Worst air pollution Millennium Park - Grand Rapids, today and tomorrow
Today (16 July): Air quality in Millennium Park is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 35.4/100).
Tomorrow (17 July 2026): Air quality in Millennium Park is fair. All pollutants stay as today. Pollution peaks around 10:00 AM (O3: 33.6/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Grand Rapids' Millennium Park on the southwest side records good air quality, with the large reclaimed landfill park area and low surrounding traffic density keeping readings well below the downtown and industrial corridor averages. The Grand River floodplain nearby contributes additional ventilation on prevailing westerly wind days.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
35.4/100
PM2.5 (fine particles):
Good
8.9/100
PM10 (coarse particles):
Good
7.6/100
NO2 (nitrogen dioxide):
Good
6.4/100
O3 (ozone):
Fair
35.4/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.6/100
PM1 (ultrafine particles):
Good
4.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 10:00
AQI:
Fair
33.6/100
PM2.5 (fine particles):
Good
8.0/100
PM10 (coarse particles):
Good
6.3/100
NO2 (nitrogen dioxide):
Good
4.7/100
O3 (ozone):
Fair
33.6/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Good
4.6/100
Other Landmarks in Grand Rapids
Frequently Asked Questions
Is air quality bad in Millennium Park right now?
On 16 July 2026, overall air quality in Millennium Park is fair. AQI is the main air quality indicator at 35.4/100. Pollution peaks around 12:00 PM (O3: 35.4/100).
Will air quality be worse tomorrow in Millennium Park?
On 17 July 2026, air quality conditions in Millennium Park will be similar to today, with AQI forecast at fair at 33.6/100. Pollution peaks around 10:00 AM (O3: 33.6/100).
When is air pollution at its worst in Millennium Park?
Conditions at Millennium Park vary noticeably across the seasons. In short, the cleanest stretches usually come in spring and fall, between the summer ozone season and the calmer winter pollution episodes, whereas prolonged summer heat waves are when air quality most often dips into unhealthy territory. Calm, cold winter spells can occasionally allow local pollution to build up before the next weather system clears it.
Are air quality levels in Millennium Park based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app