Worst air pollution SoFA District - San Jose, today and tomorrow
Today (15 July): Air quality in SoFA District is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (O3: 45.8/100).
Tomorrow (16 July 2026): Air quality in SoFA District is fair. PM2.5 increases to fair; NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 9:00 AM (O3: 44.7/100). 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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San Jose's SoFA District air quality reflects the South of First Area arts and nightlife corridor, with vehicle traffic on 1st Street and the surrounding concentrated entertainment and residential character contributing local sources. The Bay Delta breeze provides afternoon ventilation, while the neighbourhood's walkable arts character and the consistent bay breezes generally maintain moderate San Jose downtown metropolitan readings throughout most of the year.
Today - 15 July | Pollution peaks at 09:00
AQI:
Medium
45.8/100
PM2.5 (fine particles):
Good
16.5/100
PM10 (coarse particles):
Good
10.4/100
NO2 (nitrogen dioxide):
Good
12.4/100
O3 (ozone):
Medium
45.8/100
SO2 (sulfur dioxide):
Good
3.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.6/100
PM1 (ultrafine particles):
Good
10.0/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 09:00
AQI:
Medium
44.7/100
PM2.5 (fine particles):
Fair
21.3/100
PM10 (coarse particles):
Good
10.7/100
NO2 (nitrogen dioxide):
Fair
20.3/100
O3 (ozone):
Medium
44.7/100
SO2 (sulfur dioxide):
Good
3.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.2/100
PM1 (ultrafine particles):
Good
13.7/100
Other Landmarks in San Jose
Sports venues in San Jose
Frequently Asked Questions
Is air quality bad in SoFA District right now?
On 15 July 2026, overall air quality in SoFA District is medium. AQI is the main air quality indicator at 45.8/100. Pollution peaks around 9:00 AM (O3: 45.8/100).
Will air quality be worse tomorrow in SoFA District?
On 16 July 2026, air quality conditions in SoFA District will be worse than today, with PM2.5 forecast at fair at 21.3/100. Pollution peaks around 9:00 AM (O3: 44.7/100).
When is air pollution at its worst in SoFA District?
SoFA District follows San Jose's typical seasonal air quality pattern — late winter and spring tend to have the cleanest conditions, once winter rains settle in, whereas heat and dryness combine from July onward to raise both ozone and 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 SoFA District 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