Worst air pollution Holy Trinity-Longfellow - La Crosse, today and tomorrow
Today (30 August): Air quality in Holy Trinity-Longfellow is moderate. AQI and NO2 are moderate; O3 is fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 AM (NO2: 57.3/100).
Tomorrow (31 August 2026): Air quality in Holy Trinity-Longfellow is moderate. All pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 53.7/100). Airmine updates local air quality forecasts four times daily.
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In Holy Trinity-Longfellow, light local traffic means surrounding farmland activity, not congestion, is the bigger day-to-day influence on air quality. Vegetation nearby provides a modest natural filter for airborne particulates. Daily conditions can shift noticeably depending on wind, temperature, and traffic patterns. This general baseline tends to hold across nearby areas with similar traffic and land use.
Today - 30 August | Pollution peaks at 00:00
AQI:
Moderate
57.3/100
PM2.5 (fine particles):
Good
12.4/100
PM10 (coarse particles):
Good
5.0/100
NO2 (nitrogen dioxide):
Moderate
57.3/100
O3 (ozone):
Fair
22.2/100
SO2 (sulfur dioxide):
Good
6.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.0/100
PM1 (ultrafine particles):
Good
7.8/100
Levels show the poorest local air quality during the day
Tomorrow - 31 August | Pollution peaks at 23:00
AQI:
Moderate
53.7/100
PM2.5 (fine particles):
Good
19.6/100
PM10 (coarse particles):
Good
7.9/100
NO2 (nitrogen dioxide):
Moderate
53.7/100
O3 (ozone):
Fair
25.2/100
SO2 (sulfur dioxide):
Good
7.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.7/100
PM1 (ultrafine particles):
Good
11.3/100
Other Landmarks in La Crosse
Sports venues in La Crosse
Frequently Asked Questions
Is air quality bad in Holy Trinity-Longfellow right now?
On 30 August 2026, overall air quality in Holy Trinity-Longfellow is moderate. AQI is the main air quality indicator at 57.3/100. Pollution peaks around 12:00 AM (NO2: 57.3/100).
Will air quality be worse tomorrow in Holy Trinity-Longfellow?
On 31 August 2026, air quality conditions in Holy Trinity-Longfellow will be similar to today, with AQI forecast at moderate at 53.7/100. Pollution peaks around 11:00 PM (NO2: 53.7/100).
When is air pollution at its worst in Holy Trinity-Longfellow?
This area typically sees its worst air quality during the winter season, as rural heating sources add up under inversions that keep smoke from dispersing. As temperatures rise, ozone typically becomes the dominant summer issue around here, as warm, sunny conditions drive ozone formation, sometimes worsened by smoke from distant wildfires. Spring and autumn tend to offer a breather, with steadier winds helping keep pollutant levels down.
Are air quality levels in Holy Trinity-Longfellow 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: 30 August 2026 at 20:26 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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