Median AQI
35
Good
Georgia · County air quality · 2025
Dawson County, Georgia
Median AQI 35 (Good). 94.4% of monitored days rated Good, direct from EPA Air Quality System stations.
- 35
- Median AQI
- 94.4%
- Good-air days
- 0
- Unhealthy days
- 87%
- Cleaner than US counties
The verdict
According to EPA Air Quality System monitoring data, Dawson County's air is good on balance, cleaner than most US counties, a median AQI of 35 with 94.4% of 213 monitored days in the Good band, driven mainly by Ozone.
- 35
- median AQI · Good
- 94.4%
- days rated Good
- Ozone
- main pollutant
- 87%
- cleaner than US counties
Not one day crossed into the Unhealthy tier; the worst single reading was AQI 97.
Data updated July 2026
- Good · 201 d · 94.4%
- Moderate · 12 d · 5.6%
How did Dawson County's air break down in 2025?
Across 213 monitored days, 201 fell in the Good band (AQI 0–50) and 0 reached Unhealthy or worse. The worst single day peaked at AQI 97 (Moderate).
EPA AQS →Air quality data from EPA Air Quality System (2025). 213 days monitored. Median AQI: 35 (Good).
Insights: Dawson County, Georgia. EPA monitors recorded a median Air Quality Index of 35 across 213 measured days in 2025, earning a Good classification and a Excellent health grade. Of those days, 201 (94%) fell in the Good band (AQI 0–50), 12 (6%) registered Moderate readings, and 0 (0%) reached Unhealthy for Sensitive Groups. The 90th-percentile AQI settled at 46, while the worst single-day peak hit 97 (Moderate). Residents averaged about 28.3 clean-air days per 30-day window during the monitoring year.
The full pollutant mix ranks as Ozone (213 days). Across the 2020–2025 trend window, good days shifted by -38 and the median AQI moved +4 points, placing the multi-year trajectory at worsening. The worst single reading over the 2020–2025 window was AQI 97, moderate but never Unhealthy. Nearby counties show comparable readings: Bibb (49.5% good, AQI 51); Charlton (79.0% good, AQI 24); Chatham (66.7% good, AQI 44); Clarke (66.7% good, AQI 44); Clayton (53.1% good, AQI 49); Cobb (92.5% good, AQI 36).
Air Quality Summary
Good Days
94.4%
201 of 213 monitored days
19.4pp vs 75% target
Max AQI Recorded
97
Moderate
Health Grade
Excellent
90th-pct AQI 46
Dawson County, Good days share 94.4%
National avg
Share of monitored days at AQI 0-50 (Good band).
Dawson County, Unhealthy-or-worse share 0.0%
National avg
Share of monitored days above AQI 150 (Unhealthy or worse). Bar maxes at 10% (worst-county ceiling).
AQI Day Breakdown (2025)
Distribution of 213 monitored days across EPA AQI categories.
Good
201
94%
Moderate
12
6%
USG
0
0%
Unhealthy
0
0%
Very Unhealthy
0
0%
Hazardous
0
0%
Pollutant Breakdown
Days where each pollutant was the primary driver of AQI readings in Dawson County.
- Ozone · 213 days · 100.0%
Health Impact Assessment
Excellent
Dawson County's air quality is rated Excellent based on 94.4% good air days. No unhealthy air days were recorded in 2025.
Air quality was acceptable on 94.4% of monitored days in 2025, with a median AQI of 35. Unusually sensitive people can check real-time conditions at AirNow.gov during high-pollution events.
The dominant pollutant is Ozone, driving AQI on 213 of 213 monitored days.
5-Year Air Quality Trend
Air quality is worsening in Dawson County. Best year: 2020 (239 good days).
| Year | Good | Moderate | USG | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|---|
| 2020 | 239 | 6 | 0 | 0 | 31 | 74 |
| 2021 | 230 | 15 | 0 | 0 | 36 | 87 |
| 2022 | 238 | 6 | 1 | 0 | 35 | 136 |
| 2023 | 222 | 20 | 2 | 0 | 38 | 126 |
| 2024 | 225 | 19 | 0 | 1 | 39 | 154 |
| 2025 | 201 | 12 | 0 | 0 | 35 | 97 |
How does Dawson County compare?
How Dawson County compares
Good-day share better than US avg
Dawson County 94.4%
Bibb County, Georgia 49.5%
US average 76.5%
Median AQI better than US avg
Dawson County 35
Bibb County, Georgia 51
US average 38
Unhealthy days / yr about average
Dawson County 0
Bibb County, Georgia 0
US average 0
Other Counties in Georgia
Air quality comparison for nearby counties in Georgia.
Counties with Similar Air Quality
Counties across the US with a similar median AQI to Dawson County.
Androscoggin County, Maine
AQI 35 · 85.5% good
Asotin County, Washington
AQI 35 · 73.8% good
Benton County, Washington
AQI 35 · 88.9% good
Benzie County, Michigan
AQI 35 · 91.1% good
Brooke County, West Virginia
AQI 35 · 79.3% good
Bucks County, Pennsylvania
AQI 35 · 87.5% good
What Dawson County's air means for you
The air here stays in the breathable range year-round, with Ozone the main thing to watch.
- Sensitive groups (asthma, heart conditions, children, older adults) should check the AQI on high-Ozone days, the guide explains what a median of 35 means for exposure. Health guidance
- See how Dawson County ranks against every monitored U.S. county on Good-day share. County rankings
- Compare Dawson County with its Georgia neighbours before drawing a conclusion about the region. All of Georgia
Based on 213 EPA-monitored days in 2025; figures reflect only days the monitors reported. Source: EPA Air Quality System annual summaries.
More Air Quality Data
Air Quality Guides
Frequently Asked Questions
What is the air quality in Dawson County, Georgia? ▼
Dawson County has a median Air Quality Index (AQI) of 35, rated "Good." 94.4% of monitored days (201 out of 213) had good air quality in 2025.
What is the main pollutant in Dawson County? ▼
The primary pollutant in Dawson County is Ozone (O3), which was the main AQI driver on 213 days (100% of monitored days). Can trigger asthma, reduce lung function, and cause chest pain.
How many unhealthy air days does Dawson County have? ▼
In 2025, Dawson County recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 97.
Is the air quality in Dawson County getting better or worse? ▼
Air quality in Dawson County is worsening based on 5-year trends (2020-2025). Best year: 2020 with 239 good days. Worst year: 2025 with 201 good days.
What does AQI 35 mean for health? ▼
Dawson County's median AQI of 35 falls in the "Good" category. See the <a href="/guides/understanding-aqi" class="underline">AQI category guide</a> for what each range means for health.
How does Dawson County compare to other counties in Georgia? ▼
Dawson County has 94.4% good air days. Nearby counties in Georgia: Bibb (49.5% good), Charlton (79.0% good), Chatham (66.7% good), Clarke (66.7% good), Clayton (53.1% good), Cobb (92.5% good).
What is the 90th percentile AQI in Dawson County? ▼
The 90th percentile AQI for Dawson County is 46, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 97 (Moderate).
Data Sources
Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by County dataset, 2020–2025 (aqs.epa.gov). For current conditions (not shown here — this page is historical annual data), see EPA AirNow (airnow.gov). See our methodology for how AQI, median, and coverage figures are computed.
Informational only, not professional advice. Data from EPA AQS. See our disclaimer.
Every figure on PlainAir is rendered directly from EPA AQS air-quality monitoring data, no number is typed in by an editor. This page draws directly on EPA AQS air-quality monitoring data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.