Metro area air quality · 2025

Vineyard Haven, MA

Median AQI 35 (Good). 95.9% of monitored days rated Good across this metro's EPA monitoring network.

Compiled by PlainAirData · August 23, 2026

35
Median AQI: 95.9%
Good-air days: 1
Unhealthy days: 96%
Cleaner than US metros

Vineyard Haven, MA posted a 2025 median AQI of 35 (Good) with 95.9% Good days

According to the U.S. EPA Air Quality System, the Vineyard Haven, MA CBSA recorded a median AQI of 35 across 341 monitored days in 2025, with 95.9% rated Good and 1 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 Vineyard Haven, MA CBSA's 95.9% Good-day share places it cleaner than 96% of US metros in 2025.
Closest median-AQI peer: Baraboo, WI (75.6% Good, median AQI 35) is the closest nationwide median-AQI peer to Vineyard Haven, MA.
2020–2025 Good-day shift: Vineyard Haven, MA's Good-day share moved -0.7 points from 2020 to 2025 (median AQI -2).
Median AQI: Median AQI: 35

Aggregated from EPA Air Quality System (2025), 341 monitored days. EPA AQS →

The verdict

The Vineyard Haven, MA metro runs good on the EPA scale, among the cleanest 10% of US metros, a median AQI of 35 with 95.9% of 341 monitored days in the Good band.

35
median AQI · Good: 95.9%
days rated Good: 96%
cleaner than US metros: 151
worst single reading

1 day reached Unhealthy or worse across the metro's monitors in 2025.

Vineyard Haven, MA metro's peak single-day AQI rose from 108 to 151 between the 2024 and 2025 EPA annual releases, a change of +43 points.
Vineyard Haven, MA metro's Good-day share rose from 93.0% to 96.2% between the 2024 and 2025 EPA annual releases, a change of +3.2 percentage points.
Vineyard Haven, MA metro's Unhealthy-category days rose from 0 to 1 between the 2024 and 2025 EPA annual releases, a change of +1 days.

Insights: Vineyard Haven, MA metro. Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 35 over 341 measured days in 2025, which corresponds to a Good band and a Excellent metro-wide health grade. The monitored-day split lands at 327 Good days (96%), 12 Moderate (4%), and 1 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 45 while the highest single-day reading hit 151 (Unhealthy). Metro residents averaged roughly 28.8 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 -0.7 points and the median AQI moved -2 points, which classifies the multi-year trajectory as stable. The annual record contains 1 day at Unhealthy or worse. On that day, the EPA recommends that sensitive groups limit prolonged outdoor exertion. Metros with comparable AQI profiles include Baraboo, WI (75.6% good, AQI 35); Effingham, IL (95.5% good, AQI 35); Ithaca, NY (93.2% good, AQI 35).

Air Quality Summary

Median AQI

Good

Good Days

95.9%

327 of 341 days

Max AQI

151

Unhealthy

Health Grade

Excellent

90th pct: 45

AQI Day Breakdown (2025)

Distribution of 341 monitored days across EPA AQI categories.

Good

327

96%

Moderate

USG

Unhealthy

Very Unhealthy

Hazardous

Health Impact Assessment

Excellent

The Vineyard Haven, MA metro area's air quality is rated Excellent based on 95.9% good air days. There were 1 unhealthy days in 2025 when outdoor activity should be limited.

Air quality is acceptable most days, but 1 days reached "Unhealthy for Sensitive Groups" and peak AQI reached 151. Sensitive groups should monitor real-time conditions at AirNow.gov.

How does the Vineyard Haven, MA metro compare?

How Vineyard Haven, MA compares

Compare against

Good-day share better than typical

Vineyard Haven, MA 95.9%

Baraboo, WI 75.6%

Typical US metro 70.6%

Median AQI better than typical

Vineyard Haven, MA 35

Baraboo, WI 35

Typical US metro 41

Unhealthy days / yr about typical

Vineyard Haven, MA 1

Baraboo, WI 1

Typical US metro 1

5-Year Air Quality Trend

Air quality is stable in the Vineyard Haven, MA metro. Highest Good-day share: 2020 (96.9%, 345 of 356 monitored days).

Year	Good	Moderate	Unhealthy	Median AQI	Max AQI
2020	345	11	0	37	126
2021	329	27	0	36	100
2022	338	20	0	37	126
2023	332	25	0	38	133
2024	331	25	0	37	108
2025	327	12	1	35	151

Metros with a similar median AQI

CBSA peers nationwide whose annual median AQI sits near Vineyard Haven, MA (35).

Baraboo, WI

Median AQI 35 · 75.6% Good-day share

Effingham, IL

Median AQI 35 · 95.5% Good-day share

Ithaca, NY

Median AQI 35 · 93.2% Good-day share

Kinston, NC

Median AQI 35 · 97.5% Good-day share

Meridian, MS

Median AQI 35 · 94.6% Good-day share

Morehead City, NC

Median AQI 35 · 96.2% Good-day share

Metros with similar unhealthy-day exposure

A second relationship type: metros whose unhealthy-or-worse day count is closest to Vineyard Haven, MA's 1 (independent of median AQI).

Ann Arbor, MI

1 unhealthy-or-worse days · median AQI 41

Bangor, ME

1 unhealthy-or-worse days · median AQI 33

Bartlesville, OK

1 unhealthy-or-worse days · median AQI 44

Beaumont-Port Arthur, TX

1 unhealthy-or-worse days · median AQI 52

Beaver Dam, WI

1 unhealthy-or-worse days · median AQI 40

Bellingham, WA

1 unhealthy-or-worse days · median AQI 31

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 Vineyard Haven, MA metro area? ▼

The Vineyard Haven, MA metro area has a median Air Quality Index (AQI) of 35, rated "Good." 95.9% of monitored days (327 out of 341) had good air quality in 2025.

How many unhealthy air days does Vineyard Haven, MA have? ▼

In 2025, the Vineyard Haven, MA metro area recorded 1 unhealthy air days (1 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 151.

Is air quality in Vineyard Haven, MA getting better or worse? ▼

Air quality in the Vineyard Haven, MA 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 96.9% (345 of 356 days). Lowest qualifying Good-day share: 2021 at 92.4% (329 of 356 days).

What does AQI 35 mean for health? ▼

An AQI of 35 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 Vineyard Haven, MA? ▼

The 90th percentile AQI for the Vineyard Haven, MA metro area is 45, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 151 (Unhealthy).

How does Vineyard Haven, MA compare to other metro areas? ▼

The Vineyard Haven, MA metro has 95.9% good air days. Similar metros: Baraboo, WI (75.6% good), Effingham, IL (95.5% good), Ithaca, NY (93.2% 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 Accessed 2026-07-06

Send the source-year summary or download its ready-to-use data card.

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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.