Worst air pollution Rocklin, today and tomorrow
Today (15 July): Air quality in Rocklin 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: 46.9/100).
Tomorrow (16 July 2026): Air quality in Rocklin is medium. All pollutants stay as today. Pollution peaks around 6:00 AM (O3: 48.6/100). 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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Rocklin's air quality reflects the Sacramento Valley foothills position at the Sierra Nevada transition, with vehicle emissions from I-80 the primary local source in this rapidly growing Placer County suburb. The higher elevation provides somewhat better dispersion than the Sacramento Valley floor, while summer wildfire smoke from surrounding Sierra Nevada foothill forests is an increasingly severe seasonal concern and winter tule fog inversions occasionally extend to affect Rocklin.
Today - 15 July | Pollution peaks at 07:00
AQI:
Medium
46.9/100
PM2.5 (fine particles):
Good
7.7/100
PM10 (coarse particles):
Good
5.9/100
NO2 (nitrogen dioxide):
Good
6.3/100
O3 (ozone):
Medium
46.9/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.8/100
PM1 (ultrafine particles):
Good
5.9/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 06:00
AQI:
Medium
48.6/100
PM2.5 (fine particles):
Good
14.3/100
PM10 (coarse particles):
Good
12.7/100
NO2 (nitrogen dioxide):
Good
8.1/100
O3 (ozone):
Medium
48.6/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.8/100
PM1 (ultrafine particles):
Good
10.0/100
Pollen forecast in Rocklin
View pollen forecastFrequently Asked Questions
Is air quality bad in Rocklin right now?
On 15 July 2026, overall air quality in Rocklin is medium. AQI is the main air quality indicator at 46.9/100. Pollution peaks around 7:00 AM (O3: 46.9/100).
Will air quality be worse tomorrow in Rocklin?
On 16 July 2026, air quality conditions in Rocklin will be similar to today, with AQI forecast at medium at 48.6/100. Pollution peaks around 6:00 AM (O3: 48.6/100).
When is air pollution at its worst in Rocklin?
Rocklin's air quality follows a clear seasonal pattern. In short, the cleanest air usually comes in winter, when storms periodically flush pollution out of 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 Rocklin 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