Springfield, MA Air Quality in April

Across 2019–2025, Springfield's April air quality had a median AQI of 44 (Good) over 210 monitored days in the Springfield, MA area. 0.5% of April days (1 of 210) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 74.8% of days. The cleanest April on record here was 2020 (median AQI 43, 0 days above 100) and the worst was 2023 (median 53, 1 day above 100, peak AQI 136).

44
Median AQI
Good
0.5%
Days above AQI 100
1 of 210 days
55
90th percentile AQI
worst 1 day in 10
136
Peak AQI
Unhealthy for Sensitive Groups
O3
Main pollutant
74.8% of days
77.1%
Good days
162 of 210
  • Good: 77.1%
  • Moderate: 22.4%
  • Unhealthy for Sensitive Groups: 0.5%
  • Unhealthy or worse: 0.0%

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QUICK ANSWER

How is the air in Springfield in April?

Good on a typical day: median AQI 44 across 2019–2025, with 0.5% of April days above AQI 100. Ground-level ozone is the main driver.

  • 77.1% of April days were Good (AQI 0–50), 22.4% Moderate (51–100).
  • 1 day of 210 reached AQI 101+; the April peak was 136.
  • Best April: 2020; worst April: 2023.

Frequently asked questions

What is the air quality like in Springfield in April?

Across 2019–2025, the median daily AQI in Springfield in April was 44 (Good). 77.1% of days were Good, 22.4% Moderate, and 0.5% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.

Is April a good time for outdoor exercise in Springfield?

A typical April day in Springfield sits in the Good range (median AQI 44), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of April days reached AQI 101+ in 2019–2025.

Which pollutant causes Springfield's April air quality problems?

Ground-level ozone set the daily AQI on 74.8% of April days in Springfield. The highest April AQI recorded in 2019–2025 was 136 (Unhealthy for Sensitive Groups), in 2023.

Springfield April air quality, year by year

Springfield April air quality by year (Springfield, MA, EPA AQS daily AQI)

YearDays monitoredMedian AQIDays above 100Peak AQIMain pollutant
20193044054O3
2020cleanest3043055O3
20213044064O3
20223043064O3
2023worst30531136PM2.5
20243043064O3
20253044097O3

What April air means in Springfield

A typical April day in Springfield sits in the Good range (median AQI 44), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of April days reached AQI 101+ in 2019–2025.

April's median AQI of 44 is in line with Springfield's whole-year median of 44, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median April AQI across every EPA metro area (100,677 metro-days, 2019–2025) is 44, so Springfield runs in line with the national April norm; 0.5% of its April days topped AQI 100 versus 0.7% nationally (about the same).

April is part of Springfield's spring season (March, April, May); the spring page pools all three months.

Activity-specific thresholds: running, cycling, kids' sports.

Right now in Springfield

The latest EPA AirNow observation puts Springfield's AQI at 33 (PM2.5). The figures above are multi-year month statistics, not today's reading.

View current Springfield air quality →

Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Springfield, MA), 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.