Worst air pollution Lake Arrowhead, today and tomorrow
Today (15 July): Air quality in Lake Arrowhead is fair. AQI, PM10, and O3 are fair; PM2.5, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (O3: 32.2/100).
Tomorrow (16 July 2026): Air quality in Lake Arrowhead is fair. All pollutants stay as today. Pollution peaks around 9:00 AM (O3: 30.3/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Air quality in Lake Arrowhead is driven mostly by mountain air with basin smog intrusion — ozone drifting up from the Inland Empire can affect afternoon air quality. Overall, Lake Arrowhead 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 - 15 July | Pollution peaks at 08:00
AQI:
Fair
32.2/100
PM2.5 (fine particles):
Good
15.5/100
PM10 (coarse particles):
Fair
21.5/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Fair
32.2/100
SO2 (sulfur dioxide):
Good
0.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.5/100
PM1 (ultrafine particles):
Good
3.2/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 09:00
AQI:
Fair
30.3/100
PM2.5 (fine particles):
Good
13.7/100
PM10 (coarse particles):
Fair
22.8/100
NO2 (nitrogen dioxide):
Good
0.0/100
O3 (ozone):
Fair
30.3/100
SO2 (sulfur dioxide):
Good
0.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.4/100
PM1 (ultrafine particles):
Good
3.8/100
Pollen forecast in Lake Arrowhead
View pollen forecastFrequently Asked Questions
Is air quality bad in Lake Arrowhead right now?
On 15 July 2026, overall air quality in Lake Arrowhead is fair. AQI is the main air quality indicator at 32.2/100. Pollution peaks around 8:00 AM (O3: 32.2/100).
Will air quality be worse tomorrow in Lake Arrowhead?
On 16 July 2026, air quality conditions in Lake Arrowhead will be similar to today, with AQI forecast at fair at 30.3/100. Pollution peaks around 9:00 AM (O3: 30.3/100).
When is air pollution at its worst in Lake Arrowhead?
Air quality across Lake Arrowhead rises and falls with the seasons. Typically, the cleanest air usually comes in winter, when storms periodically flush pollution out of the basin, while summer and early autumn bring the highest ozone levels, and wildfire smoke can spike particulate readings sharply from August through October. Coastal breezes offer some relief compared to inland valley locations that see heavier smog buildup.
Are air quality levels in Lake Arrowhead 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