Median AQI
32
Good
Alabama · County air quality · 2025
Elmore County, Alabama
Median AQI 32 (Good). 97.2% of monitored days rated Good, direct from EPA Air Quality System stations.
- 32
- Median AQI
- 97.2%
- Good-air days
- 0
- Unhealthy days
- 94%
- Cleaner than US counties
The verdict
According to EPA Air Quality System monitoring data, Elmore County's air is good on balance, among the cleanest 10% of US counties, a median AQI of 32 with 97.2% of 177 monitored days in the Good band, driven mainly by Ozone.
- 32
- median AQI · Good
- 97.2%
- days rated Good
- Ozone
- main pollutant
- 94%
- cleaner than US counties
Not one day crossed into the Unhealthy tier; the worst single reading was AQI 64.
Data updated July 2026
- Good · 172 d · 97.2%
- Moderate · 5 d · 2.8%
How did Elmore County's air break down in 2025?
Across 177 monitored days, 172 fell in the Good band (AQI 0–50) and 0 reached Unhealthy or worse. The worst single day peaked at AQI 64 (Moderate).
EPA AQS →Air quality data from EPA Air Quality System (2025). 177 days monitored. Median AQI: 32 (Good).
Insights: Elmore County, Alabama. EPA monitors recorded a median Air Quality Index of 32 across 177 measured days in 2025, earning a Good classification and a Excellent health grade. Of those days, 172 (97%) fell in the Good band (AQI 0–50), 5 (3%) 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 64 (Moderate). Residents averaged about 29.2 clean-air days per 30-day window during the monitoring year.
The full pollutant mix ranks as Ozone (177 days). Across the 2020–2025 trend window, good days shifted by -25 and the median AQI moved +1 points, placing the multi-year trajectory at stable. The worst single reading over the 2020–2025 window was AQI 64, moderate but never Unhealthy. Nearby counties show comparable readings: Baldwin (72.2% good, AQI 42); Clay (85.4% good, AQI 32); DeKalb (78.6% good, AQI 42); Etowah (63.5% good, AQI 45); Jefferson (36.8% good, AQI 53); Lawrence (100.0% good, AQI 23).
Air Quality Summary
Good Days
97.2%
172 of 177 monitored days
22.2pp vs 75% target
Max AQI Recorded
64
Moderate
Health Grade
Excellent
90th-pct AQI 46
Elmore County, Good days share 97.2%
National avg
Share of monitored days at AQI 0-50 (Good band).
Elmore 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 177 monitored days across EPA AQI categories.
Good
172
97%
Moderate
5
3%
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 Elmore County.
- Ozone · 177 days · 100.0%
Health Impact Assessment
Excellent
Elmore County's air quality is rated Excellent based on 97.2% good air days. No unhealthy air days were recorded in 2025.
Air quality was acceptable on 97.2% of monitored days in 2025, with a median AQI of 32. Unusually sensitive people can check real-time conditions at AirNow.gov during high-pollution events.
The dominant pollutant is Ozone, driving AQI on 177 of 177 monitored days.
5-Year Air Quality Trend
Air quality is stable in Elmore County. Best year: 2021 (238 good days).
| Year | Good | Moderate | USG | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|---|
| 2020 | 197 | 0 | 0 | 0 | 31 | 47 |
| 2021 | 238 | 3 | 0 | 0 | 32 | 87 |
| 2022 | 232 | 8 | 0 | 0 | 33 | 74 |
| 2023 | 221 | 17 | 0 | 0 | 38 | 90 |
| 2024 | 231 | 3 | 0 | 0 | 37 | 58 |
| 2025 | 172 | 5 | 0 | 0 | 32 | 64 |
How does Elmore County compare?
How Elmore County compares
Good-day share better than US avg
Elmore County 97.2%
Baldwin County, Alabama 72.2%
US average 76.5%
Median AQI better than US avg
Elmore County 32
Baldwin County, Alabama 42
US average 38
Unhealthy days / yr about average
Elmore County 0
Baldwin County, Alabama 0
US average 0
Other Counties in Alabama
Air quality comparison for nearby counties in Alabama.
Counties with Similar Air Quality
Counties across the US with a similar median AQI to Elmore County.
Archuleta County, Colorado
AQI 32 · 79.5% good
Clay County, Alabama
AQI 32 · 85.4% good
Harrison County, West Virginia
AQI 32 · 73.3% good
Klamath County, Oregon
AQI 32 · 71.3% good
Liberty County, Florida
AQI 32 · 97.7% good
Schoolcraft County, Michigan
AQI 32 · 89.4% good
What Elmore 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 32 means for exposure. Health guidance
- See how Elmore County ranks against every monitored U.S. county on Good-day share. County rankings
- Compare Elmore County with its Alabama neighbours before drawing a conclusion about the region. All of Alabama
Based on 177 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 Elmore County, Alabama? ▼
Elmore County has a median Air Quality Index (AQI) of 32, rated "Good." 97.2% of monitored days (172 out of 177) had good air quality in 2025.
What is the main pollutant in Elmore County? ▼
The primary pollutant in Elmore County is Ozone (O3), which was the main AQI driver on 177 days (100% of monitored days). Can trigger asthma, reduce lung function, and cause chest pain.
How many unhealthy air days does Elmore County have? ▼
In 2025, Elmore County recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 64.
Is the air quality in Elmore County getting better or worse? ▼
Air quality in Elmore County is stable based on 5-year trends (2020-2025). Best year: 2021 with 238 good days. Worst year: 2025 with 172 good days.
What does AQI 32 mean for health? ▼
Elmore County's median AQI of 32 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 Elmore County compare to other counties in Alabama? ▼
Elmore County has 97.2% good air days. Nearby counties in Alabama: Baldwin (72.2% good), Clay (85.4% good), DeKalb (78.6% good), Etowah (63.5% good), Jefferson (36.8% good), Lawrence (100.0% good).
What is the 90th percentile AQI in Elmore County? ▼
The 90th percentile AQI for Elmore County is 46, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 64 (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.