Worst air pollution Fremont Street Experience - Las Vegas, today and tomorrow
Today (9 August): Air quality in Fremont Street Experience is fair. PM2.5 is fair; AQI and O3 are medium; PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 AM (O3: 42.1/100).
Tomorrow (10 August 2026): Air quality in Fremont Street Experience is fair. AQI worsens to fair; PM2.5 decreases to good; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 8:00 AM (O3: 36.4/100). 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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Las Vegas's Fremont Street Experience air quality reflects the historic downtown Las Vegas entertainment corridor, with vehicle traffic on Fremont Street and the concentrated casino and entertainment canopy structure's operations contributing local sources. The enclosed Fremont Street canopy creates concentrated pedestrian and vehicle emissions, while the flat desert basin terrain generally allows reasonable dispersal outside the canopy zone and the corridor maintains moderate to elevated Las Vegas downtown metropolitan readings throughout most of the year.
Today - 9 August | Pollution peaks at 05:00
AQI:
Medium
42.1/100
PM2.5 (fine particles):
Fair
20.2/100
PM10 (coarse particles):
Good
7.4/100
NO2 (nitrogen dioxide):
Good
17.8/100
O3 (ozone):
Medium
42.1/100
SO2 (sulfur dioxide):
Good
6.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.3/100
PM1 (ultrafine particles):
Good
19.1/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 08:00
AQI:
Fair
36.4/100
PM2.5 (fine particles):
Good
17.7/100
PM10 (coarse particles):
Good
6.7/100
NO2 (nitrogen dioxide):
Good
12.8/100
O3 (ozone):
Fair
36.4/100
SO2 (sulfur dioxide):
Good
4.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.3/100
PM1 (ultrafine particles):
Good
13.6/100
Other Landmarks in Las Vegas
Sports venues in Las Vegas
Frequently Asked Questions
Is air quality bad in Fremont Street Experience right now?
On 9 August 2026, overall air quality in Fremont Street Experience is fair. PM2.5 is the main pollutant at 20.2/100. Pollution peaks around 5:00 AM (O3: 42.1/100).
Will air quality be worse tomorrow in Fremont Street Experience?
On 10 August 2026, air quality conditions in Fremont Street Experience will be similar to today, with AQI forecast at fair at 36.4/100. Pollution peaks around 8:00 AM (O3: 36.4/100).
When is air pollution at its worst in Fremont Street Experience?
Fremont Street Experience's air quality follows a clear seasonal pattern — the calmest, cleanest stretch usually falls between late autumn and early spring, whereas spring dust storms and summer ozone together make March through September the toughest stretch. Monsoon storms in July and August can either clear the air with rain or stir up dust ahead of the storm front.
Are air quality levels in Fremont Street Experience 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: 10 August 2026 at 02:34 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.
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