Worst air pollution Hammond, today and tomorrow
Today (16 July): Air quality in Hammond is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 AM (O3: 36.7/100).
Tomorrow (17 July 2026): Air quality in Hammond is fair. All pollutants stay as today. Pollution peaks around 12:00 PM (O3: 37.6/100). 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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Hammond's air quality faces significant challenges from its position in the Chicago-Gary industrial corridor, with the BP Whiting Refinery — Indiana's largest — and surrounding steel and chemical operations generating elevated SO₂, benzene, and industrial PM2.5 alongside vehicle traffic on I-90. Lake Michigan provides some northern maritime ventilation, while the extraordinary industrial density of the Gary-Hammond-East Chicago corridor makes this one of the US's most persistently industrially impacted communities.
Today - 16 July | Pollution peaks at 11:00
AQI:
Fair
36.7/100
PM2.5 (fine particles):
Good
11.1/100
PM10 (coarse particles):
Good
11.4/100
NO2 (nitrogen dioxide):
Good
14.6/100
O3 (ozone):
Fair
36.7/100
SO2 (sulfur dioxide):
Good
1.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.5/100
PM1 (ultrafine particles):
Good
7.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Fair
37.6/100
PM2.5 (fine particles):
Good
7.2/100
PM10 (coarse particles):
Good
2.9/100
NO2 (nitrogen dioxide):
Good
18.4/100
O3 (ozone):
Fair
37.6/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Good
5.9/100
Pollen forecast in Hammond
View pollen forecastFrequently Asked Questions
Is air quality bad in Hammond right now?
On 16 July 2026, overall air quality in Hammond is fair. AQI is the main air quality indicator at 36.7/100. Pollution peaks around 11:00 AM (O3: 36.7/100).
Will air quality be worse tomorrow in Hammond?
On 17 July 2026, air quality conditions in Hammond will be similar to today, with AQI forecast at fair at 37.6/100. Pollution peaks around 12:00 PM (O3: 37.6/100).
When is air pollution at its worst in Hammond?
Conditions in Hammond vary noticeably across the seasons — spring and autumn tend to bring the cleanest, most stable air, whereas summer heat waves are the main driver of poor air quality, as ozone builds under stagnant, humid conditions. Lake-effect winds can help clear the air on many days near the Great Lakes shoreline.
Are air quality levels in Hammond 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