Worst air pollution Mendocino, today and tomorrow
Today (30 August): Air quality in Mendocino is moderate. AQI and NO2 are moderate; PM10 and O3 are fair; PM2.5, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 PM (NO2: 49.6/100).
Tomorrow (31 August 2026): Air quality in Mendocino is moderate. PM2.5 increases to fair; all other pollutants stay as today. Pollution peaks around 12:00 AM (NO2: 44.3/100). 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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Mendocino's air quality is shaped largely by cool coastal fog; marine fog and onshore breeze keep pollutant levels low year-round. These factors combine to give Mendocino a fairly typical seasonal air quality pattern for this part of the country. Visitors and residents alike tend to notice the clearest air outside the warmest summer weeks.
Today - 30 August | Pollution peaks at 22:00
AQI:
Moderate
49.6/100
PM2.5 (fine particles):
Good
19.8/100
PM10 (coarse particles):
Fair
20.9/100
NO2 (nitrogen dioxide):
Moderate
49.6/100
O3 (ozone):
Fair
38.3/100
SO2 (sulfur dioxide):
Good
11.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.2/100
PM1 (ultrafine particles):
Good
13.7/100
Levels show the poorest local air quality during the day
Tomorrow - 31 August | Pollution peaks at 00:00
AQI:
Moderate
44.3/100
PM2.5 (fine particles):
Fair
27.9/100
PM10 (coarse particles):
Fair
25.7/100
NO2 (nitrogen dioxide):
Moderate
44.3/100
O3 (ozone):
Fair
30.3/100
SO2 (sulfur dioxide):
Good
9.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.6/100
PM1 (ultrafine particles):
Good
14.4/100
Pollen forecast in Mendocino
View pollen forecastFrequently Asked Questions
Is air quality bad in Mendocino right now?
On 30 August 2026, overall air quality in Mendocino is moderate. AQI is the main air quality indicator at 49.6/100. Pollution peaks around 10:00 PM (NO2: 49.6/100).
Will air quality be worse tomorrow in Mendocino?
On 31 August 2026, air quality conditions in Mendocino will be similar to today, with AQI forecast at moderate at 44.3/100. Pollution peaks around 12:00 AM (NO2: 44.3/100).
When is air pollution at its worst in Mendocino?
Seasonal changes shape air quality across Mendocino: winter typically brings the cleanest stretch, once occasional rain clears the basin, but 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 Mendocino 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: 30 August 2026 at 14:32 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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