Worst air pollution Naglee Park - San Jose, today and tomorrow
Today (15 July): Air quality in Naglee Park 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 Naglee Park is fair. PM2.5 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
Use our Strava plugin to check your own exposure.
San Jose's Naglee Park air quality reflects the historic residential neighbourhood adjacent to San Jose State University, with vehicle traffic on the surrounding residential corridors contributing modest local sources. The neighbourhood's mature tree canopy provides natural filtration, while the Bay Delta breeze provides afternoon ventilation and Naglee Park generally maintains among San Jose's more pleasant inner residential environments throughout most of the year.
Today - 15 July | Pollution peaks at 09:00
AQI:
Medium
45.8/100
PM2.5 (fine particles):
Good
15.7/100
PM10 (coarse particles):
Good
9.8/100
NO2 (nitrogen dioxide):
Good
10.3/100
O3 (ozone):
Medium
45.8/100
SO2 (sulfur dioxide):
Good
3.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.6/100
PM1 (ultrafine particles):
Good
9.6/100
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
20.4/100
PM10 (coarse particles):
Good
10.2/100
NO2 (nitrogen dioxide):
Good
17.0/100
O3 (ozone):
Medium
44.7/100
SO2 (sulfur dioxide):
Good
3.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.2/100
PM1 (ultrafine particles):
Good
13.0/100
Other Landmarks in San Jose
Sports venues in San Jose
Frequently Asked Questions
Is air quality bad in Naglee Park right now?
On 15 July 2026, overall air quality in Naglee Park 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 Naglee Park?
On 16 July 2026, air quality conditions in Naglee Park will be worse than today, with PM2.5 forecast at fair at 20.4/100. Pollution peaks around 9:00 AM (O3: 44.7/100).
When is air pollution at its worst in Naglee Park?
Conditions at Naglee Park vary noticeably across the seasons, as winter storms periodically reset air quality, keeping the cleanest stretch to the rainy months; by contrast, 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 Naglee Park 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.
Want to see air quality forecasts for other cities in United States?
Check air quality in other popular cities:
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