Metro area air quality · 2025
Parkersburg-Vienna, WV
Median AQI 39 (Good). 82.9% of monitored days rated Good across this metro's EPA monitoring network.
- 39
- Median AQI
- 82.9%
- Good-air days
- 0
- Unhealthy days
- 73%
- Cleaner than US metros
Parkersburg-Vienna, WV posted a 2025 median AQI of 39 (Good) with 82.9% Good days
According to the U.S. EPA Air Quality System, the Parkersburg-Vienna, WV CBSA recorded a median AQI of 39 across 281 monitored days in 2025, with 82.9% 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 Parkersburg-Vienna, WV CBSA's 82.9% Good-day share places it cleaner than 73% of US metros in 2025.
- Closest median-AQI peer
- Bay City, MI (70.4% Good, median AQI 39) is the closest nationwide median-AQI peer to Parkersburg-Vienna, WV.
- 2020–2025 Good-day shift
- Parkersburg-Vienna, WV's Good-day share moved -5.4 points from 2020 to 2025 (median AQI +2).
- Median AQI
- Median AQI: 39
Aggregated from EPA Air Quality System (2025), 281 monitored days. EPA AQS →
The verdict
Parkersburg-Vienna, WV sits in the upper Good-day tercile among EPA CBSA metros on this site (82.9% of 281 monitored days). On the EPA scale the metro runs good, cleaner than the median US metro, with a median AQI of 39 and 82.9% of 281 monitored days in the Good band.
- 39
- median AQI · Good
- 82.9%
- days rated Good
- 73%
- cleaner than US metros
- 84
- 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
- Parkersburg-Vienna, WV metro's Good-day share rose from 78.5% to 82.9% between the 2024 and 2025 EPA annual releases, a change of +4.4 percentage points.
- Parkersburg-Vienna, WV metro's peak single-day AQI fell from 101 to 84 between the 2024 and 2025 EPA annual releases, a change of -17 points.
- Parkersburg-Vienna, WV metro's median AQI fell from 43 to 39 between the 2024 and 2025 EPA annual releases, a change of -4 points.
Parkersburg-Vienna, WV sits in the upper Good-day tercile among EPA CBSA metros on this site (82.9% of 281 monitored days). Signature read: 82.9% 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 39 over 281 measured days in 2025 (Good / Good). The monitored-day split lands at 233 Good (83%), 48 Moderate (17%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 54; the highest single-day reading hit 84 (Moderate).
Across 2020–2025, Good-day share shifted -5.4 points and median AQI moved +2 (worsening). No Unhealthy-tier days appear in this annual dataset. Metros with comparable AQI profiles include Bay City, MI (70.4% good, AQI 39); Brainerd, MN (74.3% good, AQI 39); Cambridge, MD (86.0% good, AQI 39).
Air Quality Summary
Median AQI
39
Good
Good Days
82.9%
233 of 281 days
Max AQI
84
Moderate
Health Grade
Good
90th pct: 54
AQI Day Breakdown (2025)
Distribution of 281 monitored days across EPA AQI categories.
Good
233
83%
Moderate
48
17%
USG
0
0%
Unhealthy
0
0%
Very Unhealthy
0
0%
Hazardous
0
0%
Health Impact Assessment
The Parkersburg-Vienna, WV metro area's air quality is rated Good based on 82.9% 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 Parkersburg-Vienna, WV metro compare?
How Parkersburg-Vienna, WV compares
5-Year Air Quality Trend
Air quality is worsening in the Parkersburg-Vienna, WV metro. Highest Good-day share: 2020 (88.3%, 250 of 283 monitored days).
| Year | Good | Moderate | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|
| 2020 | 250 | 33 | 0 | 37 | 80 |
| 2021 | 221 | 50 | 0 | 38 | 76 |
| 2022 | 242 | 38 | 0 | 39 | 108 |
| 2023 | 213 | 53 | 1 | 41 | 166 |
| 2024 | 219 | 60 | 0 | 43 | 101 |
| 2025 | 233 | 48 | 0 | 39 | 84 |
Metros with a similar median AQI
CBSA peers nationwide whose annual median AQI sits near Parkersburg-Vienna, WV (39).
Bay City, MI
Median AQI 39 · 70.4% Good-day share
Brainerd, MN
Median AQI 39 · 74.3% Good-day share
Cambridge, MD
Median AQI 39 · 86.0% Good-day share
Charleston, WV
Median AQI 39 · 77.0% Good-day share
Dalton, GA
Median AQI 39 · 90.3% Good-day share
Harrisonburg, VA
Median AQI 39 · 80.0% Good-day share
Metros with similar unhealthy-day exposure
A second relationship type: metros whose unhealthy-or-worse day count is closest to Parkersburg-Vienna, WV'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 Parkersburg-Vienna, WV have? ▼
What is the air quality in the Parkersburg-Vienna, WV metro area? ▼
Is air quality in Parkersburg-Vienna, WV getting better or worse? ▼
What does AQI 39 mean for health? ▼
How does Parkersburg-Vienna, WV compare to other metro areas? ▼
What is the 90th percentile AQI for Parkersburg-Vienna, WV? ▼
Data Sources
Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset for Parkersburg-Vienna, WV, 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, Parkersburg-Vienna, WV · 2020–2025