Worst air pollution Nob Hill - San Francisco, today and tomorrow
Today (15 July): Air quality in Nob Hill 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 Nob Hill is fair. AQI improves to medium; PM2.5 increases to fair; 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.
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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 Francisco's Nob Hill records moderate urban air quality, elevated above the Financial District and North Beach but subject to traffic emissions from cable car routes and surrounding arterials. The hilltop position provides better ventilation than valley streets below, with Bay breezes frequently reaching this elevated neighbourhood.
Today - 15 July | Pollution peaks at 08:00
AQI:
Fair
39.4/100
PM2.5 (fine particles):
Good
14.8/100
PM10 (coarse particles):
Good
9.1/100
NO2 (nitrogen dioxide):
Good
6.8/100
O3 (ozone):
Fair
39.4/100
SO2 (sulfur dioxide):
Good
2.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.2/100
PM1 (ultrafine particles):
Good
8.1/100
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):
Fair
20.5/100
PM10 (coarse particles):
Good
10.0/100
NO2 (nitrogen dioxide):
Good
14.6/100
O3 (ozone):
Medium
41.0/100
SO2 (sulfur dioxide):
Good
2.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.9/100
PM1 (ultrafine particles):
Good
13.6/100
Other Landmarks in San Francisco
Sports venues in San Francisco
Frequently Asked Questions
Is air quality bad in Nob Hill right now?
On 15 July 2026, overall air quality in Nob Hill 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 Nob Hill?
On 16 July 2026, air quality conditions in Nob Hill will be similar to today, with PM2.5 forecast at fair at 20.5/100. Pollution peaks around 10:00 AM (O3: 41.0/100).
When is air pollution at its worst in Nob Hill?
Conditions at Nob Hill vary noticeably across the seasons. In short, winter storms periodically reset air quality, keeping the cleanest stretch to the rainy months, whereas 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 Nob Hill 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?
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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