Worst air pollution Cincinnati, today and tomorrow
Today (16 July): Air quality in Cincinnati is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 PM (O3: 35.2/100).
Tomorrow (17 July 2026): Air quality in Cincinnati is fair. All pollutants stay as today. Pollution peaks around 12:00 PM (O3: 39.5/100). 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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Cincinnati's air quality is shaped by the Ohio River valley's tendency to channel and trap emissions under winter temperature inversions, with the surrounding Kentucky and Ohio hills limiting dispersal on calm days. Vehicle emissions from the I-275 and I-71 beltway corridors are the primary local source, while regional industrial and agricultural emissions elevate background ozone in summer.
Today - 16 July | Pollution peaks at 13:00
AQI:
Fair
35.2/100
PM2.5 (fine particles):
Good
11.8/100
PM10 (coarse particles):
Good
7.8/100
NO2 (nitrogen dioxide):
Good
4.5/100
O3 (ozone):
Fair
35.2/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Good
8.1/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Fair
39.5/100
PM2.5 (fine particles):
Good
14.6/100
PM10 (coarse particles):
Good
9.2/100
NO2 (nitrogen dioxide):
Good
4.3/100
O3 (ozone):
Fair
39.5/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.6/100
PM1 (ultrafine particles):
Good
9.4/100
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Frequently Asked Questions
Is air quality bad in Cincinnati right now?
On 16 July 2026, overall air quality in Cincinnati is fair. AQI is the main air quality indicator at 35.2/100. Pollution peaks around 1:00 PM (O3: 35.2/100).
Will air quality be worse tomorrow in Cincinnati?
On 17 July 2026, air quality conditions in Cincinnati will be similar to today, with AQI forecast at fair at 39.5/100. Pollution peaks around 12:00 PM (O3: 39.5/100).
When is air pollution at its worst in Cincinnati?
Air quality across Cincinnati rises and falls with the seasons: the mildest, cleanest weather usually falls in spring and autumn, but hot, humid summer conditions drive ozone formation, especially during heat waves. Calm, cold winter spells can occasionally allow local pollution to build up before the next weather system clears it.
Are air quality levels in Cincinnati 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