Worst air pollution Monterey, today and tomorrow
Today (15 July): Air quality in Monterey is poor. AQI and O3 are poor; PM2.5 is fair; NO2 is medium; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 9:00 AM (O3: 60.3/100).
Tomorrow (16 July 2026): Air quality in Monterey is fair. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 9:00 AM (O3: 44.2/100). 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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Monterey experiences air quality conditions shaped chiefly by cool marine air, and persistent sea breeze keeps air quality consistently good. Most days bring generally favorable conditions here, with occasional exceptions tied to shifting weather patterns. Visitors and residents alike tend to notice the clearest air outside the warmest summer weeks.
Today - 15 July | Pollution peaks at 09:00
AQI:
Poor
60.3/100
PM2.5 (fine particles):
Fair
25.6/100
PM10 (coarse particles):
Good
14.0/100
NO2 (nitrogen dioxide):
Medium
43.6/100
O3 (ozone):
Poor
60.3/100
SO2 (sulfur dioxide):
Good
11.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.2/100
PM1 (ultrafine particles):
Good
18.0/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 09:00
AQI:
Medium
44.2/100
PM2.5 (fine particles):
Fair
26.9/100
PM10 (coarse particles):
Good
14.1/100
NO2 (nitrogen dioxide):
Medium
42.8/100
O3 (ozone):
Medium
44.2/100
SO2 (sulfur dioxide):
Good
9.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.5/100
PM1 (ultrafine particles):
Good
19.1/100
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Frequently Asked Questions
Is air quality bad in Monterey right now?
On 15 July 2026, overall air quality in Monterey is poor. AQI is the main air quality indicator at 60.3/100. Pollution peaks around 9:00 AM (O3: 60.3/100).
Will air quality be worse tomorrow in Monterey?
On 16 July 2026, air quality conditions in Monterey will be better than today, with PM2.5 forecast at fair at 26.9/100. Pollution peaks around 9:00 AM (O3: 44.2/100).
When is air pollution at its worst in Monterey?
Monterey sees air quality change through the year — winter rains provide the only real relief from an otherwise persistent haze, whereas hot, sunny summer conditions drive persistent ozone problems, compounded by wildfire smoke risk into early autumn. Coastal breezes offer some relief compared to inland valley locations that see heavier smog buildup.
Are air quality levels in Monterey 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