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.

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

Vineyard Haven, MA sits in the upper Good-day tercile among EPA CBSA metros on this site (95.9% of 341 monitored days). On the EPA scale the metro runs good, among the cleanest 10% of US metros, with a median AQI of 35 and 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.

Annual release change

What changed in the 2025 EPA annual release

2024 → 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.

Compared against 356 monitored days in 2024 and 340 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

Vineyard Haven, MA sits in the upper Good-day tercile among EPA CBSA metros on this site (95.9% of 341 monitored days). Signature read: 95.9% 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 35 over 341 measured days in 2025 (Good / Excellent). The monitored-day split lands at 327 Good (96%), 12 Moderate (4%), and 1 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 45; the highest single-day reading hit 151 (Unhealthy).

Across 2020–2025, Good-day share shifted -0.7 points and median AQI moved -2 (stable). The annual record contains 1 day at Unhealthy or worse. 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).

Health effects of air pollution →

Air Quality Summary

Median AQI

35

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

12

4%

USG

1

0%

Unhealthy

1

0%

Very Unhealthy

0

0%

Hazardous

0

0%

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

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
2020 345 11 0 37
2021 329 27 0 36
2022 338 20 0 37
2023 332 25 0 38
2024 331 25 0 37
2025 327 12 1 35

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

35

Effingham, IL

Median AQI 35 · 95.5% Good-day share

35

Ithaca, NY

Median AQI 35 · 93.2% Good-day share

35

Kinston, NC

Median AQI 35 · 97.5% Good-day share

35

Meridian, MS

Median AQI 35 · 94.6% Good-day share

35

Morehead City, NC

Median AQI 35 · 96.2% Good-day share

35

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

41

Bangor, ME

1 unhealthy-or-worse days · median AQI 33

33

Bartlesville, OK

1 unhealthy-or-worse days · median AQI 44

44

Beaumont-Port Arthur, TX

1 unhealthy-or-worse days · median AQI 52

52

Beaver Dam, WI

1 unhealthy-or-worse days · median AQI 40

40

Bellingham, WA

1 unhealthy-or-worse days · median AQI 31

31

Frequently Asked Questions

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.
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.
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.
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).
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).

Data Sources

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