Worst air pollution Pismo Beach, today and tomorrow
Today (9 August): Air quality in Pismo Beach is fair. PM2.5, SO2, and PM1 are fair; AQI, NO2, and O3 are medium; PM10, CO, and HCHO are good. Pollution peaks around 10:00 AM (O3: 57.7/100).
Tomorrow (10 August 2026): Air quality in Pismo Beach is fair. PM10 increases to fair; O3 increases to fair; all other pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 51.5/100). 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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Pismo Beach's air quality is shaped largely by cool Central Coast marine air; onshore breeze keeps air quality consistently good. Overall, Pismo Beach sees air quality that tracks fairly closely with typical conditions for its wider region. Visitors and residents alike tend to notice the clearest air outside the warmest summer weeks.
Today - 9 August | Pollution peaks at 10:00
AQI:
Medium
57.7/100
PM2.5 (fine particles):
Fair
23.8/100
PM10 (coarse particles):
Good
19.0/100
NO2 (nitrogen dioxide):
Medium
51.0/100
O3 (ozone):
Medium
57.7/100
SO2 (sulfur dioxide):
Fair
24.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.0/100
PM1 (ultrafine particles):
Fair
20.1/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 23:00
AQI:
Medium
51.5/100
PM2.5 (fine particles):
Fair
26.9/100
PM10 (coarse particles):
Fair
25.4/100
NO2 (nitrogen dioxide):
Medium
51.5/100
O3 (ozone):
Fair
38.8/100
SO2 (sulfur dioxide):
Fair
20.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.0/100
PM1 (ultrafine particles):
Fair
22.0/100
Pollen forecast in Pismo Beach
View pollen forecastFrequently Asked Questions
Is air quality bad in Pismo Beach right now?
On 9 August 2026, overall air quality in Pismo Beach is fair. SO2 is the main pollutant at 24.8/100. Pollution peaks around 10:00 AM (O3: 57.7/100).
Will air quality be worse tomorrow in Pismo Beach?
On 10 August 2026, air quality conditions in Pismo Beach will be similar to today, with O3 forecast at fair at 38.8/100. Pollution peaks around 11:00 PM (NO2: 51.5/100).
When is air pollution at its worst in Pismo Beach?
Pismo Beach experiences a distinct seasonal swing in air quality: winter typically brings the cleanest stretch, once occasional rain clears the basin, but summer sunshine and heat drive some of the worst ozone readings in the country. The mountains ringing the basin can trap pollution close to the ground for days when winds are calm.
Are air quality levels in Pismo Beach 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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