Worst air pollution Stockton, today and tomorrow
Today (15 July): Air quality in Stockton is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (O3: 37.9/100).
Tomorrow (16 July 2026): Air quality in Stockton is medium. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 10:00 AM (O3: 40.2/100). 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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Stockton's air quality reflects the San Joaquin Valley's enclosed basin position, sharing Fresno and Bakersfield's notorious pollution trap with the addition of the Sacramento-San Joaquin River Delta's agricultural burning contributing regional emissions. The Delta breeze from San Francisco Bay provides afternoon ventilation during summer, offering some relief from the valley inversion that traps vehicle and agricultural emissions throughout most of the year.
Today - 15 July | Pollution peaks at 09:00
AQI:
Fair
37.9/100
PM2.5 (fine particles):
Good
12.5/100
PM10 (coarse particles):
Good
7.9/100
NO2 (nitrogen dioxide):
Good
4.7/100
O3 (ozone):
Fair
37.9/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.8/100
PM1 (ultrafine particles):
Good
6.8/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 10:00
AQI:
Medium
40.2/100
PM2.5 (fine particles):
Good
18.8/100
PM10 (coarse particles):
Good
9.0/100
NO2 (nitrogen dioxide):
Good
10.5/100
O3 (ozone):
Medium
40.2/100
SO2 (sulfur dioxide):
Good
1.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.7/100
PM1 (ultrafine particles):
Good
12.5/100
Pollen forecast in Stockton
View pollen forecastFrequently Asked Questions
Is air quality bad in Stockton right now?
On 15 July 2026, overall air quality in Stockton is fair. AQI is the main air quality indicator at 37.9/100. Pollution peaks around 9:00 AM (O3: 37.9/100).
Will air quality be worse tomorrow in Stockton?
On 16 July 2026, air quality conditions in Stockton will be better than today, with AQI forecast at medium at 40.2/100. Pollution peaks around 10:00 AM (O3: 40.2/100).
When is air pollution at its worst in Stockton?
Seasonal changes shape air quality across Stockton: the rainy winter months generally bring the cleanest air, as storms clear traffic and woodsmoke pollution, but the long dry stretch from midsummer into autumn brings both ozone and wildfire smoke risk. Dry summer conditions with virtually no rain mean pollution and smoke can linger for extended stretches once they arrive.
Are air quality levels in Stockton 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