Worst air pollution Colonial Quarter - Saint Augustine, today and tomorrow
Today (20 September): Air quality in Colonial Quarter is poor. AQI and PM10 are poor; PM2.5 is moderate; NO2, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (PM10: 72.8/100).
Tomorrow (21 September 2026): Air quality in Colonial Quarter is moderate. AQI improves to moderate; PM10 decreases to moderate; all other pollutants stay as today. Pollution peaks around 9:00 AM (PM10: 55.0/100). 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 Colonial Quarter, with lighter traffic here, particulate matter tends to come more from farmland dust and occasional burning than from vehicles. Trees and green space nearby provide a partial buffer, catching particulate matter before it spreads further. Nearby areas with a similar setup tend to show a comparable air quality baseline.
Today - 20 September | Pollution peaks at 10:00
AQI:
Poor
72.8/100
PM2.5 (fine particles):
Moderate
51.8/100
PM10 (coarse particles):
Poor
72.8/100
NO2 (nitrogen dioxide):
Good
0.3/100
O3 (ozone):
Good
9.2/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.4/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Good
5.1/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 09:00
AQI:
Moderate
55.0/100
PM2.5 (fine particles):
Moderate
46.0/100
PM10 (coarse particles):
Moderate
55.0/100
NO2 (nitrogen dioxide):
Good
0.4/100
O3 (ozone):
Good
10.3/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.4/100
HCHO (formaldehyde):
Good
0.8/100
PM1 (ultrafine particles):
Good
4.3/100
Other Landmarks in Saint Augustine
Frequently Asked Questions
Is air quality bad in Colonial Quarter right now?
On 20 September 2026, overall air quality in Colonial Quarter is poor. AQI is the main air quality indicator at 72.8/100. Pollution peaks around 10:00 AM (PM10: 72.8/100).
Will air quality be worse tomorrow in Colonial Quarter?
On 21 September 2026, air quality conditions in Colonial Quarter will be better than today, with AQI forecast at moderate at 55.0/100. Pollution peaks around 9:00 AM (PM10: 55.0/100).
When is air pollution at its worst in Colonial Quarter?
January through March tends to be calm here, with wind speeds averaging around 13 km/h and temperatures near 17°C -- conditions cool and still enough for particulate matter and smoke to settle near the ground instead of dispersing. This area's warmest stretch runs from July to September, averaging around 28°C -- hot enough for strong sun and heat to drive ground-level ozone formation.
Are air quality levels in Colonial Quarter 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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