Worst air pollution Downtown Topeka - Topeka, today and tomorrow
Today (20 September): Air quality in Downtown Topeka is fair. AQI, PM2.5, NO2, and PM1 are fair; PM10, O3, SO2, CO, and HCHO are good. Pollution peaks around 10:00 AM (PM2.5: 27.1/100).
Tomorrow (21 September 2026): Air quality in Downtown Topeka is moderate. AQI worsens to moderate; NO2 increases to moderate; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 7:00 PM (NO2: 40.6/100). 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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Since Downtown Topeka is the city's compact downtown core, its air quality mirrors Topeka overall rather than following a separate local pattern. Local traffic and immediate surroundings can shift day-to-day readings slightly from the citywide figure.
Today - 20 September | Pollution peaks at 10:00
AQI:
Fair
27.1/100
PM2.5 (fine particles):
Fair
27.1/100
PM10 (coarse particles):
Good
18.5/100
NO2 (nitrogen dioxide):
Fair
20.9/100
O3 (ozone):
Good
19.7/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
2.8/100
PM1 (ultrafine particles):
Fair
23.4/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 19:00
AQI:
Moderate
40.6/100
PM2.5 (fine particles):
Fair
23.3/100
PM10 (coarse particles):
Good
15.7/100
NO2 (nitrogen dioxide):
Moderate
40.6/100
O3 (ozone):
Fair
22.1/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.2/100
PM1 (ultrafine particles):
Fair
21.2/100
Other Landmarks in Topeka
Frequently Asked Questions
Is air quality bad in Downtown Topeka right now?
On 20 September 2026, overall air quality in Downtown Topeka is fair. AQI is the main air quality indicator at 27.1/100. Pollution peaks around 10:00 AM (PM2.5: 27.1/100).
Will air quality be worse tomorrow in Downtown Topeka?
On 21 September 2026, air quality conditions in Downtown Topeka will be worse than today, with AQI forecast at moderate at 40.6/100. Pollution peaks around 7:00 PM (NO2: 40.6/100).
When is air pollution at its worst in Downtown Topeka?
Seasonal changes shape air quality at Downtown Topeka much as they do across Topeka: the calmest air usually arrives in winter, between planting and harvest dust events, but summer heat and humidity drive ozone formation, and agricultural dust can spike particulate levels during planting and harvest. Farm-heavy surrounding land is the main source of the seasonal dust spikes.
Are air quality levels in Downtown Topeka 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 20:27 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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