Worst air pollution Marysville, today and tomorrow
Today (15 July): Air quality in Marysville is medium. AQI and O3 are medium; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 AM (O3: 51.3/100).
Tomorrow (16 July 2026): Air quality in Marysville is medium. All pollutants stay as today. Pollution peaks around 9:00 AM (O3: 45.0/100). 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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Marysville's air quality reflects the Sacramento Valley's notorious temperature inversion problem, with vehicle emissions from SR-20 and the Yuba-Sutter area's agricultural and rice growing operations contributing elevated agricultural burn PM2.5 during the autumn rice straw burning season. Winter tule fog inversions trap vehicle and agricultural emissions, while the surrounding Sutter Buttes volcanic hills create modest local topographic variation and summer ozone from the Sacramento Valley agricultural corridor is the primary warm-season concern.
Today - 15 July | Pollution peaks at 07:00
AQI:
Medium
51.3/100
PM2.5 (fine particles):
Good
11.7/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Good
8.8/100
O3 (ozone):
Medium
51.3/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.3/100
PM1 (ultrafine particles):
Good
14.5/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 09:00
AQI:
Medium
45.0/100
PM2.5 (fine particles):
Good
9.0/100
PM10 (coarse particles):
Good
3.0/100
NO2 (nitrogen dioxide):
Good
6.1/100
O3 (ozone):
Medium
45.0/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.8/100
PM1 (ultrafine particles):
Good
11.3/100
Pollen forecast in Marysville
View pollen forecastFrequently Asked Questions
Is air quality bad in Marysville right now?
On 15 July 2026, overall air quality in Marysville is medium. AQI is the main air quality indicator at 51.3/100. Pollution peaks around 7:00 AM (O3: 51.3/100).
Will air quality be worse tomorrow in Marysville?
On 16 July 2026, air quality conditions in Marysville will be similar to today, with AQI forecast at medium at 45.0/100. Pollution peaks around 9:00 AM (O3: 45.0/100).
When is air pollution at its worst in Marysville?
Marysville's air quality follows a clear seasonal pattern. Typically, spring is often the freshest stretch, sandwiched between winter rain and summer fire season, while late summer wildfire smoke is the biggest concern, sometimes pushing air quality into unhealthy territory for days at a stretch. Prevailing onshore winds usually keep pollution moving rather than letting it settle.
Are air quality levels in Marysville 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