EnviroNearby

Creek County, Oklahoma air quality history

Daily Air Quality Index summaries from EPA monitors in Creek, Oklahoma, 2003–2025.

81%
Good days in 2025
42
Median daily AQI, 2025
0
Days above 100 in 2025
273
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Creek, Oklahoma on 273 days. 220 of those days (81%) were in the Good range, and the median daily AQI was 42. That median is about the same as the typical monitored county in Oklahoma (median 44 across 19 counties), and about the same as the typical monitored U.S. county (40). The main pollutant was ozone on 273 days. Across the years with fuller monitoring, the share of Good days rose: an average of 75% in 2003–2005 versus 78% in 2023–2025.

EPA did not report an AQI for every day of 2025 here (273 of 365 days). Figures describe monitored days only; seasonal monitoring (for example, ozone measured only in warmer months) can make a county look cleaner or dirtier than a full-year record would.

How the days broke down each year

Each bar is one year. The colored segments show the share of monitored days that fell in each AQI category.

Share of monitored days in each AQI category, by year0%25%50%75%100%2003: Good 182 of 264 days2003: Moderate 69 of 264 days2003: Unhealthy for Sensitive Groups 11 of 264 days2003: Unhealthy 2 of 264 days20032004: Good 298 of 365 days2004: Moderate 63 of 365 days2004: Unhealthy for Sensitive Groups 4 of 365 days2005: Good 273 of 361 days2005: Moderate 81 of 361 days2005: Unhealthy for Sensitive Groups 5 of 361 days2005: Unhealthy 2 of 361 days20052006: Good 268 of 358 days2006: Moderate 68 of 358 days2006: Unhealthy for Sensitive Groups 22 of 358 days2007: Good 286 of 355 days2007: Moderate 64 of 355 days2007: Unhealthy for Sensitive Groups 5 of 355 days20072008: Good 289 of 360 days2008: Moderate 69 of 360 days2008: Unhealthy for Sensitive Groups 2 of 360 days2009: Good 309 of 365 days2009: Moderate 52 of 365 days2009: Unhealthy for Sensitive Groups 4 of 365 days20092010: Good 298 of 356 days2010: Moderate 56 of 356 days2010: Unhealthy for Sensitive Groups 2 of 356 days2011: Good 251 of 364 days2011: Moderate 91 of 364 days2011: Unhealthy for Sensitive Groups 21 of 364 days2011: Unhealthy 1 of 364 days20112012: Good 249 of 347 days2012: Moderate 76 of 347 days2012: Unhealthy for Sensitive Groups 20 of 347 days2012: Unhealthy 2 of 347 days2013: Good 307 of 353 days2013: Moderate 44 of 353 days2013: Unhealthy for Sensitive Groups 2 of 353 days20132014: Good 320 of 351 days2014: Moderate 31 of 351 days2015: Good 322 of 349 days2015: Moderate 27 of 349 days20152016: Good 301 of 334 days2016: Moderate 33 of 334 days2017: Good 323 of 364 days2017: Moderate 41 of 364 days20172018: Good 303 of 344 days2018: Moderate 40 of 344 days2018: Unhealthy for Sensitive Groups 1 of 344 days2019: Good 331 of 356 days2019: Moderate 24 of 356 days2019: Unhealthy for Sensitive Groups 1 of 356 days20192020: Good 350 of 363 days2020: Moderate 13 of 363 days2021: Good 305 of 343 days2021: Moderate 37 of 343 days2021: Unhealthy for Sensitive Groups 1 of 343 days20212022: Good 220 of 279 days2022: Moderate 57 of 279 days2022: Unhealthy for Sensitive Groups 2 of 279 days2023: Good 196 of 249 days2023: Moderate 50 of 249 days2023: Unhealthy for Sensitive Groups 3 of 249 days20232024: Good 202 of 267 days2024: Moderate 61 of 267 days2024: Unhealthy for Sensitive Groups 3 of 267 days2024: Unhealthy 1 of 267 days2025: Good 220 of 273 days2025: Moderate 53 of 273 days2025
  • Good
  • Moderate
  • Unhealthy for Sensitive Groups
  • Unhealthy
  • Very Unhealthy
  • Hazardous

Typical and high-end AQI over time

The median is the middle day of the year. The 90th percentile is the level that only the highest 10% of days exceeded.

Median and 90th-percentile daily AQI, by year0501002003: 90th percentile AQI 842004: 90th percentile AQI 642005: 90th percentile AQI 772006: 90th percentile AQI 902007: 90th percentile AQI 672008: 90th percentile AQI 642009: 90th percentile AQI 612010: 90th percentile AQI 642011: 90th percentile AQI 872012: 90th percentile AQI 902013: 90th percentile AQI 582014: 90th percentile AQI 502015: 90th percentile AQI 492016: 90th percentile AQI 502017: 90th percentile AQI 512018: 90th percentile AQI 512019: 90th percentile AQI 482020: 90th percentile AQI 472021: 90th percentile AQI 512022: 90th percentile AQI 712023: 90th percentile AQI 642024: 90th percentile AQI 712025: 90th percentile AQI 612003: Median AQI 442004: Median AQI 372005: Median AQI 422006: Median AQI 372007: Median AQI 382008: Median AQI 392009: Median AQI 392010: Median AQI 382011: Median AQI 442012: Median AQI 422013: Median AQI 392014: Median AQI 372015: Median AQI 362016: Median AQI 392017: Median AQI 392018: Median AQI 362019: Median AQI 362020: Median AQI 352021: Median AQI 372022: Median AQI 432023: Median AQI 442024: Median AQI 442025: Median AQI 42200320052007200920112013201520172019202120232025
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 2025

On each monitored day, the AQI reflects whichever measured pollutant had the highest index. This counts how many days each pollutant set the AQI. A pollutant that was not measured here cannot appear.

PollutantDays as main pollutantShare of monitored days
Ozone273100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
2025273220530000426197Ozone
20242672026131004471179Ozone
20232491965030004464136Ozone
20222792205720004371112Ozone
20213433053710003751126Ozone
2020363350130000354793Ozone
20193563312410003648101Ozone
20183443034010003651115Ozone
2017364323410000395197Ozone
2016334301330000395087Ozone
20153493222700003649100Ozone
20143513203100003750100Ozone
20133533074420003958108Ozone
201234724976202004290159Ozone
201136425191211004487164Ozone
20103562985620003864112Ozone
20093653095240003961143Ozone
20083602896920003964115Ozone
20073552866450003867133Ozone
200635826868220003790150Ozone
20053612738152004277177Ozone
20043652986340003764112Ozone
200326418269112004484161Ozone

What this data can and can’t tell you

It is a county-level summary. EPA reports one AQI per day for the county, based on the monitors operating there. Air at a particular street, school or home can differ, especially near roads, industry or wildfire smoke.

It is not a health assessment. The AQI is EPA’s scale for communicating daily air quality. A county’s history can’t tell you what the health risk is for any particular person. For daily conditions and health guidance, see AirNow.

Rules change over time. EPA has revised AQI breakpoints, most recently for fine particles in 2024, so some year-to-year change can reflect the scale rather than the air.

Counties in Oklahoma with a similar median AQI in 2025

All monitored counties in Oklahoma

Source: U.S. EPA AirData, “Annual AQI by County” files for 2003–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem