Fairfield, Oklahoma Air Quality
Fairfield has a median AQI of 45, earning an air quality grade of A- — excellent air quality that ranks better than 27% of US cities. Air quality has remained relatively stable over the past decade. Particulate matter (PM2.5) is the primary concern, often linked to vehicle traffic, industrial activity, and wildfire smoke. In 2025, Fairfield recorded 106 good air quality days (59% of monitored days) and 2 unhealthy days.
Population: 690 • County: Adair
Current AQI
Quick Facts
| Current AQI | 3 — Good |
| Air Quality Grade | A- |
| Median AQI (2025) | 45 |
| vs. U.S. Cities | Better than 27% |
| Primary Pollutant | PM2.5 |
| Unhealthy Days/Year | 2 |
| 10-Year Trend | → Stable |
| Data Source | EPA AQS (historical) · AirNow (live) |
Health Recommendation
Air quality is satisfactory, and air pollution poses little or no risk.
It's a great day to be active outside!
5-Day AQI Forecast
Last 90 Days
Current Pollutant Levels
Real-time data from EPA AirNow
Local Air Quality Context
Air quality data for Fairfield is sourced from the ROLAND monitoring area, located approximately 30 miles from city center. This EPA-certified station continuously tracks particulate matter (PM2.5), the primary driver of air quality alerts in this area.
Fairfield has relatively consistent air quality throughout the year without a strong seasonal peak. Air quality is primarily influenced by local traffic, industrial activity, and regional weather patterns rather than a single seasonal driver.
AQI Trend (10 Years)
Air Quality Days by Year
Fairfield Median AQI by Year
Annual EPA air quality data for Fairfield — median AQI, day-category breakdown, and primary pollutant per year.
| Year | Median AQI | Good Days | Unhealthy Days | Max AQI | Primary Pollutant |
|---|---|---|---|---|---|
| 2025 | 45 | 106 | 2 | 184 | PM2.5 |
| 2024 | 47 | 209 | 4 | 138 | PM2.5 |
| 2023 | 51 | 172 | — | 100 | PM2.5 |
| 2022 | 43 | 274 | 4 | 122 | Ozone |
| 2021 | 40 | 291 | 1 | 117 | Ozone |
| 2020 | 36 | 297 | 1 | 152 | PM2.5 |
| 2019 | 40 | 295 | — | 88 | Ozone |
| 2018 | 42 | 263 | 2 | 145 | Ozone |
| 2017 | 44 | 238 | — | 97 | PM2.5 |
| 2016 | 43 | 271 | — | 91 | Ozone |
Source: EPA Air Quality System (AQS) annual summaries. "Unhealthy Days" includes Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, and Hazardous categories.
2025 Air Quality Summary
Primary Pollutant Days (2025)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Fairfield Air Quality
What is the air quality in Fairfield today?
The current AQI in Fairfield is 3, rated "Good". Air quality is good — outdoor activity is safe for everyone today. Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in Fairfield getting better or worse?
Air quality in Fairfield has been stable. The median AQI has risen 2 points (from 43 in 2016 to 45 in 2025).
What is the most common air pollutant in Fairfield?
PM2.5 is the primary air pollutant in Fairfield, responsible for 91 days (51% of monitored days) in 2025. Particulate matter originates from vehicle exhaust, wildfires, construction, and industrial activity.
How many unhealthy air days does Fairfield have per year?
In 2025, Fairfield recorded 59% good air quality days (106 days) out of 179 monitored days. There were 0 Unhealthy for Sensitive Groups days and 2 Unhealthy days (AQI above 100). The highest single-day AQI recorded was 184.
What air quality grade does Fairfield receive?
Fairfield receives an air quality grade of A-, placing it better than 27% of US cities. This is based on a median AQI of 45 in 2025, with 106 good air quality days. The EPA monitors air quality in this area continuously using certified monitoring stations.
Air Quality Grade
Better than 27% of US cities
Nearby Cities
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National Rankings
See how Fairfield compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Fairfield
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