Metro area air quality · 2025

Mobile, AL

Median AQI 43 (Good). 71.6% of monitored days rated Good across this metro's EPA monitoring network.

Compiled by PlainAirData · August 23, 2026

43
Median AQI: 71.6%
Good-air days: 0
Unhealthy days: 48%
Cleaner than US metros

Mobile, AL posted a 2025 median AQI of 43 (Good) with 71.6% Good days

According to the U.S. EPA Air Quality System, the Mobile, AL CBSA recorded a median AQI of 43 across 363 monitored days in 2025, with 71.6% 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 Mobile, AL CBSA's 71.6% Good-day share places it cleaner than 48% of US metros in 2025.
Closest median-AQI peer: Ashtabula, OH (81.2% Good, median AQI 43) is the closest nationwide median-AQI peer to Mobile, AL.
2020–2025 Good-day shift: Mobile, AL's Good-day share moved +17.6 points from 2020 to 2025 (median AQI -6).
Median AQI: Median AQI: 43

Aggregated from EPA Air Quality System (2025), 363 monitored days. EPA AQS →

The verdict

Mobile, AL's peak reading 80 stays in the lower max-AQI tercile on this extract. On the EPA scale the metro runs good, more polluted than the median US metro, with a median AQI of 43 and 71.6% of 363 monitored days in the Good band.

43
median AQI · Good: 71.6%
days rated Good: 48%
cleaner than US metros: 80
worst single reading

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

Mobile, AL metro's Good-day share rose from 66.3% to 71.6% between the 2024 and 2025 EPA annual releases, a change of +5.3 percentage points.

Mobile, AL's peak reading 80 stays in the lower max-AQI tercile on this extract. Signature read: peak AQI 80 (low tercile vs CBSA corpus). Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 43 over 363 measured days in 2025 (Good / Moderate). The monitored-day split lands at 260 Good (72%), 103 Moderate (28%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 55; the highest single-day reading hit 80 (Moderate).

Across 2020–2025, Good-day share shifted +17.6 points and median AQI moved -6 (improving). No Unhealthy-tier days appear in this annual dataset. Metros with comparable AQI profiles include Ashtabula, OH (81.2% good, AQI 43); Bloomington, IN (67.7% good, AQI 43); Champaign-Urbana, IL (65.8% good, AQI 43).

Understanding AQI →

Air Quality Summary

Median AQI

Good

Good Days

71.6%

260 of 363 days

Max AQI

Moderate

Health Grade

Moderate

90th pct: 55

AQI Day Breakdown (2025)

Distribution of 363 monitored days across EPA AQI categories.

Good

260

72%

Moderate

103

28%

USG

Unhealthy

Very Unhealthy

Hazardous

Health Impact Assessment

Moderate

The Mobile, AL metro area's air quality is rated Moderate based on 71.6% 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 Mobile, AL metro compare?

How Mobile, AL compares

Compare against

Good-day share better than typical

Mobile, AL 71.6%

Ashtabula, OH 81.2%

Typical US metro 70.6%

Median AQI worse than typical

Mobile, AL 43

Ashtabula, OH 43

Typical US metro 41

Unhealthy days / yr better than typical

Mobile, AL 0

Ashtabula, OH 0

Typical US metro 1

5-Year Air Quality Trend

Air quality is improving in the Mobile, AL metro. Highest Good-day share: 2025 (71.6%, 260 of 363 monitored days).

Year	Good	Moderate	Median AQI	Max AQI
2020	188	160	49	78
2021	125	236	53	83
2022	235	128	44	93
2023	203	157	46	108
2024	242	123	45	80
2025	260	103	43	80

Metros with a similar median AQI

CBSA peers nationwide whose annual median AQI sits near Mobile, AL (43).

Ashtabula, OH

Median AQI 43 · 81.2% Good-day share

Bloomington, IN

Median AQI 43 · 67.7% Good-day share

Champaign-Urbana, IL

Median AQI 43 · 65.8% Good-day share

Cleveland, MS

Median AQI 43 · 71.9% Good-day share

Columbus, IN

Median AQI 43 · 72.6% Good-day share

Durham-Chapel Hill, NC

Median AQI 43 · 71.5% Good-day share

Metros with similar unhealthy-day exposure

A second relationship type: metros whose unhealthy-or-worse day count is closest to Mobile, AL'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

Frequently Asked Questions

What is the 90th percentile AQI for Mobile, AL? ▼

The 90th percentile AQI for the Mobile, AL metro area is 55, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 80 (Moderate).

How many unhealthy air days does Mobile, AL have? ▼

In 2025, the Mobile, AL metro area recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 80.

What is the air quality in the Mobile, AL metro area? ▼

The Mobile, AL metro area has a median Air Quality Index (AQI) of 43, rated "Good." 71.6% of monitored days (260 out of 363) had good air quality in 2025.

Is air quality in Mobile, AL getting better or worse? ▼

Air quality in the Mobile, AL metro 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: 2025 at 71.6% (260 of 363 days). Lowest qualifying Good-day share: 2021 at 34.6% (125 of 361 days).

What does AQI 43 mean for health? ▼

An AQI of 43 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 Mobile, AL compare to other metro areas? ▼

The Mobile, AL metro has 71.6% good air days. Similar metros: Ashtabula, OH (81.2% good), Bloomington, IN (67.7% good), Champaign-Urbana, IL (65.8% good).

Data Sources

Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset for Mobile, AL, 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, Mobile, AL · 2020–2025 Accessed 2026-07-06