Pennsylvania · County air quality · 2025
Wyoming County, Pennsylvania
Median AQI 24 (Good). 86.5% of monitored days rated Good, direct from EPA Air Quality System stations.
- 24
- Median AQI
- 86.5%
- Good-air days
- 0
- Unhealthy days
- 73%
- Cleaner than US counties
Wyoming County's 2025 annual median AQI is 24 (Good), with 86.5% Good days
According to the U.S. EPA Air Quality System, Wyoming County, Pennsylvania posted a 2025 median AQI of 24 (Good) across 356 monitored days, with 86.5% rated Good and 0 unhealthy or worse. This is an annual comparison, not today's advisory.
Data source EPA Air Quality System (AQS)
- Cleaner than US
- Wyoming County's 86.5% Good-day share places it cleaner than 73% of US counties in 2025.
- Closest median-AQI peer
- Lubbock County (92.9% Good, median AQI 24) is the closest nationwide median-AQI peer to Wyoming County.
- 2020–2025 trend
- Wyoming County's floor-qualifying Good-day share is improving from 2020 to 2025 (83.1% → 86.5%).
- Median AQI
- Median AQI: 24
According to the 2025 EPA AQS county release on PlainAirData, Wyoming County, Pennsylvania ranks #59 of 951 by median AQI (24) and #255 by good-day share (86.5%). Ponce County, Puerto Rico is #1 of 951 by median AQI (3, 91.4% Good days) at good-day-share #159 ≠ largest of 7 at 100.0% Good days #1 by good-day share (100.0%, median AQI 9) at median-AQI #7.
Annual release change
What changed in the 2025 EPA annual release
- Wyoming County's peak single-day AQI rose from 68 to 116 between the 2024 and 2025 EPA annual releases, a change of +48 points.
- Wyoming County's Good-day share fell from 90.6% to 86.5% between the 2024 and 2025 EPA annual releases, a change of -4.1 percentage points.
Data updated August 2026
- Good · 308 d · 86.5%
- Moderate · 46 d · 12.9%
- USG · 2 d · 0.6%
How did Wyoming County's air break down in 2025?
Across 356 monitored days, 308 fell in the Good band (AQI 0–50) and 0 reached Unhealthy or worse. The worst single day peaked at AQI 116 (USG).
EPA AQS →Share of monitored days at AQI 0-50 (Good band).
Share of monitored days above AQI 150 (Unhealthy or worse). Bar maxes at 10% (worst-county ceiling).
Where Wyoming County sits nationally
COUNT-derived placement among 951 US counties with at least 100 monitored days in 2025. Wyoming County's Good-day share is 86.5% - cleaner than 73% of that comparison set.
Wyoming County Good-day share vs. every US county
Share of monitored days in the Good band (AQI 0–50) - EPA AQS annual release
86.5% Cleaner than 73% higher than 73% of 951 US counties
Each bar is a band; taller bars hold more US counties. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Environmental Protection Agency, Air Quality System (AQS) · 2025
Pollutant Breakdown
Days where each pollutant was the primary driver of AQI readings in Wyoming County.
- PM2.5 · 356 days · 100.0%
2024 daily-monitor rhythm in Wyoming County
Month-by-month median AQI from EPA day-level county monitors (352 reported days in 2024). Feb posted the highest typical readings (median AQI 35, peak 64); Oct was cleanest at median 20. Summer months (Jun–Aug) averaged median AQI 32 vs 29 in Dec–Feb.
Five-year seasonal record
EPA day-level county files · 2020–20241,465 daily readings show a recurring local pattern: Feb has the highest matched-month median AQI (39), while Oct is lowest (25). Each cell is that month’s median daily AQI, not a current-air forecast.
Lower AQI is better. The colors summarize EPA AQI bands; gaps mean the county had no day-level record for that month.
Health Impact Assessment
Wyoming County's air quality is rated Good based on 86.5% good air days. No unhealthy air days were recorded in 2025.
Air quality was acceptable on 86.5% of monitored days in 2025, with a median AQI of 24. Unusually sensitive people can check real-time conditions at AirNow.gov during high-pollution events.
The dominant pollutant is PM2.5, driving AQI on 356 of 356 monitored days.
5-Year Air Quality Trend
Air quality is improving in Wyoming County. Highest Good-day share: 2024 (90.6%, 319 of 352 monitored days).
| Year | Good | Moderate | USG | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|---|
| 2020 | 300 | 61 | 0 | 0 | 33 | 79 |
| 2021 | 254 | 81 | 1 | 0 | 34 | 127 |
| 2022 | 219 | 51 | 0 | 0 | 34 | 65 |
| 2023 | 123 | 23 | 0 | 0 | 27 | 68 |
| 2024 | 319 | 33 | 0 | 0 | 26 | 68 |
| 2025 | 308 | 46 | 2 | 0 | 24 | 116 |
How does Wyoming County compare?
How Wyoming County compares
Data Sources
Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by County dataset, 2020–2025 (aqs.epa.gov). For current conditions (not shown here — this page is historical annual data), see EPA AirNow (airnow.gov). See our methodology for how AQI, median, and coverage figures are computed.
Informational only, not professional advice. Data from EPA AQS. See our disclaimer. Spotted a figure that looks wrong? Report a correction.
Source: U.S. EPA Air Quality System (AQS) Annual AQI by county summary files for Wyoming County, Pennsylvania · 2020–2025
Download this county's annual AQI row as CSV , with the same EPA fields and denominator shown on this page.
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.