Metro area air quality · 2025

Manitowoc, WI

Median AQI 36 (Good). 87.4% of monitored days rated Good across this metro's EPA monitoring network.

36
Median AQI
87.4%
Good-air days
0
Unhealthy days
82%
Cleaner than US metros

Manitowoc, WI posted a 2025 median AQI of 36 (Good) with 87.4% Good days

According to the U.S. EPA Air Quality System, the Manitowoc, WI CBSA recorded a median AQI of 36 across 199 monitored days in 2025, with 87.4% 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 Manitowoc, WI CBSA's 87.4% Good-day share places it cleaner than 82% 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 Manitowoc, WI.
2020–2025 Good-day shift
Manitowoc, WI's Good-day share moved -2.0 points from 2020 to 2025 (median AQI +0).
Median AQI
Median AQI: 36

Aggregated from EPA Air Quality System (2025), 199 monitored days. EPA AQS →

The verdict

Manitowoc, WI sits in the upper Good-day tercile among EPA CBSA metros on this site (87.4% of 199 monitored days). On the EPA scale the metro runs good, cleaner than most US metros, with a median AQI of 36 and 87.4% of 199 monitored days in the Good band.

36
median AQI · Good
87.4%
days rated Good
82%
cleaner than US metros
115
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
  • Manitowoc, WI metro's peak single-day AQI fell from 129 to 115 between the 2024 and 2025 EPA annual releases, a change of -14 points.
  • Manitowoc, WI metro's Good-day share rose from 86.9% to 87.9% between the 2024 and 2025 EPA annual releases, a change of +1.0 percentage points.
  • Manitowoc, WI metro's median AQI fell from 39 to 36 between the 2024 and 2025 EPA annual releases, a change of -3 points.

Compared against 198 monitored days in 2024 and 198 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

Manitowoc, WI sits in the upper Good-day tercile among EPA CBSA metros on this site (87.4% of 199 monitored days). Signature read: 87.4% 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 36 over 199 measured days in 2025 (Good / Good). The monitored-day split lands at 174 Good (87%), 24 Moderate (12%), and 1 Unhealthy-for-Sensitive-Groups (1%). The 90th-percentile AQI finished at 58; the highest single-day reading hit 115 (USG).

Across 2020–2025, Good-day share shifted -2.0 points and median AQI moved +0 (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

36

Good

Good Days

87.4%

174 of 199 days

Max AQI

115

USG

Health Grade

Good

90th pct: 58

AQI Day Breakdown (2025)

Distribution of 199 monitored days across EPA AQI categories.

Good

174

87%

Moderate

24

12%

USG

1

1%

Unhealthy

0

0%

Very Unhealthy

0

0%

Hazardous

0

0%

Health Impact Assessment

Good

The Manitowoc, WI metro area's air quality is rated Good based on 87.4% 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 Manitowoc, WI metro compare?

How Manitowoc, WI compares

Good-day share better than typical
Manitowoc, WI 87.4%
Atlantic City-Hammonton, NJ 82.2%
Typical US metro 70.6%
Median AQI better than typical
Manitowoc, WI 36
Atlantic City-Hammonton, NJ 36
Typical US metro 41
Unhealthy days / yr better than typical
Manitowoc, WI 0
Atlantic City-Hammonton, NJ 0
Typical US metro 1

5-Year Air Quality Trend

Air quality is stable in the Manitowoc, WI metro. Highest Good-day share: 2020 (89.9%, 169 of 188 monitored days).

Year Good Moderate Unhealthy Median AQI
2020 169 19 0 36
2021 174 30 0 39
2022 167 25 2 38
2023 162 40 1 40
2024 172 26 0 39
2025 174 24 0 36

Metros with a similar median AQI

CBSA peers nationwide whose annual median AQI sits near Manitowoc, WI (36).

Atlantic City-Hammonton, NJ

Median AQI 36 · 82.2% Good-day share

36

Barnstable Town, MA

Median AQI 36 · 93.7% Good-day share

36

Bemidji, MN

Median AQI 36 · 79.1% Good-day share

36

Claremont-Lebanon, NH-VT

Median AQI 36 · 83.6% Good-day share

36

Crestview-Fort Walton Beach-Destin, FL

Median AQI 36 · 93.9% Good-day share

36

East Stroudsburg, PA

Median AQI 36 · 88.3% Good-day share

36

Metros with similar unhealthy-day exposure

A second relationship type: metros whose unhealthy-or-worse day count is closest to Manitowoc, WI'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 Manitowoc, WI have? ▼
In 2025, the Manitowoc, WI metro area recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 115.
What is the air quality in the Manitowoc, WI metro area? ▼
The Manitowoc, WI metro area has a median Air Quality Index (AQI) of 36, rated "Good." 87.4% of monitored days (174 out of 199) had good air quality in 2025.
Is air quality in Manitowoc, WI getting better or worse? ▼
Air quality in the Manitowoc, WI 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 89.9% (169 of 188 days). Lowest qualifying Good-day share: 2023 at 79.8% (162 of 203 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 Manitowoc, WI compare to other metro areas? ▼
The Manitowoc, WI metro has 87.4% 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 Manitowoc, WI? ▼
The 90th percentile AQI for the Manitowoc, WI metro area is 58, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 115 (USG).

Data Sources

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