Dyersburg, TN

EPA AQS → · NOAA →

Metro area air quality from EPA Air Quality System (2024). 347 days monitored. Median AQI: 31 (Good).

Insights: Dyersburg, TN metro. Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 31 over 347 measured days in 2024, which corresponds to a Good band and a Good metro-wide health grade. The monitored-day split lands at 286 Good days (82%), 61 Moderate (18%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 53 while the highest single-day reading hit 92 (Moderate). Metro residents averaged roughly 24.7 clean-air days per 30-day window across the reporting year.

Across the 2020–2024 trend window, good days shifted by -7 and the median AQI moved +0 points, which classifies the multi-year trajectory as stable. The metro avoided any Unhealthy-tier days entirely, an outcome that typically reflects favorable wind patterns, lower industrial density, or effective regional emission controls. Metros with comparable AQI profiles include Butte-Silver Bow, MT (70.5% good, AQI 31); Lewiston-Auburn, ME (92.6% good, AQI 31); Pahrump, NV (87.2% good, AQI 31).

Air Quality Summary

Median AQI

31

Good

Good Days

82.4%

286 of 347 days

Max AQI

92

Moderate

Health Grade

Good

90th pct: 53

AQI Day Breakdown (2024)

Distribution of 347 monitored days across EPA AQI categories.

Good

286

82%

Moderate

61

18%

USG

0

0%

Unhealthy

0

0%

Very Unhealthy

0

0%

Hazardous

0

0%

Health Impact Assessment

Good

The Dyersburg, TN metro area's air quality is rated Good based on 82.4% good air days. No unhealthy air days were recorded in 2024.

Air quality is generally acceptable. Unusually sensitive people should monitor real-time conditions at AirNow.gov during high-pollution events.

5-Year Air Quality Trend

Air quality is stable in the Dyersburg, TN metro. Best year: 2020 (293 good days).

Year Good Moderate Unhealthy Median AQI
2020 293 57 0 31
2021 242 107 0 39
2022 258 97 0 39
2023 267 93 0 39
2024 286 61 0 31

Metros with Similar Air Quality

Metro areas across the US with a similar median AQI to Dyersburg, TN.

Butte-Silver Bow, MT

AQI 31 · 70.5% good

31

Lewiston-Auburn, ME

AQI 31 · 92.6% good

31

Pahrump, NV

AQI 31 · 87.2% good

31

Urban Honolulu, HI

AQI 31 · 98.4% good

31

Athens, TN

AQI 32 · 78.9% good

32

Clearlake, CA

AQI 32 · 99.5% good

32

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Air Quality Guides

Learn more about air quality monitoring, pollutants, and health impacts.

Understanding AQI

What each AQI level means and who is most at risk.

Best & Worst City Air Quality

Metro area air quality rankings and what drives urban pollution.

Health Effects of Air Pollution

How PM2.5 and ozone exposure affects respiratory and cardiovascular health.

Frequently Asked Questions

What is the air quality in the Dyersburg, TN metro area? ▼
The Dyersburg, TN metro area has a median Air Quality Index (AQI) of 31, rated "Good." 82.4% of monitored days (286 out of 347) had good air quality in 2024.
How many unhealthy air days does Dyersburg, TN have? ▼
In 2024, the Dyersburg, TN metro area recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 92.
Is air quality in Dyersburg, TN getting better or worse? ▼
Air quality in the Dyersburg, TN metro is stable based on 5-year trends (2020-2024). Best year: 2020 with 293 good days. Worst year: 2021 with 242 good days.
What does AQI 31 mean for health? ▼
An AQI of 31 is "Good" — air quality is satisfactory and poses little or no health risk. This is the best category on the EPA's AQI scale.
What is the 90th percentile AQI for Dyersburg, TN? ▼
The 90th percentile AQI for the Dyersburg, TN metro area is 53, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 92 (Moderate).
How does Dyersburg, TN compare to other metro areas? ▼
The Dyersburg, TN metro has 82.4% good air days. Similar metros: Butte-Silver Bow, MT (70.5% good), Lewiston-Auburn, ME (92.6% good), Pahrump, NV (87.2% good).

Data Sources

Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset, 2020–2024. The AQS collects ambient air monitoring data from state, local, and tribal monitoring agencies across the United States.

Metrics: Air Quality Index (AQI) is calculated using EPA-standard breakpoints for six criteria pollutants: PM2.5, PM10, Ozone, NO2, CO, and SO2. Median AQI, max AQI, and 90th percentile AQI are computed from daily measurements. Good days percentage reflects days with AQI 0–50.

Coverage: 501 metro areas (Core Based Statistical Areas). Only metros with active monitoring stations are included. Unmonitored areas are not represented.

Read our methodology — how this data is sourced, computed, and verified.

Source: U.S. EPA — AirNow / AQS Air Quality Index readings and pollutant concentrations · 2025