Median AQI
47
Good
Missouri · County air quality · 2025
Jackson County, Missouri
Median AQI 47 (Good). 57.3% of monitored days rated Good, direct from EPA Air Quality System stations.
- 47
- Median AQI
- 57.3%
- Good-air days
- 2
- Unhealthy days
- 12%
- Cleaner than US counties
Jackson County's 2025 annual median AQI is 47 (Good), with 57.3% Good days
According to the U.S. EPA Air Quality System, Jackson County, Missouri posted a 2025 median AQI of 47 (Good) across 365 monitored days, with 57.3% rated Good and 2 unhealthy or worse. This is an annual comparison, not today's advisory.
Data source EPA Air Quality System (AQS)
- Cleaner than US
- Jackson County's 57.3% Good-day share places it cleaner than 12% of US counties in 2025.
- Closest median-AQI peer
- Bonner County (56.2% Good, median AQI 47) is the closest nationwide median-AQI peer to Jackson County.
- 2020–2025 trend
- Jackson County's floor-qualifying Good-day share is improving from 2020 to 2025 (47.8% → 57.4%).
- Median AQI
- Median AQI: 47
The verdict
According to EPA Air Quality System monitoring data, Jackson County's air is good on balance, among the more polluted 10% of US counties, a median AQI of 47 with 57.3% of 365 monitored days in the Good band, driven mainly by PM2.5.
- 47
- median AQI · Good
- 57.3%
- days rated Good
- PM2.5
- main pollutant
- 12%
- cleaner than US counties
2 days reached Unhealthy or worse; the worst single reading hit AQI 293.
Annual release change
What changed in the 2025 EPA annual release
- Jackson County's peak single-day AQI rose from 109 to 293 between the 2024 and 2025 EPA annual releases, a change of +184 points.
- Jackson County's Good-day share fell from 59.3% to 57.3% between the 2024 and 2025 EPA annual releases, a change of -2.1 percentage points.
- Jackson County's Unhealthy-category days rose from 0 to 1 between the 2024 and 2025 EPA annual releases, a change of +1 days.
Data updated August 2026
- Good · 209 d · 57.3%
- Moderate · 153 d · 41.9%
- USG · 1 d · 0.3%
- Unhealthy · 1 d · 0.3%
- Very Unhealthy · 1 d · 0.3%
How did Jackson County's air break down in 2025?
Across 365 monitored days, 209 fell in the Good band (AQI 0–50) and 2 reached Unhealthy or worse. The worst single day peaked at AQI 293 (Very Unhealthy).
EPA AQS →Air quality data from EPA Air Quality System (2025). 365 days monitored. Median AQI: 47 (Good).
Insights: Jackson County, Missouri. EPA monitors recorded a median Air Quality Index of 47 across 365 measured days in 2025, earning a Good classification and a Moderate health grade. Of those days, 209 (57%) fell in the Good band (AQI 0–50), 153 (42%) registered Moderate readings, and 1 (0%) reached Unhealthy for Sensitive Groups. The 90th-percentile AQI settled at 63, while the worst single-day peak hit 293 (Very Unhealthy). Residents averaged about 17.2 clean-air days per 30-day window during the monitoring year.
The full pollutant mix ranks as PM2.5 (287 days), PM10 (46 days), NO2 (32 days). Across the 2020–2025 trend window, the share of monitored days rated Good shifted by +9.4 points and the median AQI moved -4 points, placing the multi-year trajectory at improving. The annual record contains 2 days at Unhealthy or worse. On those days, the EPA recommends that sensitive groups limit prolonged outdoor exertion. Nearby counties show comparable readings: Andrew (86.9% good, AQI 40); Boone (93.2% good, AQI 37); Buchanan (56.4% good, AQI 46); Callaway (89.6% good, AQI 41); Cass (77.6% good, AQI 41); Cedar (81.6% good, AQI 39).
Air Quality Summary
Good Days
57.3%
209 of 365 monitored days
-17.7pp vs 75% target
Max AQI Recorded
293
Very Unhealthy
Health Grade
Moderate
90th-pct AQI 63
Jackson County, Good days share 57.3%
National avg
Share of monitored days at AQI 0-50 (Good band).
Jackson County, Unhealthy-or-worse share 5.5%
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 365 monitored days across EPA AQI categories.
Good
209
57%
Moderate
153
42%
USG
1
0%
Unhealthy
1
0%
Very Unhealthy
1
0%
Hazardous
0
0%
Pollutant Breakdown
Days where each pollutant was the primary driver of AQI readings in Jackson County.
- PM2.5 · 287 days · 78.6%
- PM10 · 46 days · 12.6%
- NO₂ · 32 days · 8.8%
Health Impact Assessment
Moderate
Jackson County's air quality is rated Moderate based on 57.3% good air days. There were 2 unhealthy days in 2025 when outdoor activity should be limited.
Air quality reached unhealthy levels on 2 days in 2025 (1 Unhealthy, 1 Very Unhealthy). Sensitive groups, including people with asthma, COPD, cardiovascular conditions, children, and adults over 65, should review the daily breakdown below and follow local air-quality advisories on high-AQI days.
Sensitive group advisory
People with asthma, COPD, heart disease, children, pregnant women, and adults 65+ should follow EPA AQI alerts daily and limit outdoor exertion when AQI exceeds 100. Real-time conditions: airnow.gov.
The dominant pollutant is PM2.5, driving AQI on 287 of 365 monitored days.
5-Year Air Quality Trend
Air quality is improving in Jackson County. Highest Good-day share: 2024 (59.3%, 213 of 359 monitored days).
| Year | Good | Moderate | USG | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|---|
| 2020 | 175 | 188 | 2 | 1 | 51 | 159 |
| 2021 | 132 | 228 | 5 | 0 | 53 | 147 |
| 2022 | 160 | 205 | 0 | 0 | 52 | 93 |
| 2023 | 171 | 192 | 1 | 1 | 52 | 155 |
| 2024 | 213 | 145 | 1 | 0 | 46 | 109 |
| 2025 | 209 | 153 | 1 | 1 | 47 | 293 |
How does Jackson County compare?
How Jackson County compares
Good-day share worse than US avg
Jackson County 57.3%
Bonner County, Idaho 56.2%
US average 76.0%
Median AQI worse than US avg
Jackson County 47
Bonner County, Idaho 47
US average 39
Unhealthy days / yr worse than US avg
Jackson County 2
Bonner County, Idaho 0
US average 1
Counties with a similar median AQI
Nationwide peers within about the same annual median AQI as Jackson County (47), not geographic neighbors.
Bonner County, Idaho
Median AQI 47 · 56.2% Good-day share
Calcasieu County, Louisiana
Median AQI 47 · 62.2% Good-day share
Charleston County, South Carolina
Median AQI 47 · 60.8% Good-day share
Chatham County, Georgia
Median AQI 47 · 58.6% Good-day share
DeKalb County, Georgia
Median AQI 47 · 58.4% Good-day share
Denton County, Texas
Median AQI 47 · 57.8% Good-day share
Same primary pollutant: PM2.5
PM2.5 led the AQI on the most monitored days here. These peers share that driver and the closest Good-day share (a second relationship type beyond median-AQI neighbors).
Columbia County, Florida
57.3% Good-day share · median AQI 48
Dougherty County, Georgia
57.3% Good-day share · median AQI 46
Sedgwick County, Kansas
57.5% Good-day share · median AQI 48
Cleveland County, Oklahoma
56.9% Good-day share · median AQI 48
Hall County, Georgia
57.7% Good-day share · median AQI 46
Pittsburg County, Oklahoma
56.7% Good-day share · median AQI 48
Missouri counties on the map
Geographic containment only, other monitored counties in Missouri, independent of AQI or pollutant match.
What Jackson County's air means for you
On most days the air here is fine, but PM2.5 drives 2 unhealthy-or-worse days a year that sensitive groups should plan around.
- Sensitive groups (asthma, heart conditions, children, older adults) should check the AQI on high-PM2.5 days, the guide explains what a median of 47 means for exposure. Health guidance
- See how Jackson County ranks against every monitored U.S. county on Good-day share. County rankings
- Compare Jackson County with its Missouri neighbours before drawing a conclusion about the region. All of Missouri
Based on 365 EPA-monitored days in 2025; figures reflect only days the monitors reported. Source: EPA Air Quality System annual summaries.
Keep exploring the annual AQI record
Air-quality reading list
Frequently Asked Questions
What is the air quality in Jackson County, Missouri? ▼
Jackson County has a median Air Quality Index (AQI) of 47, rated "Good." 57.3% of monitored days (209 out of 365) had good air quality in 2025.
What is the main pollutant in Jackson County? ▼
The primary pollutant in Jackson County is Fine Particles (PM2.5), which was the main AQI driver on 287 days (79% of monitored days). Penetrates deep into lungs and bloodstream. Linked to heart disease and premature death.
How many unhealthy air days does Jackson County have? ▼
In 2025, Jackson County recorded 2 unhealthy air days (1 Unhealthy, 1 Very Unhealthy, 0 Hazardous). The maximum AQI reached 293.
Is the air quality in Jackson County getting better or worse? ▼
Air quality in Jackson County is improving across floor-qualifying years (2020-2025); years with fewer than 100 monitored days are excluded from that direction. Highest qualifying Good-day share: 2024 at 59.3% (213 of 359 days). Lowest qualifying Good-day share: 2021 at 36.2% (132 of 365 days).
What does AQI 47 mean for health? ▼
Jackson County's median AQI of 47 falls in the "Good" category. See the AQI category guide for what each range means for health.
How does Jackson County compare to other counties in Missouri? ▼
Jackson County has 57.3% good air days. Nearby counties in Missouri: Andrew (86.9% good), Boone (93.2% good), Buchanan (56.4% good), Callaway (89.6% good), Cass (77.6% good), Cedar (81.6% good).
What is the 90th percentile AQI in Jackson County? ▼
The 90th percentile AQI for Jackson County is 63, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 293 (Very Unhealthy).
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. Spotted a figure that looks wrong? Report a correction.
Source: U.S. EPA Air Quality System (AQS) Annual AQI by county summary files for Jackson County, Missouri · 2020–2025
Share this annual record
Send the source-year summary or download its ready-to-use data card.
Download this county's annual AQI row as CSV , with the same EPA fields and denominator shown on this page.
Every figure on PlainAirData 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.