Median AQI
34
Good
Tennessee · County air quality · 2025
Maury County, Tennessee
Median AQI 34 (Good). 85.1% of monitored days rated Good, direct from EPA Air Quality System stations.
- 34
- Median AQI
- 85.1%
- Good-air days
- 0
- Unhealthy days
- 66%
- Cleaner than US counties
The verdict
According to EPA Air Quality System monitoring data, Maury County's air is good on balance, cleaner than the median US county, a median AQI of 34 with 85.1% of 174 monitored days in the Good band, driven mainly by PM2.5.
- 34
- median AQI · Good
- 85.1%
- days rated Good
- PM2.5
- main pollutant
- 66%
- cleaner than US counties
Not one day crossed into the Unhealthy tier; the worst single reading was AQI 74.
Data updated July 2026
- Good · 148 d · 85.1%
- Moderate · 26 d · 14.9%
How did Maury County's air break down in 2025?
Across 174 monitored days, 148 fell in the Good band (AQI 0–50) and 0 reached Unhealthy or worse. The worst single day peaked at AQI 74 (Moderate).
EPA AQS →Air quality data from EPA Air Quality System (2025). 174 days monitored. Median AQI: 34 (Good).
Insights: Maury County, Tennessee. EPA monitors recorded a median Air Quality Index of 34 across 174 measured days in 2025, earning a Good classification and a Good health grade. Of those days, 148 (85%) fell in the Good band (AQI 0–50), 26 (15%) registered Moderate readings, and 0 (0%) reached Unhealthy for Sensitive Groups. The 90th-percentile AQI settled at 55, while the worst single-day peak hit 74 (Moderate). Residents averaged about 25.5 clean-air days per 30-day window during the monitoring year.
The full pollutant mix ranks as PM2.5 (174 days). Across the 2020–2025 trend window, good days shifted by -154 and the median AQI moved +5 points, placing the multi-year trajectory at stable. The worst single reading over the 2020–2025 window was AQI 74, moderate but never Unhealthy. Nearby counties show comparable readings: Anderson (91.0% good, AQI 42); Blount (69.6% good, AQI 46); Claiborne (96.3% good, AQI 36); Davidson (51.8% good, AQI 50); DeKalb (95.4% good, AQI 35); Dyer (79.4% good, AQI 34).
Air Quality Summary
Good Days
85.1%
148 of 174 monitored days
10.1pp vs 75% target
Max AQI Recorded
74
Moderate
Health Grade
Good
90th-pct AQI 55
Maury County, Good days share 85.1%
National avg
Share of monitored days at AQI 0-50 (Good band).
Maury 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 174 monitored days across EPA AQI categories.
Good
148
85%
Moderate
26
15%
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 Maury County.
- PM2.5 · 174 days · 100.0%
Health Impact Assessment
Good
Maury County's air quality is rated Good based on 85.1% good air days. No unhealthy air days were recorded in 2025.
Air quality was acceptable on 85.1% of monitored days in 2025, with a median AQI of 34. Unusually sensitive people can check real-time conditions at AirNow.gov during high-pollution events.
The dominant pollutant is PM2.5, driving AQI on 174 of 174 monitored days.
5-Year Air Quality Trend
Air quality is stable in Maury County. Best year: 2020 (302 good days).
| Year | Good | Moderate | USG | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|---|
| 2020 | 302 | 49 | 0 | 0 | 29 | 92 |
| 2021 | 252 | 96 | 1 | 0 | 35 | 109 |
| 2022 | 282 | 62 | 0 | 0 | 33 | 82 |
| 2023 | 277 | 81 | 0 | 0 | 36 | 96 |
| 2024 | 297 | 63 | 0 | 0 | 33 | 83 |
| 2025 | 148 | 26 | 0 | 0 | 34 | 74 |
How does Maury County compare?
How Maury County compares
Good-day share better than US avg
Maury County 85.1%
Anderson County, Tennessee 91.0%
US average 76.5%
Median AQI better than US avg
Maury County 34
Anderson County, Tennessee 42
US average 38
Unhealthy days / yr about average
Maury County 0
Anderson County, Tennessee 0
US average 0
Other Counties in Tennessee
Air quality comparison for nearby counties in Tennessee.
Counties with Similar Air Quality
Counties across the US with a similar median AQI to Maury County.
Belknap County, New Hampshire
AQI 34 · 87.9% good
Dyer County, Tennessee
AQI 34 · 79.4% good
Flagler County, Florida
AQI 34 · 97.4% good
Grant County, Oregon
AQI 34 · 66.7% good
Highlands County, Florida
AQI 34 · 93.2% good
Johnson County, Texas
AQI 34 · 91.6% good
What Maury County's air means for you
The air here stays in the breathable range year-round, with PM2.5 the main thing to watch.
- Sensitive groups (asthma, heart conditions, children, older adults) should check the AQI on high-PM2.5 days, the guide explains what a median of 34 means for exposure. Health guidance
- See how Maury County ranks against every monitored U.S. county on Good-day share. County rankings
- Compare Maury County with its Tennessee neighbours before drawing a conclusion about the region. All of Tennessee
Based on 174 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 Maury County, Tennessee? ▼
Maury County has a median Air Quality Index (AQI) of 34, rated "Good." 85.1% of monitored days (148 out of 174) had good air quality in 2025.
What is the main pollutant in Maury County? ▼
The primary pollutant in Maury County is Fine Particles (PM2.5), which was the main AQI driver on 174 days (100% of monitored days). Penetrates deep into lungs and bloodstream. Linked to heart disease and premature death.
How many unhealthy air days does Maury County have? ▼
In 2025, Maury County recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 74.
Is the air quality in Maury County getting better or worse? ▼
Air quality in Maury County is stable based on 5-year trends (2020-2025). Best year: 2020 with 302 good days. Worst year: 2025 with 148 good days.
What does AQI 34 mean for health? ▼
Maury County's median AQI of 34 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 Maury County compare to other counties in Tennessee? ▼
Maury County has 85.1% good air days. Nearby counties in Tennessee: Anderson (91.0% good), Blount (69.6% good), Claiborne (96.3% good), Davidson (51.8% good), DeKalb (95.4% good), Dyer (79.4% good).
What is the 90th percentile AQI in Maury County? ▼
The 90th percentile AQI for Maury County is 55, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 74 (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.