Metro area air quality · 2025

Alexandria, LA

Median AQI 37 (Good). 73.7% of monitored days rated Good across this metro's EPA monitoring network.

37
Median AQI
73.7%
Good-air days
0
Unhealthy days
53%
Cleaner than US metros

Alexandria, LA posted a 2025 median AQI of 37 (Good) with 73.7% Good days

According to the U.S. EPA Air Quality System, the Alexandria, LA CBSA recorded a median AQI of 37 across 118 monitored days in 2025, with 73.7% 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 Alexandria, LA CBSA's 73.7% Good-day share places it cleaner than 53% of US metros in 2025.
Closest median-AQI peer
Athens, TN (78.2% Good, median AQI 37) is the closest nationwide median-AQI peer to Alexandria, LA.
2020–2025 Good-day shift
Alexandria, LA's Good-day share moved -5.4 points from 2020 to 2025 (median AQI +3).
Median AQI
Median AQI: 37

Aggregated from EPA Air Quality System (2025), 118 monitored days. EPA AQS →

The verdict

The Alexandria, LA metro runs good on the EPA scale, cleaner than the median US metro, a median AQI of 37 with 73.7% of 118 monitored days in the Good band.

37
median AQI · Good
73.7%
days rated Good
53%
cleaner than US metros
67
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
  • Alexandria, LA metro's peak single-day AQI fell from 102 to 67 between the 2024 and 2025 EPA annual releases, a change of -35 points.
  • Alexandria, LA metro's Good-day share rose from 70.8% to 73.7% between the 2024 and 2025 EPA annual releases, a change of +2.9 percentage points.

Compared against 120 monitored days in 2024 and 118 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

Insights: Alexandria, LA metro. Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 37 over 118 measured days in 2025, which corresponds to a Good band and a Moderate metro-wide health grade. The monitored-day split lands at 87 Good days (74%), 31 Moderate (26%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 57 while the highest single-day reading hit 67 (Moderate). Metro residents averaged roughly 22.1 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 -5.4 points and the median AQI moved +3 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, TN (78.2% good, AQI 37); Bennington, VT (83.6% good, AQI 37); Blacksburg-Christiansburg-Radford, VA (94.4% good, AQI 37).

Air Quality Summary

Median AQI

37

Good

Good Days

73.7%

87 of 118 days

Max AQI

67

Moderate

Health Grade

Moderate

90th pct: 57

AQI Day Breakdown (2025)

Distribution of 118 monitored days across EPA AQI categories.

Good

87

74%

Moderate

31

26%

USG

0

0%

Unhealthy

0

0%

Very Unhealthy

0

0%

Hazardous

0

0%

Health Impact Assessment

Moderate

The Alexandria, LA metro area's air quality is rated Moderate based on 73.7% 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 Alexandria, LA metro compare?

How Alexandria, LA compares

Good-day share better than typical
Alexandria, LA 73.7%
Athens, TN 78.2%
Typical US metro 70.6%
Median AQI better than typical
Alexandria, LA 37
Athens, TN 37
Typical US metro 41
Unhealthy days / yr better than typical
Alexandria, LA 0
Athens, TN 0
Typical US metro 1

5-Year Air Quality Trend

Air quality is worsening in the Alexandria, LA metro. Highest Good-day share: 2020 (79.2%, 95 of 120 monitored days).

Year Good Moderate Unhealthy Median AQI
2020 95 25 0 34
2021 96 26 0 38
2022 85 33 0 38
2023 74 45 0 43
2024 85 35 0 39
2025 87 31 0 37

Metros with a similar median AQI

CBSA peers nationwide whose annual median AQI sits near Alexandria, LA (37).

Athens, TN

Median AQI 37 · 78.2% Good-day share

37

Bennington, VT

Median AQI 37 · 83.6% Good-day share

37

Blacksburg-Christiansburg-Radford, VA

Median AQI 37 · 94.4% Good-day share

37

Cadillac, MI

Median AQI 37 · 86.0% Good-day share

37

Chambersburg-Waynesboro, PA

Median AQI 37 · 91.5% Good-day share

37

Columbia, MO

Median AQI 37 · 93.2% Good-day share

37

Metros with similar unhealthy-day exposure

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

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 Alexandria, LA metro area? ▼
The Alexandria, LA metro area has a median Air Quality Index (AQI) of 37, rated "Good." 73.7% of monitored days (87 out of 118) had good air quality in 2025.
How many unhealthy air days does Alexandria, LA have? ▼
In 2025, the Alexandria, LA metro area recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 67.
Is air quality in Alexandria, LA getting better or worse? ▼
Air quality in the Alexandria, LA 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 79.2% (95 of 120 days). Lowest qualifying Good-day share: 2023 at 62.2% (74 of 119 days).
What does AQI 37 mean for health? ▼
An AQI of 37 is "Good", air quality is satisfactory and poses little or no health risk. This is the best category on the EPA's AQI scale.
What is the 90th percentile AQI for Alexandria, LA? ▼
The 90th percentile AQI for the Alexandria, LA metro area is 57, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 67 (Moderate).
How does Alexandria, LA compare to other metro areas? ▼
The Alexandria, LA metro has 73.7% good air days. Similar metros: Athens, TN (78.2% good), Bennington, VT (83.6% good), Blacksburg-Christiansburg-Radford, VA (94.4% good).

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.