Median AQI
43
Good
Oklahoma · County air quality · 2025
Creek County, Oklahoma
Median AQI 43 (Good). 80.1% of monitored days rated Good, direct from EPA Air Quality System stations.
- 43
- Median AQI
- 80.1%
- Good-air days
- 0
- Unhealthy days
- 53%
- Cleaner than US counties
The verdict
According to EPA Air Quality System monitoring data, Creek County's air is good on balance, cleaner than the median US county, a median AQI of 43 with 80.1% of 211 monitored days in the Good band, driven mainly by Ozone.
- 43
- median AQI · Good
- 80.1%
- days rated Good
- Ozone
- main pollutant
- 53%
- cleaner than US counties
Not one day crossed into the Unhealthy tier; the worst single reading was AQI 97.
Data updated July 2026
- Good · 169 d · 80.1%
- Moderate · 42 d · 19.9%
How did Creek County's air break down in 2025?
Across 211 monitored days, 169 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). 211 days monitored. Median AQI: 43 (Good).
Insights: Creek County, Oklahoma. EPA monitors recorded a median Air Quality Index of 43 across 211 measured days in 2025, earning a Good classification and a Good health grade. Of those days, 169 (80%) fell in the Good band (AQI 0–50), 42 (20%) registered Moderate readings, and 0 (0%) reached Unhealthy for Sensitive Groups. The 90th-percentile AQI settled at 58, while the worst single-day peak hit 97 (Moderate). Residents averaged about 24.0 clean-air days per 30-day window during the monitoring year.
The full pollutant mix ranks as Ozone (211 days). Across the 2020–2025 trend window, good days shifted by -181 and the median AQI moved +8 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: Adair (59.2% good, AQI 45); Canadian (78.0% good, AQI 44); Carter (80.9% good, AQI 33); Cleveland (53.7% good, AQI 49); Comanche (63.8% good, AQI 45); Dewey (56.6% good, AQI 49).
Air Quality Summary
Good Days
80.1%
169 of 211 monitored days
5.1pp vs 75% target
Max AQI Recorded
97
Moderate
Health Grade
Good
90th-pct AQI 58
Creek County, Good days share 80.1%
National avg
Share of monitored days at AQI 0-50 (Good band).
Creek 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 211 monitored days across EPA AQI categories.
Good
169
80%
Moderate
42
20%
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 Creek County.
- Ozone · 211 days · 100.0%
Health Impact Assessment
Good
Creek County's air quality is rated Good based on 80.1% good air days. No unhealthy air days were recorded in 2025.
Air quality was acceptable on 80.1% of monitored days in 2025, with a median AQI of 43. Unusually sensitive people can check real-time conditions at AirNow.gov during high-pollution events.
The dominant pollutant is Ozone, driving AQI on 211 of 211 monitored days.
5-Year Air Quality Trend
Air quality is worsening in Creek County. Best year: 2020 (350 good days).
| Year | Good | Moderate | USG | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|---|
| 2020 | 350 | 13 | 0 | 0 | 35 | 93 |
| 2021 | 305 | 37 | 1 | 0 | 37 | 126 |
| 2022 | 220 | 57 | 2 | 0 | 43 | 112 |
| 2023 | 196 | 50 | 3 | 0 | 44 | 136 |
| 2024 | 202 | 61 | 3 | 1 | 44 | 179 |
| 2025 | 169 | 42 | 0 | 0 | 43 | 97 |
How does Creek County compare?
How Creek County compares
Good-day share better than US avg
Creek County 80.1%
Adair County, Oklahoma 59.2%
US average 76.5%
Median AQI worse than US avg
Creek County 43
Adair County, Oklahoma 45
US average 38
Unhealthy days / yr about average
Creek County 0
Adair County, Oklahoma 2
US average 0
Other Counties in Oklahoma
Air quality comparison for nearby counties in Oklahoma.
Counties with Similar Air Quality
Counties across the US with a similar median AQI to Creek County.
Allegan County, Michigan
AQI 43 · 71.2% good
Allen County, Ohio
AQI 43 · 65.9% good
Ashtabula County, Ohio
AQI 43 · 81.2% good
Bell County, Kentucky
AQI 43 · 63.5% good
Boise County, Idaho
AQI 43 · 72.9% good
Brazos County, Texas
AQI 43 · 63.4% good
What Creek 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 43 means for exposure. Health guidance
- See how Creek County ranks against every monitored U.S. county on Good-day share. County rankings
- Compare Creek County with its Oklahoma neighbours before drawing a conclusion about the region. All of Oklahoma
Based on 211 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 Creek County, Oklahoma? ▼
Creek County has a median Air Quality Index (AQI) of 43, rated "Good." 80.1% of monitored days (169 out of 211) had good air quality in 2025.
What is the main pollutant in Creek County? ▼
The primary pollutant in Creek County is Ozone (O3), which was the main AQI driver on 211 days (100% of monitored days). Can trigger asthma, reduce lung function, and cause chest pain.
How many unhealthy air days does Creek County have? ▼
In 2025, Creek County recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 97.
Is the air quality in Creek County getting better or worse? ▼
Air quality in Creek County is worsening based on 5-year trends (2020-2025). Best year: 2020 with 350 good days. Worst year: 2025 with 169 good days.
What does AQI 43 mean for health? ▼
Creek County's median AQI of 43 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 Creek County compare to other counties in Oklahoma? ▼
Creek County has 80.1% good air days. Nearby counties in Oklahoma: Adair (59.2% good), Canadian (78.0% good), Carter (80.9% good), Cleveland (53.7% good), Comanche (63.8% good), Dewey (56.6% good).
What is the 90th percentile AQI in Creek County? ▼
The 90th percentile AQI for Creek County is 58, 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.