Worst air pollution Mountain View, today and tomorrow
Today (15 July): Air quality in Mountain View is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (O3: 39.4/100).
Tomorrow (16 July 2026): Air quality in Mountain View is medium. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 10:00 AM (O3: 41.0/100). 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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Mountain View's air quality reflects the Santa Clara Valley's partial topographic enclosure in Silicon Valley, with vehicle emissions from US-101 and the surrounding Google and technology campus contributing local sources. Bay Delta breezes provide afternoon ventilation, while the Diablo Range and Santa Cruz Mountains create valley topography, and summer wildfire smoke from surrounding Bay Area hills is an increasingly frequent and severe seasonal concern.
Today - 15 July | Pollution peaks at 08:00
AQI:
Fair
39.4/100
PM2.5 (fine particles):
Good
13.7/100
PM10 (coarse particles):
Good
8.4/100
NO2 (nitrogen dioxide):
Good
4.6/100
O3 (ozone):
Fair
39.4/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.2/100
PM1 (ultrafine particles):
Good
7.5/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 10:00
AQI:
Medium
41.0/100
PM2.5 (fine particles):
Good
19.0/100
PM10 (coarse particles):
Good
9.3/100
NO2 (nitrogen dioxide):
Good
9.8/100
O3 (ozone):
Medium
41.0/100
SO2 (sulfur dioxide):
Good
2.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
12.6/100
Pollen forecast in Mountain View
View pollen forecastFrequently Asked Questions
Is air quality bad in Mountain View right now?
On 15 July 2026, overall air quality in Mountain View is fair. AQI is the main air quality indicator at 39.4/100. Pollution peaks around 8:00 AM (O3: 39.4/100).
Will air quality be worse tomorrow in Mountain View?
On 16 July 2026, air quality conditions in Mountain View will be better than today, with AQI forecast at medium at 41.0/100. Pollution peaks around 10:00 AM (O3: 41.0/100).
When is air pollution at its worst in Mountain View?
Mountain View sees air quality change through the year: the cleanest air usually comes in winter, when storms periodically flush pollution out of the basin, but summer and early autumn bring the highest ozone levels, and wildfire smoke can spike particulate readings sharply from August through October. The mountains ringing the basin can trap pollution close to the ground for days when winds are calm.
Are air quality levels in Mountain View 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