Scranton Air Quality in May
Across 2019–2025, Scranton's May air quality had a median AQI of 41 (Good) over 217 monitored days in the Scranton--Wilkes-Barre--Hazleton, PA area. 0.0% of May days (0 of 217) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 73.7% of days. The cleanest May on record here was 2025 (median AQI 34, 0 days above 100) and the worst was 2022 (median 46, 0 days above 100, peak AQI 62).
- Good: 78.8%
- Moderate: 21.2%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How is the air in Scranton in May?
Good on a typical day: median AQI 41 across 2019–2025, with 0.0% of May days above AQI 100. Ground-level ozone is the main driver.
- ✓78.8% of May days were Good (AQI 0–50), 21.2% Moderate (51–100).
- ✓0 days of 217 reached AQI 101+; the May peak was 90.
- ✓Best May: 2025; worst May: 2022.
Frequently asked questions
What is the air quality like in Scranton in May?▾
Across 2019–2025, the median daily AQI in Scranton in May was 41 (Good). 78.8% of days were Good, 21.2% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is May a good time for outdoor exercise in Scranton?▾
A typical May day in Scranton sits in the Good range (median AQI 41), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of May days reached AQI 101+ in 2019–2025.
Which pollutant causes Scranton's May air quality problems?▾
Ground-level ozone set the daily AQI on 73.7% of May days in Scranton. The highest May AQI recorded in 2019–2025 was 90 (Moderate), in 2022.
Scranton May air quality, year by year
Scranton May air quality by year (Scranton--Wilkes-Barre--Hazleton, PA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 40 | 0 | 57 | O3 |
| 2020 | 31 | 42 | 0 | 67 | O3 |
| 2021 | 31 | 39 | 0 | 90 | O3 |
| 2022worst | 31 | 46 | 0 | 62 | PM2.5 |
| 2023 | 31 | 45 | 0 | 84 | O3 |
| 2024 | 31 | 40 | 0 | 74 | O3 |
| 2025cleanest | 31 | 34 | 0 | 90 | O3 |
What May air means in Scranton
A typical May day in Scranton sits in the Good range (median AQI 41), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of May days reached AQI 101+ in 2019–2025.
May's median AQI of 41 is in line with Scranton's whole-year median of 41, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median May AQI across every EPA metro area (104,064 metro-days, 2019–2025) is 44, so Scranton runs in line with the national May norm; 0.0% of its May days topped AQI 100 versus 1.3% nationally (below average).
May is part of Scranton's spring season (March, April, May); the spring page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Scranton
The latest EPA AirNow observation puts Scranton's AQI at 42 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Scranton air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Scranton--Wilkes-Barre--Hazleton, PA), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.