Worst air pollution Colby, today and tomorrow
Today (9 August): Air quality in Colby is fair. PM2.5, O3, and PM1 are fair; AQI and NO2 are medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 3:00 AM (NO2: 43.2/100).
Tomorrow (10 August 2026): Air quality in Colby is fair. AQI worsens to fair; NO2 increases to fair; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 1:00 AM (NO2: 37.1/100). 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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Colby's air quality is shaped largely by dry high-plains wind; wind-driven dust is the dominant seasonal air-quality factor. Colby doesn't see much year-to-year variation in this basic pattern, though individual weeks can differ. Short-term spikes are still possible even during the generally cleaner stretches of the year.
Today - 9 August | Pollution peaks at 03:00
AQI:
Medium
43.2/100
PM2.5 (fine particles):
Fair
29.0/100
PM10 (coarse particles):
Good
11.5/100
NO2 (nitrogen dioxide):
Medium
43.2/100
O3 (ozone):
Fair
35.2/100
SO2 (sulfur dioxide):
Good
17.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.7/100
PM1 (ultrafine particles):
Fair
20.6/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 01:00
AQI:
Fair
37.1/100
PM2.5 (fine particles):
Fair
26.8/100
PM10 (coarse particles):
Good
11.5/100
NO2 (nitrogen dioxide):
Fair
37.1/100
O3 (ozone):
Fair
35.7/100
SO2 (sulfur dioxide):
Good
17.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.0/100
PM1 (ultrafine particles):
Good
19.3/100
Pollen forecast in Colby
View pollen forecastFrequently Asked Questions
Is air quality bad in Colby right now?
On 9 August 2026, overall air quality in Colby is fair. O3 is the main pollutant at 35.2/100. Pollution peaks around 3:00 AM (NO2: 43.2/100).
Will air quality be worse tomorrow in Colby?
On 10 August 2026, air quality conditions in Colby will be similar to today, with AQI forecast at fair at 37.1/100. Pollution peaks around 1:00 AM (NO2: 37.1/100).
When is air pollution at its worst in Colby?
Colby sees air quality change through the year, as winter generally brings the cleanest air, aside from brief inversion episodes during calm cold spells; by contrast, both spring planting and autumn harvest bring short bursts of elevated dust and smoke. Farm-heavy surrounding land is the main source of the seasonal dust spikes.
Are air quality levels in Colby 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: 9 August 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.
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