Median AQI
16
Good
Texas · County air quality · 2025
Potter County, Texas
Median AQI 16 (Good). 93.4% of monitored days rated Good, direct from EPA Air Quality System stations.
- 16
- Median AQI
- 93.4%
- Good-air days
- 0
- Unhealthy days
- 84%
- Cleaner than US counties
The verdict
According to EPA Air Quality System monitoring data, Potter County's air is good on balance, cleaner than most US counties, a median AQI of 16 with 93.4% of 228 monitored days in the Good band, driven mainly by PM2.5.
- 16
- median AQI · Good
- 93.4%
- days rated Good
- PM2.5
- main pollutant
- 84%
- cleaner than US counties
Not one day crossed into the Unhealthy tier; the worst single reading was AQI 85.
Data updated July 2026
- Good · 213 d · 93.4%
- Moderate · 15 d · 6.6%
How did Potter County's air break down in 2025?
Across 228 monitored days, 213 fell in the Good band (AQI 0–50) and 0 reached Unhealthy or worse. The worst single day peaked at AQI 85 (Moderate).
EPA AQS →Air quality data from EPA Air Quality System (2025). 228 days monitored. Median AQI: 16 (Good).
Insights: Potter County, Texas. EPA monitors recorded a median Air Quality Index of 16 across 228 measured days in 2025, earning a Good classification and a Excellent health grade. Of those days, 213 (93%) fell in the Good band (AQI 0–50), 15 (7%) registered Moderate readings, and 0 (0%) reached Unhealthy for Sensitive Groups. The 90th-percentile AQI settled at 41, while the worst single-day peak hit 85 (Moderate). Residents averaged about 28.0 clean-air days per 30-day window during the monitoring year.
The full pollutant mix ranks as PM2.5 (228 days). Across the 2020–2025 trend window, good days shifted by -94 and the median AQI moved -10 points, placing the multi-year trajectory at improving. The worst single reading over the 2020–2025 window was AQI 85, moderate but never Unhealthy. Nearby counties show comparable readings: Atascosa (58.0% good, AQI 45); Bell (61.3% good, AQI 47); Bexar (39.8% good, AQI 53); Bowie (57.3% good, AQI 47); Brazoria (84.8% good, AQI 33); Brazos (63.4% good, AQI 43).
Air Quality Summary
Good Days
93.4%
213 of 228 monitored days
18.4pp vs 75% target
Max AQI Recorded
85
Moderate
Health Grade
Excellent
90th-pct AQI 41
Potter County, Good days share 93.4%
National avg
Share of monitored days at AQI 0-50 (Good band).
Potter 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 228 monitored days across EPA AQI categories.
Good
213
93%
Moderate
15
7%
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 Potter County.
- PM2.5 · 228 days · 100.0%
Health Impact Assessment
Excellent
Potter County's air quality is rated Excellent based on 93.4% good air days. No unhealthy air days were recorded in 2025.
Air quality was acceptable on 93.4% of monitored days in 2025, with a median AQI of 16. Unusually sensitive people can check real-time conditions at AirNow.gov during high-pollution events.
The dominant pollutant is PM2.5, driving AQI on 228 of 228 monitored days.
5-Year Air Quality Trend
Air quality is improving in Potter County. Best year: 2023 (318 good days).
| Year | Good | Moderate | USG | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|---|
| 2020 | 307 | 34 | 0 | 0 | 26 | 85 |
| 2021 | 293 | 61 | 0 | 0 | 31 | 83 |
| 2022 | 312 | 46 | 1 | 0 | 31 | 108 |
| 2023 | 318 | 40 | 2 | 0 | 26 | 125 |
| 2024 | 294 | 41 | 1 | 0 | 29 | 138 |
| 2025 | 213 | 15 | 0 | 0 | 16 | 85 |
How does Potter County compare?
How Potter County compares
Good-day share better than US avg
Potter County 93.4%
Atascosa County, Texas 58.0%
US average 76.5%
Median AQI better than US avg
Potter County 16
Atascosa County, Texas 45
US average 38
Unhealthy days / yr about average
Potter County 0
Atascosa County, Texas 0
US average 0
Other Counties in Texas
Air quality comparison for nearby counties in Texas.
Counties with Similar Air Quality
Counties across the US with a similar median AQI to Potter County.
Chaves County, New Mexico
AQI 16 · 94.4% good
Lake County, California
AQI 17 · 100.0% good
Pacific County, Washington
AQI 15 · 100.0% good
Sanders County, Montana
AQI 15 · 100.0% good
Apache County, Arizona
AQI 14 · 99.6% good
Dawson County, Montana
AQI 14 · 95.0% good
What Potter 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 16 means for exposure. Health guidance
- See how Potter County ranks against every monitored U.S. county on Good-day share. County rankings
- Compare Potter County with its Texas neighbours before drawing a conclusion about the region. All of Texas
Based on 228 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 Potter County, Texas? ▼
Potter County has a median Air Quality Index (AQI) of 16, rated "Good." 93.4% of monitored days (213 out of 228) had good air quality in 2025.
What is the main pollutant in Potter County? ▼
The primary pollutant in Potter County is Fine Particles (PM2.5), which was the main AQI driver on 228 days (100% of monitored days). Penetrates deep into lungs and bloodstream. Linked to heart disease and premature death.
How many unhealthy air days does Potter County have? ▼
In 2025, Potter County recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 85.
Is the air quality in Potter County getting better or worse? ▼
Air quality in Potter County is improving based on 5-year trends (2020-2025). Best year: 2023 with 318 good days. Worst year: 2025 with 213 good days.
What does AQI 16 mean for health? ▼
Potter County's median AQI of 16 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 Potter County compare to other counties in Texas? ▼
Potter County has 93.4% good air days. Nearby counties in Texas: Atascosa (58.0% good), Bell (61.3% good), Bexar (39.8% good), Bowie (57.3% good), Brazoria (84.8% good), Brazos (63.4% good).
What is the 90th percentile AQI in Potter County? ▼
The 90th percentile AQI for Potter County is 41, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 85 (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.