Worst air pollution National Zoo - Washington, today and tomorrow
Today (9 August): Air quality in National Zoo 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 National Zoo 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.
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National Zoo sits at a wooded zoo campus in Rock Creek Park with mature oak and beech canopy; air quality here tracks closely with the wider Washington area and the same regional influences that shape it. Checking conditions closer to visit time is still the best way to plan around this specific site.
Today - 9 August | Pollution peaks at 12:00
AQI:
Fair
32.4/100
PM2.5 (fine particles):
Good
9.3/100
PM10 (coarse particles):
Good
3.4/100
NO2 (nitrogen dioxide):
Good
3.8/100
O3 (ozone):
Fair
32.4/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.4/100
PM1 (ultrafine particles):
Good
6.6/100
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
8.4/100
PM10 (coarse particles):
Good
3.4/100
NO2 (nitrogen dioxide):
Good
1.8/100
O3 (ozone):
Fair
36.0/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Good
5.5/100
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Frequently Asked Questions
Is air quality bad in National Zoo right now?
On 9 August 2026, overall air quality in National Zoo 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 National Zoo?
On 10 August 2026, air quality conditions in National Zoo 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 National Zoo?
Air quality around National Zoo changes with the seasons, as the calmest air of the year usually arrives well after the summer ozone season fades; by contrast, extended summer heat waves, often worsened by regional haze, bring the toughest air quality stretch. Dense urban traffic corridors add a persistent background level of pollution that varies less by season than ozone does.
Are air quality levels in National Zoo 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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