Worst air pollution DeKalb, today and tomorrow
Today (30 August): Air quality in DeKalb is moderate. AQI and NO2 are moderate; O3 is fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 54.7/100).
Tomorrow (31 August 2026): Air quality in DeKalb is moderate. All pollutants stay as today. Pollution peaks around 12:00 AM (NO2: 56.6/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Air quality in DeKalb is driven mostly by Plains agricultural dust — spring planting and harvest bring short bursts of elevated dust. Day-to-day conditions in DeKalb can still vary with local weather, wind direction, and time of year. Checking current readings is still the best way to plan outdoor activity around DeKalb.
Today - 30 August | Pollution peaks at 23:00
AQI:
Moderate
54.7/100
PM2.5 (fine particles):
Good
9.8/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Moderate
54.7/100
O3 (ozone):
Fair
38.1/100
SO2 (sulfur dioxide):
Good
4.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Good
7.9/100
Levels show the poorest local air quality during the day
Tomorrow - 31 August | Pollution peaks at 00:00
AQI:
Moderate
56.6/100
PM2.5 (fine particles):
Good
11.3/100
PM10 (coarse particles):
Good
6.1/100
NO2 (nitrogen dioxide):
Moderate
56.6/100
O3 (ozone):
Fair
37.1/100
SO2 (sulfur dioxide):
Good
4.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.3/100
PM1 (ultrafine particles):
Good
8.2/100
Pollen forecast in DeKalb
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in DeKalb
Sports venues in DeKalb
Frequently Asked Questions
Is air quality bad in DeKalb right now?
On 30 August 2026, overall air quality in DeKalb is moderate. AQI is the main air quality indicator at 54.7/100. Pollution peaks around 11:00 PM (NO2: 54.7/100).
Will air quality be worse tomorrow in DeKalb?
On 31 August 2026, air quality conditions in DeKalb will be similar to today, with AQI forecast at moderate at 56.6/100. Pollution peaks around 12:00 AM (NO2: 56.6/100).
When is air pollution at its worst in DeKalb?
DeKalb's air quality has a clear seasonal rhythm — spring and autumn tend to bring the cleanest, most stable air, whereas the hottest, most humid summer days bring the year's worst ozone readings. Calm, cold winter spells can occasionally allow local pollution to build up before the next weather system clears it.
Are air quality levels in DeKalb 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.
Want to see air quality forecasts for other cities in United States?
Check air quality in other popular cities:
Data provided by Airmine — Last update: 30 August 2026 at 14:32 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.
Get the full experience in the Airmine app.