 6 of 245 days2022: Unhealthy for Sensitive Groups 1 of 245 days20222023: Good 222 of 244 days2023: Moderate 20 of 244 days2023: Unhealthy for Sensitive Groups 2 of 244 days2024: Good 225 of 245 days2024: Moderate 19 of 245 days2024: Unhealthy 1 of 245 days2025: Good 232 of 244 days2025: Moderate 12 of 244 days2025
  • 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 year0501001501987: 90th percentile AQI 1191988: 90th percentile AQI 1291989: 90th percentile AQI 901990: 90th percentile AQI 1081991: 90th percentile AQI 711992: 90th percentile AQI 771993: 90th percentile AQI 1001994: 90th percentile AQI 711995: 90th percentile AQI 841996: 90th percentile AQI 841997: 90th percentile AQI 901998: 90th percentile AQI 1221999: 90th percentile AQI 1292000: 90th percentile AQI 1012001: 90th percentile AQI 872002: 90th percentile AQI 1002003: 90th percentile AQI 872004: 90th percentile AQI 712005: 90th percentile AQI 842006: 90th percentile AQI 872007: 90th percentile AQI 842008: 90th percentile AQI 772009: 90th percentile AQI 582010: 90th percentile AQI 742011: 90th percentile AQI 612012: 90th percentile AQI 502013: 90th percentile AQI 482014: 90th percentile AQI 512015: 90th percentile AQI 492016: 90th percentile AQI 512017: 90th percentile AQI 472018: 90th percentile AQI 502019: 90th percentile AQI 482020: 90th percentile AQI 432021: 90th percentile AQI 472022: 90th percentile AQI 472023: 90th percentile AQI 492024: 90th percentile AQI 492025: 90th percentile AQI 461987: Median AQI 581988: Median AQI 581989: Median AQI 441990: Median AQI 501991: Median AQI 421992: Median AQI 421993: Median AQI 481994: Median AQI 421995: Median AQI 461996: Median AQI 441997: Median AQI 421998: Median AQI 541999: Median AQI 542000: Median AQI 482001: Median AQI 462002: Median AQI 442003: Median AQI 442004: Median AQI 402005: Median AQI 432006: Median AQI 482007: Median AQI 472008: Median AQI 442009: Median AQI 382010: Median AQI 432011: Median AQI 442012: Median AQI 402013: Median AQI 352014: Median AQI 372015: Median AQI 382016: Median AQI 422017: Median AQI 362018: Median AQI 352019: Median AQI 372020: Median AQI 312021: Median AQI 362022: Median AQI 352023: Median AQI 382024: Median AQI 392025: Median AQI 34198719921997200220072012201720222025
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 2025

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
Ozone244100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
2025244232120000344697Ozone
20242452251901003949154Ozone
20232442222020003849126Ozone
2022245238610003547136Ozone
2021245230150000364787Ozone
202024523960000314374Ozone
20192442251810003748126Ozone
20182452222120003550108Ozone
20172422241620003647112Ozone
20162442162620004251126Ozone
20152272121410003849101Ozone
20142452182610003751101Ozone
20132452291510003548105Ozone
2012242220220000405093Ozone
2011239195440000446193Ozone
20102441874971004374151Ozone
20092342003310003858101Ozone
20082441686880004477133Ozone
20072451508591004784161Ozone
20062361438481004887151Ozone
200523516459111004384159Ozone
20042451925030004071119Ozone
200321413668100004487150Ozone
2002245167542040044100169Ozone
200124116066141004687156Ozone
2000244133862320048101159Ozone
1999210100693470054129164Ozone
1998214997627120054122192Ozone
199721015241161004290156Ozone
19962401646781004484174Ozone
199527317882121004684179Ozone
19942742115670004271150Ozone
1993271157891960048100195Ozone
19922671986261004277156Ozone
19912632015561004271174Ozone
1990273144962661050108204Ozone
19892441666792004490192Ozone
19882221007236122058129205Ozone
19872721181103761058119203Ozone

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 2025

All monitored counties in Georgia

Source: U.S. EPA AirData, “Annual AQI by County” files for 1987–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem