Hendrix, Oklahoma Air Quality
Hendrix has a median AQI of 38, earning an air quality grade of A — excellent air quality that ranks better than 70% of US cities. Air quality has remained relatively stable over the past decade. Ground-level ozone is the primary concern, typically peaking on warm sunny days due to vehicle and industrial emissions. In 2018, Hendrix recorded 257 good air quality days (85% of monitored days) and 3 unhealthy days.
Population: 63 • County: Bryan
Current AQI
Quick Facts
| Current AQI | 40 — Good |
| Air Quality Grade | A |
| Median AQI (2018) | 38 |
| vs. U.S. Cities | Better than 70% |
| Primary Pollutant | Ozone |
| Unhealthy Days/Year | 3 |
| 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 Hendrix is sourced from the Healdton monitoring area, located approximately 70 miles from city center. This EPA-certified station continuously tracks ground-level ozone, the primary driver of air quality alerts in this area.
Hendrix 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
Hendrix Median AQI by Year
Annual EPA air quality data for Hendrix — median AQI, day-category breakdown, and primary pollutant per year.
| Year | Median AQI | Good Days | Unhealthy Days | Max AQI | Primary Pollutant |
|---|---|---|---|---|---|
| 2018 | 38 | 257 | 3 | 119 | Ozone |
| 2017 | 39 | 262 | — | 93 | Ozone |
Source: EPA Air Quality System (AQS) annual summaries. "Unhealthy Days" includes Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, and Hazardous categories.
2018 Air Quality Summary
Primary Pollutant Days (2018)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Hendrix Air Quality
What is the air quality in Hendrix today?
The current AQI in Hendrix is 40, 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 Hendrix getting better or worse?
Air quality in Hendrix has been stable. The median AQI has dropped 1 points (from 39 in 2017 to 38 in 2018).
What is the most common air pollutant in Hendrix?
Ozone is the primary air pollutant in Hendrix, responsible for 301 days (100% of monitored days) in 2018. Ground-level ozone forms when sunlight reacts with emissions from vehicles and industry, typically peaking on hot summer afternoons.
How many unhealthy air days does Hendrix have per year?
In 2018, Hendrix recorded 85% good air quality days (257 days) out of 301 monitored days. There were 3 Unhealthy for Sensitive Groups days and 0 Unhealthy days (AQI above 100). The highest single-day AQI recorded was 119.
What air quality grade does Hendrix receive?
Hendrix receives an air quality grade of A, placing it better than 70% of US cities. This is based on a median AQI of 38 in 2018, with 257 good air quality days. The EPA monitors air quality in this area continuously using certified monitoring stations.
Air Quality Grade
Better than 70% of US cities
Nearby Cities
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National Rankings
See how Hendrix compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Hendrix
Ozone is Hendrix's primary pollutant. Standard HEPA filters don't capture ozone molecules — you need activated carbon or PECO technology to chemically break them down. We highlight those units here.
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