Quapaw, Oklahoma Air Quality
Quapaw has a median AQI of 49, earning an air quality grade of B+ — good air quality that ranks better than 14% 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, Quapaw recorded 145 good air quality days (53% of monitored days) and 1 unhealthy days.
Population: 728 • County: Ottawa
Current AQI
Quick Facts
| Current AQI | 33 — Good |
| Air Quality Grade | B+ |
| Median AQI (2025) | 49 |
| vs. U.S. Cities | Better than 14% |
| Primary Pollutant | PM2.5 |
| Unhealthy Days/Year | 1 |
| 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 Quapaw is sourced from the Miami monitoring area, located approximately 4 miles from city center. This EPA-certified station continuously tracks particulate matter (PM2.5), the primary driver of air quality alerts in this area.
Quapaw tends to see elevated PM2.5 readings during fall and winter months when temperature inversions trap pollutants near the surface. Wood burning, vehicle exhaust, and reduced wind speeds compound the effect. Residents with respiratory conditions should monitor forecasts closely between November and February.
AQI Trend (10 Years)
Air Quality Days by Year
Quapaw Median AQI by Year
Annual EPA air quality data for Quapaw — median AQI, day-category breakdown, and primary pollutant per year.
| Year | Median AQI | Good Days | Unhealthy Days | Max AQI | Primary Pollutant |
|---|---|---|---|---|---|
| 2025 | 49 | 145 | 2 | 305 | PM2.5 |
| 2024 | 51 | 181 | 1 | 288 | PM2.5 |
| 2023 | 54 | 141 | 8 | 162 | PM2.5 |
| 2022 | 53 | 151 | 11 | 238 | PM2.5 |
| 2021 | 59 | 90 | 17 | 169 | PM2.5 |
| 2020 | 46 | 202 | 2 | 154 | PM2.5 |
| 2019 | 45 | 222 | 1 | 104 | PM2.5 |
| 2018 | 52 | 156 | 1 | 107 | PM2.5 |
| 2017 | 51 | 175 | — | 94 | PM2.5 |
| 2016 | 47 | 206 | — | 81 | PM2.5 |
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 Quapaw Air Quality
What is the air quality in Quapaw today?
The current AQI in Quapaw is 33, 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 Quapaw getting better or worse?
Air quality in Quapaw has been stable. The median AQI has risen 2 points (from 47 in 2016 to 49 in 2025).
What is the most common air pollutant in Quapaw?
PM2.5 is the primary air pollutant in Quapaw, responsible for 192 days (70% of monitored days) in 2025. Particulate matter originates from vehicle exhaust, wildfires, construction, and industrial activity.
How many unhealthy air days does Quapaw have per year?
In 2025, Quapaw recorded 53% good air quality days (145 days) out of 273 monitored days. There were 1 Unhealthy for Sensitive Groups days and 0 Unhealthy days (AQI above 100). The most severe category (Very Unhealthy or Hazardous) occurred on 1 day. The highest single-day AQI recorded was 305.
What air quality grade does Quapaw receive?
Quapaw receives an air quality grade of B+, placing it better than 14% of US cities. This is based on a median AQI of 49 in 2025, with 145 good air quality days. The EPA monitors air quality in this area continuously using certified monitoring stations.
Air Quality Grade
Better than 14% of US cities
Nearby Cities
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National Rankings
See how Quapaw compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Quapaw
Quapaw sees its worst PM2.5 during winter temperature inversions when particulates get trapped near ground level. A unit with True HEPA and an auto-mode sensor is most effective for responding to these spikes.
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