Worst air pollution Downtown Saint Marys - Saint Marys, today and tomorrow
Today (30 August): Air quality in Downtown Saint Marys is very poor. AQI and NO2 are very poor; O3 is fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 AM (NO2: 93.6/100).
Tomorrow (31 August 2026): Air quality in Downtown Saint Marys is poor. AQI improves to poor; PM2.5 increases to fair; NO2 decreases to poor; all other pollutants stay as today. Pollution peaks around 12:00 AM (NO2: 70.8/100). 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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In Downtown Saint Marys, with vehicle traffic relatively low, dust from nearby fields and occasional burning are the bigger day-to-day factors. Green space in the area offers some natural filtering, softening the local particulate load somewhat. Day-to-day readings still shift with wind direction, traffic volume, and weather conditions. Local monitoring for the wider area tends to track closely with this general pattern.
Today - 30 August | Pollution peaks at 01:00
AQI:
Very poor
93.6/100
PM2.5 (fine particles):
Good
19.3/100
PM10 (coarse particles):
Good
8.3/100
NO2 (nitrogen dioxide):
Very poor
93.6/100
O3 (ozone):
Fair
37.7/100
SO2 (sulfur dioxide):
Good
18.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.6/100
PM1 (ultrafine particles):
Good
14.7/100
Levels show the poorest local air quality during the day
Tomorrow - 31 August | Pollution peaks at 00:00
AQI:
Poor
70.8/100
PM2.5 (fine particles):
Fair
21.7/100
PM10 (coarse particles):
Good
12.9/100
NO2 (nitrogen dioxide):
Poor
70.8/100
O3 (ozone):
Fair
31.7/100
SO2 (sulfur dioxide):
Good
12.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.8/100
PM1 (ultrafine particles):
Good
10.9/100
Other Landmarks in Saint Marys
Frequently Asked Questions
Is air quality bad in Downtown Saint Marys right now?
On 30 August 2026, overall air quality in Downtown Saint Marys is very poor. AQI is the main air quality indicator at 93.6/100. Pollution peaks around 1:00 AM (NO2: 93.6/100).
Will air quality be worse tomorrow in Downtown Saint Marys?
On 31 August 2026, air quality conditions in Downtown Saint Marys will be better than today, with AQI forecast at poor at 70.8/100. Pollution peaks around 12:00 AM (NO2: 70.8/100).
When is air pollution at its worst in Downtown Saint Marys?
Winter is usually when particulate matter climbs highest locally, as wood and furnace heating combine with still, cold air that traps smoke close to the ground. As the weather warms, ozone tends to overtake other concerns in this area, since summer heat and sunlight are usually enough on their own to push ozone higher here.
Are air quality levels in Downtown Saint Marys 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 14:32 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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