Worst air pollution Cayucos, today and tomorrow
Today (15 July): Air quality in Cayucos is very poor. AQI and NO2 are very poor; O3 is poor; PM10 and PM1 are fair; PM2.5 and SO2 are medium; CO and HCHO are good. Pollution peaks around 4:00 PM (NO2: 100/100).
Tomorrow (16 July 2026): Air quality in Cayucos is very poor. All pollutants stay as today. Pollution peaks around 5:00 PM (NO2: 100/100). 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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Air quality in Cayucos is driven mostly by cool Central Coast marine air — onshore breeze keeps air quality consistently good. Day-to-day conditions in Cayucos can still vary with local weather, wind direction, and time of year. As with most US destinations, conditions here are best understood by season rather than by a single yearly average.
Today - 15 July | Pollution peaks at 16:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Medium
42.5/100
PM10 (coarse particles):
Fair
35.8/100
NO2 (nitrogen dioxide):
Very poor
100/100
O3 (ozone):
Poor
65.0/100
SO2 (sulfur dioxide):
Medium
42.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.6/100
PM1 (ultrafine particles):
Fair
37.7/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 17:00
AQI:
Very poor
100/100
PM2.5 (fine particles):
Medium
42.5/100
PM10 (coarse particles):
Fair
34.1/100
NO2 (nitrogen dioxide):
Very poor
100/100
O3 (ozone):
Poor
65.0/100
SO2 (sulfur dioxide):
Medium
42.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.0/100
PM1 (ultrafine particles):
Fair
38.3/100
Pollen forecast in Cayucos
View pollen forecastFrequently Asked Questions
Is air quality bad in Cayucos right now?
On 15 July 2026, overall air quality in Cayucos is very poor. AQI is the main air quality indicator at 100/100. Pollution peaks around 4:00 PM (NO2: 100/100).
Will air quality be worse tomorrow in Cayucos?
On 16 July 2026, air quality conditions in Cayucos will be similar to today, with AQI forecast at very poor at 100/100. Pollution peaks around 5:00 PM (NO2: 100/100).
When is air pollution at its worst in Cayucos?
Air quality across Cayucos rises and falls with the seasons: winter typically brings the cleanest stretch, once occasional rain clears the basin, but summer and early autumn bring the highest ozone levels, and wildfire smoke can spike particulate readings sharply from August through October. Coastal breezes offer some relief compared to inland valley locations that see heavier smog buildup.
Are air quality levels in Cayucos 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