Metro area air quality · 2025

Harrison, AR

Median AQI 38 (Good). 90.4% of monitored days rated Good across this metro's EPA monitoring network.

38
Median AQI
90.4%
Good-air days
0
Unhealthy days
87%
Cleaner than US metros

Harrison, AR posted a 2025 median AQI of 38 (Good) with 90.4% Good days

According to the U.S. EPA Air Quality System, the Harrison, AR CBSA recorded a median AQI of 38 across 364 monitored days in 2025, with 90.4% 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 Harrison, AR CBSA's 90.4% Good-day share places it cleaner than 87% of US metros in 2025.
Closest median-AQI peer
Appleton, WI (72.3% Good, median AQI 38) is the closest nationwide median-AQI peer to Harrison, AR.
2020–2025 Good-day shift
Harrison, AR's Good-day share moved -6.3 points from 2020 to 2025 (median AQI +3).
Median AQI
Median AQI: 38

Aggregated from EPA Air Quality System (2025), 364 monitored days. EPA AQS →

The verdict

Harrison, AR sits in the upper Good-day tercile among EPA CBSA metros on this site (90.4% of 364 monitored days). On the EPA scale the metro runs good, cleaner than most US metros, with a median AQI of 38 and 90.4% of 364 monitored days in the Good band.

38
median AQI · Good
90.4%
days rated Good
87%
cleaner than US metros
91
worst single reading

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

Harrison, AR sits in the upper Good-day tercile among EPA CBSA metros on this site (90.4% of 364 monitored days). Signature read: 90.4% 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 38 over 364 measured days in 2025 (Good / Excellent). The monitored-day split lands at 329 Good (90%), 35 Moderate (10%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 50; the highest single-day reading hit 91 (Moderate).

Across 2020–2025, Good-day share shifted -6.3 points and median AQI moved +3 (worsening). No Unhealthy-tier days appear in this annual dataset. Metros with comparable AQI profiles include Appleton, WI (72.3% good, AQI 38); Billings, MT (86.3% good, AQI 38); Burlington-South Burlington, VT (87.7% good, AQI 38).

Best and worst city air quality →

Air Quality Summary

Median AQI

38

Good

Good Days

90.4%

329 of 364 days

Max AQI

91

Moderate

Health Grade

Excellent

90th pct: 50

AQI Day Breakdown (2025)

Distribution of 364 monitored days across EPA AQI categories.

Good

329

90%

Moderate

35

10%

USG

0

0%

Unhealthy

0

0%

Very Unhealthy

0

0%

Hazardous

0

0%

Health Impact Assessment

Excellent

The Harrison, AR metro area's air quality is rated Excellent based on 90.4% 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 Harrison, AR metro compare?

How Harrison, AR compares

Good-day share better than typical
Harrison, AR 90.4%
Appleton, WI 72.3%
Typical US metro 70.6%
Median AQI better than typical
Harrison, AR 38
Appleton, WI 38
Typical US metro 41
Unhealthy days / yr better than typical
Harrison, AR 0
Appleton, WI 6
Typical US metro 1

5-Year Air Quality Trend

Air quality is worsening in the Harrison, AR metro. Highest Good-day share: 2020 (96.7%, 352 of 364 monitored days).

Year Good Moderate Unhealthy Median AQI
2020 352 12 0 35
2021 340 25 0 37
2022 337 27 0 37
2023 311 53 0 39
2024 334 32 0 39
2025 329 35 0 38

Metros with a similar median AQI

CBSA peers nationwide whose annual median AQI sits near Harrison, AR (38).

Appleton, WI

Median AQI 38 · 72.3% Good-day share

38

Billings, MT

Median AQI 38 · 86.3% Good-day share

38

Burlington-South Burlington, VT

Median AQI 38 · 87.7% Good-day share

38

Charlottesville, VA

Median AQI 38 · 81.0% Good-day share

38

Corning, NY

Median AQI 38 · 83.3% Good-day share

38

Dickinson, ND

Median AQI 38 · 82.7% Good-day share

38

Metros with similar unhealthy-day exposure

A second relationship type: metros whose unhealthy-or-worse day count is closest to Harrison, AR'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 Harrison, AR have? ▼
In 2025, the Harrison, AR metro area recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 91.
What is the air quality in the Harrison, AR metro area? ▼
The Harrison, AR metro area has a median Air Quality Index (AQI) of 38, rated "Good." 90.4% of monitored days (329 out of 364) had good air quality in 2025.
Is air quality in Harrison, AR getting better or worse? ▼
Air quality in the Harrison, AR metro is worsening 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 96.7% (352 of 364 days). Lowest qualifying Good-day share: 2023 at 85.4% (311 of 364 days).
What does AQI 38 mean for health? ▼
An AQI of 38 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 Harrison, AR compare to other metro areas? ▼
The Harrison, AR metro has 90.4% good air days. Similar metros: Appleton, WI (72.3% good), Billings, MT (86.3% good), Burlington-South Burlington, VT (87.7% good).
What is the 90th percentile AQI for Harrison, AR? ▼
The 90th percentile AQI for the Harrison, AR metro area is 50, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 91 (Moderate).

Data Sources

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