Worst air pollution Delano, today and tomorrow
Today (9 August): Air quality in Delano is poor. AQI and O3 are poor; NO2 is fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 AM (O3: 66.4/100).
Tomorrow (10 August 2026): Air quality in Delano is fair. AQI improves to medium; PM2.5 increases to fair; NO2 decreases to medium; O3 decreases to medium; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 7:00 AM (O3: 50.9/100). Airmine updates local air quality forecasts four times daily.
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Delano's air quality reflects the San Joaquin Valley's enclosed basin position in Kern County, sharing the valley's notorious California-worst air quality conditions. Vehicle emissions from SR-99 and surrounding grape and cotton farming operations contribute PM2.5, while the Delano Mandaree wind farm corridor provides some intermittent natural ventilation, though persistent valley inversions trap winter emissions and summer ozone from the valley's combined agricultural and vehicle sources produces consistently some of California's highest seasonal readings.
Today - 9 August | Pollution peaks at 06:00
AQI:
Poor
66.4/100
PM2.5 (fine particles):
Good
18.8/100
PM10 (coarse particles):
Good
8.4/100
NO2 (nitrogen dioxide):
Fair
31.8/100
O3 (ozone):
Poor
66.4/100
SO2 (sulfur dioxide):
Good
7.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.8/100
PM1 (ultrafine particles):
Good
17.1/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 07:00
AQI:
Medium
50.9/100
PM2.5 (fine particles):
Fair
22.5/100
PM10 (coarse particles):
Good
11.5/100
NO2 (nitrogen dioxide):
Medium
42.1/100
O3 (ozone):
Medium
50.9/100
SO2 (sulfur dioxide):
Good
9.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.2/100
PM1 (ultrafine particles):
Fair
21.4/100
Pollen forecast in Delano
View pollen forecastFrequently Asked Questions
Is air quality bad in Delano right now?
On 9 August 2026, overall air quality in Delano is poor. AQI is the main air quality indicator at 66.4/100. Pollution peaks around 6:00 AM (O3: 66.4/100).
Will air quality be worse tomorrow in Delano?
On 10 August 2026, air quality conditions in Delano will be better than today, with PM2.5 forecast at fair at 22.5/100. Pollution peaks around 7:00 AM (O3: 50.9/100).
When is air pollution at its worst in Delano?
Delano's air quality has a clear seasonal rhythm. In short, the cleanest air usually comes in winter, when storms periodically flush pollution out of the basin, whereas summer sunshine and heat drive some of the worst ozone readings in the country. The mountains ringing the basin can trap pollution close to the ground for days when winds are calm.
Are air quality levels in Delano 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: 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.
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