Worst air pollution University District District 4 - Columbus, today and tomorrow
Today (20 September): Air quality in University District District 4 is fair. AQI, PM2.5, NO2, and PM1 are fair; PM10, O3, SO2, CO, and HCHO are good. Pollution peaks around 2:00 PM (NO2: 39.0/100).
Tomorrow (21 September 2026): Air quality in University District District 4 is moderate. AQI worsens to moderate; PM2.5 decreases to good; NO2 increases to moderate; O3 increases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 3:00 PM (NO2: 40.5/100). Airmine updates local air quality forecasts four times daily.
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In University District District 4, urban density and near-constant vehicle traffic together keep particulate and nitrogen dioxide readings elevated year-round. Green space roughly 200 meters off offers some natural filtering, softening the local particulate load somewhat. Actual air quality on a given day still depends heavily on local wind and weather conditions.
Today - 20 September | Pollution peaks at 14:00
AQI:
Fair
39.0/100
PM2.5 (fine particles):
Fair
27.5/100
PM10 (coarse particles):
Good
16.5/100
NO2 (nitrogen dioxide):
Fair
39.0/100
O3 (ozone):
Good
18.3/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
2.7/100
PM1 (ultrafine particles):
Fair
38.7/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 15:00
AQI:
Moderate
40.5/100
PM2.5 (fine particles):
Good
18.2/100
PM10 (coarse particles):
Good
12.6/100
NO2 (nitrogen dioxide):
Moderate
40.5/100
O3 (ozone):
Fair
22.5/100
SO2 (sulfur dioxide):
Good
2.1/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
19.8/100
Other Landmarks in Columbus
Sports venues in Columbus
Frequently Asked Questions
Is air quality bad in University District District 4 right now?
On 20 September 2026, overall air quality in University District District 4 is fair. AQI is the main air quality indicator at 39.0/100. Pollution peaks around 2:00 PM (NO2: 39.0/100).
Will air quality be worse tomorrow in University District District 4?
On 21 September 2026, air quality conditions in University District District 4 will be worse than today, with AQI forecast at moderate at 40.5/100. Pollution peaks around 3:00 PM (NO2: 40.5/100).
When is air pollution at its worst in University District District 4?
Winter is usually when particulate matter climbs highest across the city, when winter inversions hold traffic and heating emissions in place over the city for days at a time. Warmer months bring a different problem here: ground-level ozone, with strong sun, heat, and traffic emissions together driving ozone higher through the summer months.
Are air quality levels in University District District 4 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 20 September 2026 at 14:33 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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