Metro area air quality · 2025

Ludington, MI

Median AQI 36 (Good). 89.2% of monitored days rated Good across this metro's EPA monitoring network.

Compiled by PlainAirData · August 23, 2026

36
Median AQI: 89.2%
Good-air days: 0
Unhealthy days: 85%
Cleaner than US metros

Ludington, MI posted a 2025 median AQI of 36 (Good) with 89.2% Good days

According to the U.S. EPA Air Quality System, the Ludington, MI CBSA recorded a median AQI of 36 across 213 monitored days in 2025, with 89.2% 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 Ludington, MI CBSA's 89.2% Good-day share places it cleaner than 85% of US metros in 2025.
Closest median-AQI peer: Atlantic City-Hammonton, NJ (82.2% Good, median AQI 36) is the closest nationwide median-AQI peer to Ludington, MI.
2020–2025 Good-day shift: Ludington, MI's Good-day share moved -2.4 points from 2020 to 2025 (median AQI -1).
Median AQI: Median AQI: 36

Aggregated from EPA Air Quality System (2025), 213 monitored days. EPA AQS →

The verdict

Ludington, MI sits in the upper Good-day tercile among EPA CBSA metros on this site (89.2% of 213 monitored days). On the EPA scale the metro runs good, cleaner than most US metros, with a median AQI of 36 and 89.2% of 213 monitored days in the Good band.

36
median AQI · Good: 89.2%
days rated Good: 85%
cleaner than US metros: 87
worst single reading

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

Ludington, MI metro's peak single-day AQI fell from 97 to 87 between the 2024 and 2025 EPA annual releases, a change of -10 points.

Ludington, MI sits in the upper Good-day tercile among EPA CBSA metros on this site (89.2% of 213 monitored days). Signature read: 89.2% 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 36 over 213 measured days in 2025 (Good / Good). The monitored-day split lands at 190 Good (89%), 23 Moderate (11%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 51; the highest single-day reading hit 87 (Moderate).

Across 2020–2025, Good-day share shifted -2.4 points and median AQI moved -1 (stable). No Unhealthy-tier days appear in this annual dataset. Metros with comparable AQI profiles include Atlantic City-Hammonton, NJ (82.2% good, AQI 36); Barnstable Town, MA (93.7% good, AQI 36); Bemidji, MN (79.1% good, AQI 36).

Best and worst city air quality →

Air Quality Summary

Median AQI

Good

Good Days

89.2%

190 of 213 days

Max AQI

Moderate

Health Grade

Good

90th pct: 51

AQI Day Breakdown (2025)

Distribution of 213 monitored days across EPA AQI categories.

Good

190

89%

Moderate

11%

USG

Unhealthy

Very Unhealthy

Hazardous

Health Impact Assessment

Good

The Ludington, MI metro area's air quality is rated Good based on 89.2% 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 Ludington, MI metro compare?

How Ludington, MI compares

Compare against

Good-day share better than typical

Ludington, MI 89.2%

Atlantic City-Hammonton, NJ 82.2%

Typical US metro 70.6%

Median AQI better than typical

Ludington, MI 36

Atlantic City-Hammonton, NJ 36

Typical US metro 41

Unhealthy days / yr better than typical

Ludington, MI 0

Atlantic City-Hammonton, NJ 0

Typical US metro 1

5-Year Air Quality Trend

Air quality is stable in the Ludington, MI metro. Highest Good-day share: 2022 (93.2%, 219 of 235 monitored days).

Year	Good	Moderate	Unhealthy	Median AQI	Max AQI
2020	229	20	1	37	159
2021	206	34	0	38	115
2022	219	15	1	36	161
2023	178	41	0	40	143
2024	218	26	0	37	97
2025	190	23	0	36	87

Metros with a similar median AQI

CBSA peers nationwide whose annual median AQI sits near Ludington, MI (36).

Atlantic City-Hammonton, NJ

Median AQI 36 · 82.2% Good-day share

Barnstable Town, MA

Median AQI 36 · 93.7% Good-day share

Bemidji, MN

Median AQI 36 · 79.1% Good-day share

Claremont-Lebanon, NH-VT

Median AQI 36 · 83.6% Good-day share

Crestview-Fort Walton Beach-Destin, FL

Median AQI 36 · 93.9% Good-day share

East Stroudsburg, PA

Median AQI 36 · 88.3% Good-day share

Metros with similar unhealthy-day exposure

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

How many unhealthy air days does Ludington, MI have? ▼

In 2025, the Ludington, MI metro area recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 87.

What is the air quality in the Ludington, MI metro area? ▼

The Ludington, MI metro area has a median Air Quality Index (AQI) of 36, rated "Good." 89.2% of monitored days (190 out of 213) had good air quality in 2025.

Is air quality in Ludington, MI getting better or worse? ▼

Air quality in the Ludington, MI 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: 2022 at 93.2% (219 of 235 days). Lowest qualifying Good-day share: 2023 at 81.3% (178 of 219 days).

What does AQI 36 mean for health? ▼

An AQI of 36 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 Ludington, MI compare to other metro areas? ▼

The Ludington, MI metro has 89.2% good air days. Similar metros: Atlantic City-Hammonton, NJ (82.2% good), Barnstable Town, MA (93.7% good), Bemidji, MN (79.1% good).

What is the 90th percentile AQI for Ludington, MI? ▼

The 90th percentile AQI for the Ludington, MI metro area is 51, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 87 (Moderate).

Data Sources

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