Worst air pollution Stewart Ridge - Calumet Park, today and tomorrow
Today (20 September): Air quality in Stewart Ridge is moderate. AQI and NO2 are moderate; PM2.5, PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (NO2: 42.8/100).
Tomorrow (21 September 2026): Air quality in Stewart Ridge is fair. AQI improves to fair; NO2 decreases to fair; all other pollutants stay as today. Pollution peaks around 4:00 PM (NO2: 31.3/100). Airmine updates local air quality forecasts four times daily.
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In Stewart Ridge, traffic is comparatively light, so nearby farmland dust and seasonal burning shape air quality more than road congestion. Tree cover around 371 meters from here softens the impact somewhat, catching particulates before they disperse further. Day-to-day readings still shift with wind direction, traffic volume, and weather conditions.
Today - 20 September | Pollution peaks at 16:00
AQI:
Moderate
42.8/100
PM2.5 (fine particles):
Good
15.7/100
PM10 (coarse particles):
Good
9.7/100
NO2 (nitrogen dioxide):
Moderate
42.8/100
O3 (ozone):
Good
18.4/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.5/100
PM1 (ultrafine particles):
Good
6.2/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 16:00
AQI:
Fair
31.3/100
PM2.5 (fine particles):
Good
16.1/100
PM10 (coarse particles):
Good
9.9/100
NO2 (nitrogen dioxide):
Fair
31.3/100
O3 (ozone):
Good
19.1/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
6.6/100
PM1 (ultrafine particles):
Good
6.1/100
Other Landmarks in Calumet Park
Frequently Asked Questions
Is air quality bad in Stewart Ridge right now?
On 20 September 2026, overall air quality in Stewart Ridge is moderate. AQI is the main air quality indicator at 42.8/100. Pollution peaks around 4:00 PM (NO2: 42.8/100).
Will air quality be worse tomorrow in Stewart Ridge?
On 21 September 2026, air quality conditions in Stewart Ridge will be better than today, with AQI forecast at fair at 31.3/100. Pollution peaks around 4:00 PM (NO2: 31.3/100).
When is air pollution at its worst in Stewart Ridge?
Winter tends to bring the year's worst particulate spikes here, as rural heating sources add up under inversions that keep smoke from dispersing. Summer heat pushes ozone to the forefront of local air quality concerns, which forms readily in strong sunlight and heat, and can spike further during wildfire smoke events.
Are air quality levels in Stewart Ridge 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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