Metro area air quality · 2025
Emporia, KS
Median AQI 31 (Good). 82.8% of monitored days rated Good across this metro's EPA monitoring network.
- 31
- Median AQI
- 82.8%
- Good-air days
- 0
- Unhealthy days
Emporia, KS posted a 2025 median AQI of 31 (Good) with 82.8% Good days
According to the U.S. EPA Air Quality System, the Emporia, KS CBSA recorded a median AQI of 31 across 99 monitored days in 2025, with 82.8% rated Good and 0 unhealthy or worse. This is an annual metro comparison, not a live advisory.
Data source EPA Air Quality System (AQS)
- Closest median-AQI peer
- Athens, OH (83.4% Good, median AQI 31) is the closest nationwide median-AQI peer to Emporia, KS.
- 2020–2025 Good-day shift
- Emporia, KS's Good-day share moved -8.1 points from 2020 to 2025 (median AQI +7).
- Median AQI
- Median AQI: 31
- Good days
- Good days: 82.8%
Aggregated from EPA Air Quality System (2025), 99 monitored days. EPA AQS →
The verdict
The Emporia, KS metro runs good on the EPA scale, a median AQI of 31 with 82.8% of 99 monitored days in the Good band.
- 31
- median AQI · Good
- 82.8%
- days rated Good
- 95
- worst single reading
No day crossed into the Unhealthy tier across the metro's monitors in 2025.
Annual release change
What changed in the 2024 EPA annual release
- Emporia, KS metro's Good-day share rose from 83.8% to 86.9% between the 2023 and 2024 EPA annual releases, a change of +3.1 percentage points.
- Emporia, KS metro's peak single-day AQI rose from 79 to 94 between the 2023 and 2024 EPA annual releases, a change of +15 points.
Insights: Emporia, KS metro. Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 31 over 99 measured days in 2025, which corresponds to a Good band and a Good metro-wide health grade. The monitored-day split lands at 82 Good days (83%), 17 Moderate (17%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 54 while the highest single-day reading hit 95 (Moderate). Metro residents averaged roughly 24.8 clean-air days per 30-day window across the reporting year.
Across the 2020–2025 trend window, the share of monitored days rated Good shifted by -8.1 points (measured against 121 monitored days in 2020 and 99 in 2025, so raw day counts are not comparable) and the median AQI moved +7 points, which classifies the multi-year trajectory as worsening. The metro recorded no Unhealthy-tier days in this annual dataset. Metros with comparable AQI profiles include Athens, OH (83.4% good, AQI 31); Bellingham, WA (94.0% good, AQI 31); Clearlake, CA (99.2% good, AQI 31).
Air Quality Summary
Median AQI
31
Good
Good Days
82.8%
82 of 99 days
Max AQI
95
Moderate
Health Grade
Good
90th pct: 54
AQI Day Breakdown (2025)
Distribution of 99 monitored days across EPA AQI categories.
Good
82
83%
Moderate
17
17%
USG
0
0%
Unhealthy
0
0%
Very Unhealthy
0
0%
Hazardous
0
0%
Health Impact Assessment
The Emporia, KS metro area's air quality is rated Good based on 82.8% good air days. No unhealthy air days were recorded in 2025.
Air quality is generally acceptable. Unusually sensitive people should monitor real-time conditions at AirNow.gov during high-pollution events.
How does the Emporia, KS metro compare?
How Emporia, KS compares
5-Year Air Quality Trend
Air quality is worsening in the Emporia, KS metro. Highest Good-day share: 2022 (90.9%, 110 of 121 monitored days).
| Year | Good | Moderate | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|
| 2020 | 110 | 11 | 0 | 24 | 63 |
| 2021 | 102 | 18 | 0 | 27 | 99 |
| 2022 | 110 | 11 | 0 | 25 | 66 |
| 2023 | 98 | 19 | 0 | 29 | 79 |
| 2024 | 106 | 16 | 0 | 29 | 94 |
| 2025 | 82 | 17 | 0 | 31 | 95 |
Metros with a similar median AQI
CBSA peers nationwide whose annual median AQI sits near Emporia, KS (31).
Athens, OH
Median AQI 31 · 83.4% Good-day share
Bellingham, WA
Median AQI 31 · 94.0% Good-day share
Clearlake, CA
Median AQI 31 · 99.2% Good-day share
Coeur d'Alene, ID
Median AQI 31 · 77.8% Good-day share
Moscow, ID
Median AQI 31 · 83.4% Good-day share
Cookeville, TN
Median AQI 30 · 90.0% Good-day share
Metros with similar unhealthy-day exposure
A second relationship type: metros whose unhealthy-or-worse day count is closest to Emporia, KS's 0 (independent of median AQI).
Aberdeen, SD
0 unhealthy-or-worse days · median AQI 27
Aberdeen, WA
0 unhealthy-or-worse days · median AQI 22
Adrian, MI
0 unhealthy-or-worse days · median AQI 41
Akron, OH
0 unhealthy-or-worse days · median AQI 45
Albany, GA
0 unhealthy-or-worse days · median AQI 46
Albany, OR
0 unhealthy-or-worse days · median AQI 27
More Air Quality Data
Explore EPA air quality rankings and guides across U.S. metros and counties.
Cleanest Metro Areas
U.S. metros ranked by their share of Good air-quality days.
Worst Air Quality
Counties and metros with the most unhealthy air days.
All Metro Areas
Annual AQI by CBSA for every monitored U.S. metro area.
Best and Worst City Air
What drives urban air quality and how metro areas compare.
Air Quality Guides
Frequently Asked Questions
What is the air quality in the Emporia, KS metro area? ▼
How many unhealthy air days does Emporia, KS have? ▼
Is air quality in Emporia, KS getting better or worse? ▼
What does AQI 31 mean for health? ▼
What is the 90th percentile AQI for Emporia, KS? ▼
How does Emporia, KS compare to other metro areas? ▼
Data Sources
Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset, 2020–2025. See our methodology for how AQI, median, and coverage figures are computed.
Read our methodology , how this data is sourced, computed, and verified.
Source: U.S. EPA Air Quality System (AQS) Annual AQI by CBSA summary files (metro-level) · 2020–2025
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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.