Grand Rapids Air Quality in Spring

Across 2019–2025, Grand Rapids's spring (March–May) air quality had a median AQI of 45 (Good) over 644 monitored days in the Grand Rapids-Wyoming, MI area. 0.6% of spring days (4 of 644) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 52.8% of days. The cleanest spring on record here was 2020 (median AQI 42, 0 days above 100) and the worst was 2023 (median 48, 2 days above 100, peak AQI 105).

45
Median AQI
Good
0.6%
Days above AQI 100
4 of 644 days
63
90th percentile AQI
worst 1 day in 10
139
Peak AQI
Unhealthy for Sensitive Groups
O3
Main pollutant
52.8% of days
62.7%
Good days
404 of 644
  • Good: 62.7%
  • Moderate: 36.6%
  • Unhealthy for Sensitive Groups: 0.6%
  • Unhealthy or worse: 0.0%

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QUICK ANSWER

How is the air in Grand Rapids in spring?

Good on a typical day: median AQI 45 across 2019–2025, with 0.6% of spring days above AQI 100. Ground-level ozone is the main driver.

  • 62.7% of spring days were Good (AQI 0–50), 36.6% Moderate (51–100).
  • 4 days of 644 reached AQI 101+; the spring peak was 139.
  • Cleanest month: March; worst month: May.

Frequently asked questions

What is the air quality like in Grand Rapids in spring?

Across 2019–2025, the median daily AQI in Grand Rapids in spring was 45 (Good). 62.7% of days were Good, 36.6% Moderate, and 0.6% reached Unhealthy for Sensitive Groups or worse, based on 644 monitored days in EPA's Air Quality System.

Is spring a good time for outdoor exercise in Grand Rapids?

A typical spring day in Grand Rapids sits in the Good range (median AQI 45), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of spring days reached AQI 101+ in 2019–2025.

Which pollutant causes Grand Rapids's spring air quality problems?

Ground-level ozone set the daily AQI on 52.8% of spring days in Grand Rapids. The highest spring AQI recorded in 2019–2025 was 139 (Unhealthy for Sensitive Groups), in 2023.

Grand Rapids spring air quality, year by year

Grand Rapids spring air quality by year (Grand Rapids-Wyoming, MI, EPA AQS daily AQI)

YearDays monitoredMedian AQIDays above 100Peak AQIMain pollutant
201992440100O3
2020cleanest9242067O3
202192471107O3
20229245082O3
2023worst92482105O3
20249245090O3
202592491139PM2.5

What spring air means in Grand Rapids

A typical spring day in Grand Rapids sits in the Good range (median AQI 45), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of spring days reached AQI 101+ in 2019–2025.

Spring's median AQI of 45 is below Grand Rapids's whole-year median of 51, making it one of the area's cleaner periods. Nationally, the median Spring AQI across every EPA metro area (307,196 metro-days, 2019–2025) is 43, so Grand Rapids runs in line with the national Spring norm; 0.6% of its Spring days topped AQI 100 versus 0.8% nationally (about the same).

Within the season, March is the cleanest month (median AQI 44, 0.5% of days above 100) and May the worst (median 48, 0.9% above 100).

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

Right now in Grand Rapids

The latest EPA AirNow observation puts Grand Rapids's AQI at 53 (PM2.5). The figures above are multi-year season statistics, not today's reading.

View current Grand Rapids air quality →

Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Grand Rapids-Wyoming, MI), 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.