Worst air pollution Garden Grove, today and tomorrow
Today (9 August): Air quality in Garden Grove is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 AM (O3: 23.9/100).
Tomorrow (10 August 2026): Air quality in Garden Grove is fair. All pollutants stay as today. Pollution peaks around 10:00 AM (O3: 22.5/100). 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.
Garden Grove's air quality reflects the Orange County portion of the Los Angeles basin, sharing the region's temperature inversion problem with vehicle emissions from SR-22 and I-5 generating elevated NOₓ alongside the dense suburban character of this central Orange County city. Pacific sea breezes provide afternoon ventilation that generally gives Orange County better conditions than the deeper San Fernando Valley, while Santa Ana wind events temporarily reverse the marine layer ventilation and can worsen air quality across the entire basin.
Today - 9 August | Pollution peaks at 04:00
AQI:
Fair
23.9/100
PM2.5 (fine particles):
Good
11.3/100
PM10 (coarse particles):
Good
12.3/100
NO2 (nitrogen dioxide):
Good
0.2/100
O3 (ozone):
Fair
23.9/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.2/100
PM1 (ultrafine particles):
Good
4.5/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 10:00
AQI:
Fair
22.5/100
PM2.5 (fine particles):
Good
11.0/100
PM10 (coarse particles):
Good
11.6/100
NO2 (nitrogen dioxide):
Good
0.7/100
O3 (ozone):
Fair
22.5/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
5.1/100
Pollen forecast in Garden Grove
View pollen forecastFrequently Asked Questions
Is air quality bad in Garden Grove right now?
On 9 August 2026, overall air quality in Garden Grove is fair. AQI is the main air quality indicator at 23.9/100. Pollution peaks around 4:00 AM (O3: 23.9/100).
Will air quality be worse tomorrow in Garden Grove?
On 10 August 2026, air quality conditions in Garden Grove will be similar to today, with AQI forecast at fair at 22.5/100. Pollution peaks around 10:00 AM (O3: 22.5/100).
When is air pollution at its worst in Garden Grove?
Conditions in Garden Grove vary noticeably across the seasons: the shortest stretch of clean air usually falls in the wetter winter months, but from August into October, wildfire smoke can add sharp particulate spikes on top of the usual summer ozone. Coastal breezes offer some relief compared to inland valley locations that see heavier smog buildup.
Are air quality levels in Garden Grove 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.