Worst air pollution Orange, today and tomorrow
Today (15 July): Air quality in Orange is fair. AQI, PM10, and O3 are fair; PM2.5, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (O3: 31.2/100).
Tomorrow (16 July 2026): Air quality in Orange is fair. All pollutants stay as today. Pollution peaks around 9:00 AM (O3: 29.9/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Orange's air quality in California reflects the northern Orange County position in the greater Los Angeles basin, with vehicle emissions from SR-55 and the surrounding suburban and commercial character contributing elevated NOₓ. The basin inversion affects all of Orange County, while Pacific sea breezes provide better afternoon ventilation than the deeper San Fernando Valley, and the SR-55 Garden Grove Freeway corridor generates consistent vehicle emissions through this central Orange County city that generally tracks at moderate Los Angeles basin levels throughout the year.
Today - 15 July | Pollution peaks at 08:00
AQI:
Fair
31.2/100
PM2.5 (fine particles):
Good
14.6/100
PM10 (coarse particles):
Fair
22.6/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
31.2/100
SO2 (sulfur dioxide):
Good
0.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
2.5/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 09:00
AQI:
Fair
29.9/100
PM2.5 (fine particles):
Good
13.5/100
PM10 (coarse particles):
Fair
23.3/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
29.9/100
SO2 (sulfur dioxide):
Good
0.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
2.7/100
Pollen forecast in Orange
View pollen forecastFrequently Asked Questions
Is air quality bad in Orange right now?
On 15 July 2026, overall air quality in Orange is fair. AQI is the main air quality indicator at 31.2/100. Pollution peaks around 8:00 AM (O3: 31.2/100).
Will air quality be worse tomorrow in Orange?
On 16 July 2026, air quality conditions in Orange will be similar to today, with AQI forecast at fair at 29.9/100. Pollution peaks around 9:00 AM (O3: 29.9/100).
When is air pollution at its worst in Orange?
Conditions in Orange vary noticeably across the seasons. In short, winter rains provide the only real relief from an otherwise persistent haze, whereas summer and early autumn bring the highest ozone levels, and wildfire smoke can spike particulate readings sharply from August through October. Coastal breezes offer some relief compared to inland valley locations that see heavier smog buildup.
Are air quality levels in Orange 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.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app