Worst air pollution Bloomington, Minnesota, today and tomorrow
Today (20 September): Air quality in Bloomington, Minnesota is fair. AQI and PM2.5 are fair; PM10, NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 AM (PM2.5: 20.8/100).
Tomorrow (21 September 2026): Air quality in Bloomington, Minnesota is good. AQI improves to good; PM2.5 decreases to good; all other pollutants stay as today. Pollution peaks around 6:00 AM (PM2.5: 17.7/100). 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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Bloomington's air quality in Minnesota reflects the flat Minnesota River valley position adjacent to Minneapolis-Saint Paul International Airport, with concentrated aviation and ground vehicle emissions alongside vehicle traffic on I-494 generating elevated NOₓ and aviation PM2.5. The Minnesota River floodplain provides limited ventilation, while the airport's flight corridor makes Bloomington one of the Twin Cities metropolitan area's more aviation-influenced suburban environments throughout the year.
Today - 20 September | Pollution peaks at 06:00
AQI:
Fair
20.8/100
PM2.5 (fine particles):
Fair
20.8/100
PM10 (coarse particles):
Good
11.2/100
NO2 (nitrogen dioxide):
Good
7.3/100
O3 (ozone):
Good
16.2/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
4.9/100
PM1 (ultrafine particles):
Good
2.2/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 06:00
AQI:
Good
17.7/100
PM2.5 (fine particles):
Good
17.7/100
PM10 (coarse particles):
Good
8.7/100
NO2 (nitrogen dioxide):
Good
7.3/100
O3 (ozone):
Good
13.2/100
SO2 (sulfur dioxide):
Good
0.5/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
5.1/100
PM1 (ultrafine particles):
Good
2.1/100
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Frequently Asked Questions
Is air quality bad in Bloomington, Minnesota right now?
On 20 September 2026, overall air quality in Bloomington, Minnesota is fair. AQI is the main air quality indicator at 20.8/100. Pollution peaks around 6:00 AM (PM2.5: 20.8/100).
Will air quality be worse tomorrow in Bloomington, Minnesota?
On 21 September 2026, air quality conditions in Bloomington, Minnesota will be better than today, with AQI forecast at good at 17.7/100. Pollution peaks around 6:00 AM (PM2.5: 17.7/100).
When is air pollution at its worst in Bloomington, Minnesota?
Seasonal changes shape air quality across Bloomington: winter generally brings the cleanest air, aside from brief inversion episodes during calm cold spells, 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 Bloomington, Minnesota 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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