Worst air pollution Morro Bay, today and tomorrow
Today (9 August): Air quality in Morro Bay is medium. AQI, NO2, and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (O3: 57.7/100).
Tomorrow (10 August 2026): Air quality in Morro Bay is fair. PM2.5 increases to fair; PM10 increases to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 40.5/100). 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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Morro Bay's air quality is shaped largely by cool Central Coast marine air; onshore breeze keeps air quality consistently good. Overall, Morro Bay sees air quality that tracks fairly closely with typical conditions for its wider region. Local topography and prevailing winds both play a role in how quickly conditions change.
Today - 9 August | Pollution peaks at 10:00
AQI:
Medium
57.7/100
PM2.5 (fine particles):
Good
18.5/100
PM10 (coarse particles):
Good
14.5/100
NO2 (nitrogen dioxide):
Medium
40.2/100
O3 (ozone):
Medium
57.7/100
SO2 (sulfur dioxide):
Good
14.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.0/100
PM1 (ultrafine particles):
Good
15.4/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 23:00
AQI:
Medium
40.5/100
PM2.5 (fine particles):
Fair
21.1/100
PM10 (coarse particles):
Fair
20.4/100
NO2 (nitrogen dioxide):
Medium
40.5/100
O3 (ozone):
Fair
38.8/100
SO2 (sulfur dioxide):
Good
11.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.0/100
PM1 (ultrafine particles):
Good
17.4/100
Pollen forecast in Morro Bay
View pollen forecastFrequently Asked Questions
Is air quality bad in Morro Bay right now?
On 9 August 2026, overall air quality in Morro Bay is medium. AQI is the main air quality indicator at 57.7/100. Pollution peaks around 10:00 AM (O3: 57.7/100).
Will air quality be worse tomorrow in Morro Bay?
On 10 August 2026, air quality conditions in Morro Bay will be worse than today, with O3 forecast at fair at 38.8/100. Pollution peaks around 11:00 PM (NO2: 40.5/100).
When is air pollution at its worst in Morro Bay?
Morro Bay follows a fairly predictable seasonal air quality pattern — winter typically brings the cleanest stretch, once occasional rain clears the basin, whereas 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 Morro Bay 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: 9 August 2026 at 20:27 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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