Metro area air quality · 2025

Wabash, IN

Median AQI 34 (Good). 92.0% of monitored days rated Good across this metro's EPA monitoring network.

34
Median AQI
92.0%
Good-air days
0
Unhealthy days
90%
Cleaner than US metros

Wabash, IN posted a 2025 median AQI of 34 (Good) with 92.0% Good days

According to the U.S. EPA Air Quality System, the Wabash, IN CBSA recorded a median AQI of 34 across 351 monitored days in 2025, with 92.0% rated Good and 0 unhealthy or worse. This is an annual metro comparison, not a live advisory.

Data source EPA Air Quality System (AQS)

Cleaner than US metros
The Wabash, IN CBSA's 92.0% Good-day share places it cleaner than 90% of US metros in 2025.
Closest median-AQI peer
Arkadelphia, AR (96.7% Good, median AQI 34) is the closest nationwide median-AQI peer to Wabash, IN.
2020–2025 Good-day shift
Wabash, IN's Good-day share moved -0.6 points from 2020 to 2025 (median AQI -1).
Median AQI
Median AQI: 34

Aggregated from EPA Air Quality System (2025), 351 monitored days. EPA AQS →

The verdict

Wabash, IN sits in the upper Good-day tercile among EPA CBSA metros on this site (92.0% of 351 monitored days). On the EPA scale the metro runs good, among the cleanest 10% of US metros, with a median AQI of 34 and 92.0% of 351 monitored days in the Good band.

34
median AQI · Good
92.0%
days rated Good
90%
cleaner than US metros
112
worst single reading

No day crossed into the Unhealthy tier across the metro's monitors in 2025.

Annual release change

What changed in the 2025 EPA annual release

2024 → 2025
  • Wabash, IN metro's Good-day share rose from 88.8% to 92.3% between the 2024 and 2025 EPA annual releases, a change of +3.5 percentage points.
  • Wabash, IN metro's peak single-day AQI rose from 84 to 112 between the 2024 and 2025 EPA annual releases, a change of +28 points.

Compared against 365 monitored days in 2024 and 350 in 2025. These are arithmetic differences between two stored EPA annual summaries, not a cause claim or a live advisory.

National release changes Two-year CSV

Wabash, IN sits in the upper Good-day tercile among EPA CBSA metros on this site (92.0% of 351 monitored days). Signature read: 92.0% Good-day share (high tercile vs CBSA corpus). Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 34 over 351 measured days in 2025 (Good / Excellent). The monitored-day split lands at 323 Good (92%), 27 Moderate (8%), and 1 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 49; the highest single-day reading hit 112 (USG).

Across 2020–2025, Good-day share shifted -0.6 points and median AQI moved -1 (stable). No Unhealthy-tier days appear in this annual dataset. Metros with comparable AQI profiles include Arkadelphia, AR (96.7% good, AQI 34); Augusta-Waterville, ME (85.2% good, AQI 34); Beatrice, NE (75.8% good, AQI 34).

Best and worst city air quality →

Air Quality Summary

Median AQI

34

Good

Good Days

92.0%

323 of 351 days

Max AQI

112

USG

Health Grade

Excellent

90th pct: 49

AQI Day Breakdown (2025)

Distribution of 351 monitored days across EPA AQI categories.

Good

323

92%

Moderate

27

8%

USG

1

0%

Unhealthy

0

0%

Very Unhealthy

0

0%

Hazardous

0

0%

Health Impact Assessment

Excellent

The Wabash, IN metro area's air quality is rated Excellent based on 92.0% 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 Wabash, IN metro compare?

How Wabash, IN compares

Good-day share better than typical
Wabash, IN 92.0%
Arkadelphia, AR 96.7%
Typical US metro 70.6%
Median AQI better than typical
Wabash, IN 34
Arkadelphia, AR 34
Typical US metro 41
Unhealthy days / yr better than typical
Wabash, IN 0
Arkadelphia, AR 0
Typical US metro 1

5-Year Air Quality Trend

Air quality is stable in the Wabash, IN metro. Highest Good-day share: 2020 (92.8%, 337 of 363 monitored days).

Year Good Moderate Unhealthy Median AQI
2020 337 26 0 35
2021 327 34 0 35
2022 334 27 0 37
2023 313 48 0 36
2024 324 41 0 36
2025 323 27 0 34

Metros with a similar median AQI

CBSA peers nationwide whose annual median AQI sits near Wabash, IN (34).

Arkadelphia, AR

Median AQI 34 · 96.7% Good-day share

34

Augusta-Waterville, ME

Median AQI 34 · 85.2% Good-day share

34

Beatrice, NE

Median AQI 34 · 75.8% Good-day share

34

Dyersburg, TN

Median AQI 34 · 76.9% Good-day share

34

Erie, PA

Median AQI 34 · 76.7% Good-day share

34

Grand Island, NE

Median AQI 34 · 82.5% Good-day share

34

Metros with similar unhealthy-day exposure

A second relationship type: metros whose unhealthy-or-worse day count is closest to Wabash, IN's 0 (independent of median AQI).

Aberdeen, SD

0 unhealthy-or-worse days · median AQI 27

27

Aberdeen, WA

0 unhealthy-or-worse days · median AQI 22

22

Adrian, MI

0 unhealthy-or-worse days · median AQI 41

41

Akron, OH

0 unhealthy-or-worse days · median AQI 45

45

Albany, GA

0 unhealthy-or-worse days · median AQI 46

46

Albany, OR

0 unhealthy-or-worse days · median AQI 27

27

Frequently Asked Questions

How many unhealthy air days does Wabash, IN have? ▼
In 2025, the Wabash, IN metro area recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 112.
What is the air quality in the Wabash, IN metro area? ▼
The Wabash, IN metro area has a median Air Quality Index (AQI) of 34, rated "Good." 92.0% of monitored days (323 out of 351) had good air quality in 2025.
Is air quality in Wabash, IN getting better or worse? ▼
Air quality in the Wabash, IN metro is stable across floor-qualifying years (2020-2025); years with fewer than 100 monitored days are excluded from that direction. Highest qualifying Good-day share: 2020 at 92.8% (337 of 363 days). Lowest qualifying Good-day share: 2023 at 86.7% (313 of 361 days).
What does AQI 34 mean for health? ▼
An AQI of 34 is "Good", air quality is satisfactory and poses little or no health risk. This is the best category on the EPA's AQI scale.
How does Wabash, IN compare to other metro areas? ▼
The Wabash, IN metro has 92.0% good air days. Similar metros: Arkadelphia, AR (96.7% good), Augusta-Waterville, ME (85.2% good), Beatrice, NE (75.8% good).
What is the 90th percentile AQI for Wabash, IN? ▼
The 90th percentile AQI for the Wabash, IN metro area is 49, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 112 (USG).

Data Sources

Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset for Wabash, IN, 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, Wabash, IN · 2020–2025