Worst air pollution Naglee Park - San Jose, today and tomorrow
Today (9 August): Air quality in Naglee Park 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: 28.1/100).
Tomorrow (10 August 2026): Air quality in Naglee Park is fair. All pollutants stay as today. Pollution peaks around 7:00 AM (O3: 35.5/100). Airmine updates local air quality forecasts four times daily.
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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 - 9 August | Pollution peaks at 09:00
AQI:
Fair
28.1/100
PM2.5 (fine particles):
Good
13.4/100
PM10 (coarse particles):
Good
5.0/100
NO2 (nitrogen dioxide):
Good
3.6/100
O3 (ozone):
Fair
28.1/100
SO2 (sulfur dioxide):
Good
2.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.7/100
PM1 (ultrafine particles):
Good
9.1/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 07:00
AQI:
Fair
35.5/100
PM2.5 (fine particles):
Good
14.9/100
PM10 (coarse particles):
Good
5.9/100
NO2 (nitrogen dioxide):
Good
3.5/100
O3 (ozone):
Fair
35.5/100
SO2 (sulfur dioxide):
Good
2.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.1/100
PM1 (ultrafine particles):
Good
9.9/100
Other Landmarks in San Jose
Sports venues in San Jose
Frequently Asked Questions
Is air quality bad in Naglee Park right now?
On 9 August 2026, overall air quality in Naglee Park is fair. AQI is the main air quality indicator at 28.1/100. Pollution peaks around 9:00 AM (O3: 28.1/100).
Will air quality be worse tomorrow in Naglee Park?
On 10 August 2026, air quality conditions in Naglee Park will be similar to today, with AQI forecast at fair at 35.5/100. Pollution peaks around 7:00 AM (O3: 35.5/100).
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.
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: 10 August 2026 at 02:34 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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