Worst air pollution Little Italy San Diego - San Diego, today and tomorrow
Today (15 July): Air quality in Little Italy San Diego is fair. AQI, PM2.5, PM10, and O3 are fair; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (PM10: 37.8/100).
Tomorrow (16 July 2026): Air quality in Little Italy San Diego is fair. PM2.5 decreases to good; all other pollutants stay as today. Pollution peaks around 8:00 AM (O3: 28.0/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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San Diego's Little Italy air quality reflects the downtown waterfront neighbourhood, with vehicle traffic on India Street and the San Diego Bay's maritime activity contributing local sources. The bay's consistent maritime ventilation provides reliable background air quality management, while the neighbourhood's compact walkable character and the outstanding Pacific and bay coastal exposure generally maintain Little Italy among San Diego's more moderately ventilated downtown neighbourhoods throughout most of the year.
Today - 15 July | Pollution peaks at 08:00
AQI:
Fair
37.8/100
PM2.5 (fine particles):
Fair
22.5/100
PM10 (coarse particles):
Fair
37.8/100
NO2 (nitrogen dioxide):
Good
1.4/100
O3 (ozone):
Fair
26.9/100
SO2 (sulfur dioxide):
Good
2.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.0/100
PM1 (ultrafine particles):
Good
3.8/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 08:00
AQI:
Fair
28.0/100
PM2.5 (fine particles):
Good
15.4/100
PM10 (coarse particles):
Fair
26.8/100
NO2 (nitrogen dioxide):
Good
1.9/100
O3 (ozone):
Fair
28.0/100
SO2 (sulfur dioxide):
Good
3.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
0.9/100
PM1 (ultrafine particles):
Good
3.1/100
Other Landmarks in San Diego
Sports venues in San Diego
Frequently Asked Questions
Is air quality bad in Little Italy San Diego right now?
On 15 July 2026, overall air quality in Little Italy San Diego is fair. AQI is the main air quality indicator at 37.8/100. Pollution peaks around 8:00 AM (PM10: 37.8/100).
Will air quality be worse tomorrow in Little Italy San Diego?
On 16 July 2026, air quality conditions in Little Italy San Diego will be similar to today, with AQI forecast at fair at 28.0/100. Pollution peaks around 8:00 AM (O3: 28.0/100).
When is air pollution at its worst in Little Italy San Diego?
Like the rest of San Diego, Little Italy San Diego sees air quality change through the year. Typically, winter typically brings the cleanest stretch, once occasional rain clears the basin, while from August into October, wildfire smoke can add sharp particulate spikes on top of the usual summer ozone. The mountains ringing the basin can trap pollution close to the ground for days when winds are calm.
Are air quality levels in Little Italy San Diego 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