Worst air pollution Meridian Hill Park - Washington, today and tomorrow
Today (9 August): Air quality in Meridian Hill Park is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 32.4/100).
Tomorrow (10 August 2026): Air quality in Meridian Hill Park is fair. All pollutants stay as today. Pollution peaks around 9:00 AM (O3: 36.0/100). 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.
Washington's Meridian Hill Park air quality reflects the elevated Northwest DC hilltop position, with vehicle traffic on 16th Street NW — a major DC commuter arterial — contributing the primary local concern. The park's elevated position provides marginally better dispersal than the surrounding street canyon, while the 16th Street corridor's heavy commuter traffic and the dense surrounding residential character maintain moderate to elevated Washington DC inner urban readings throughout most of the year.
Today - 9 August | Pollution peaks at 12:00
AQI:
Fair
32.4/100
PM2.5 (fine particles):
Good
10.4/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Good
7.7/100
O3 (ozone):
Fair
32.4/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.4/100
PM1 (ultrafine particles):
Good
7.3/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 09:00
AQI:
Fair
36.0/100
PM2.5 (fine particles):
Good
9.4/100
PM10 (coarse particles):
Good
3.8/100
NO2 (nitrogen dioxide):
Good
3.5/100
O3 (ozone):
Fair
36.0/100
SO2 (sulfur dioxide):
Good
1.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Good
6.1/100
Other Landmarks in Washington
Sports venues in Washington
Frequently Asked Questions
Is air quality bad in Meridian Hill Park right now?
On 9 August 2026, overall air quality in Meridian Hill Park is fair. AQI is the main air quality indicator at 32.4/100. Pollution peaks around 12:00 PM (O3: 32.4/100).
Will air quality be worse tomorrow in Meridian Hill Park?
On 10 August 2026, air quality conditions in Meridian Hill Park will be similar to today, with AQI forecast at fair at 36.0/100. Pollution peaks around 9:00 AM (O3: 36.0/100).
When is air pollution at its worst in Meridian Hill Park?
Meridian Hill Park experiences the same seasonal air quality swings as the rest of Washington. In short, the cleanest stretch of the year usually comes in winter, whereas extended summer heat waves, often worsened by regional haze, bring the toughest air quality stretch. Suburban and rural areas generally see less of the persistent traffic-driven pollution that affects the urban core.
Are air quality levels in Meridian Hill Park 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: 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.
Get the full experience in the Airmine app.