Worst air pollution Westchester, today and tomorrow
Today (9 August): Air quality in Westchester is poor. AQI and PM10 are poor; O3 is fair; PM2.5 is medium; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 AM (PM10: 66.2/100).
Tomorrow (10 August 2026): Air quality in Westchester is poor. All pollutants stay as today. Pollution peaks around 11:00 PM (PM10: 64.8/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Westchester's air quality benefits from Miami-Dade County's flat suburban position, with consistent Atlantic and Gulf sea breezes providing reliable maritime ventilation across this unincorporated west Miami community. Vehicle emissions from SR-836 and the surrounding residential character are the primary local sources, while summer ozone from intense subtropical heat and the broader Miami metropolitan traffic is the primary warm-season concern throughout the year.
Today - 9 August | Pollution peaks at 06:00
AQI:
Poor
66.2/100
PM2.5 (fine particles):
Medium
48.5/100
PM10 (coarse particles):
Poor
66.2/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Fair
29.2/100
SO2 (sulfur dioxide):
Good
0.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
8.0/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 23:00
AQI:
Poor
64.8/100
PM2.5 (fine particles):
Medium
47.7/100
PM10 (coarse particles):
Poor
64.8/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Fair
30.4/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
10.6/100
Pollen forecast in Westchester
View pollen forecastFrequently Asked Questions
Is air quality bad in Westchester right now?
On 9 August 2026, overall air quality in Westchester is poor. AQI is the main air quality indicator at 66.2/100. Pollution peaks around 6:00 AM (PM10: 66.2/100).
Will air quality be worse tomorrow in Westchester?
On 10 August 2026, air quality conditions in Westchester will be similar to today, with AQI forecast at poor at 64.8/100. Pollution peaks around 11:00 PM (PM10: 64.8/100).
When is air pollution at its worst in Westchester?
Westchester sees air quality change through the year: frequent afternoon thunderstorms through the wet season help keep particulate levels down for much of the year, but without the wet season's regular storms, dry-season smoke can linger for days at a time. Inland areas tend to see more smoke buildup than locations closer to the coast.
Are air quality levels in Westchester 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.
Want to see air quality forecasts for other cities in United States?
Check air quality in other popular cities:
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.
Get the full experience in the Airmine app.