Worst air pollution Big Bear Lake, today and tomorrow
Today (15 July): Air quality in Big Bear Lake is fair. O3 is fair; AQI, PM2.5, and PM10 are medium; NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (PM10: 45.1/100).
Tomorrow (16 July 2026): Air quality in Big Bear Lake is fair. PM2.5 increases to fair; SO2 increases to fair; all other pollutants stay as today. Pollution peaks around 5:00 AM (PM10: 46.5/100). 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 Big Bear Lake is driven mostly by high mountain air with valley smog intrusion — summer smog can drift up from the Los Angeles basin on hot afternoons. Day-to-day conditions in Big Bear Lake can still vary with local weather, wind direction, and time of year. Visitors and residents alike tend to notice the clearest air outside the warmest summer weeks.
Today - 15 July | Pollution peaks at 12:00
AQI:
Medium
45.1/100
PM2.5 (fine particles):
Medium
40.7/100
PM10 (coarse particles):
Medium
45.1/100
NO2 (nitrogen dioxide):
Good
9.4/100
O3 (ozone):
Fair
32.2/100
SO2 (sulfur dioxide):
Good
13.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.5/100
PM1 (ultrafine particles):
Good
9.5/100
Levels show the poorest local air quality during the day
Tomorrow - 16 July | Pollution peaks at 05:00
AQI:
Medium
46.5/100
PM2.5 (fine particles):
Fair
38.1/100
PM10 (coarse particles):
Medium
46.5/100
NO2 (nitrogen dioxide):
Good
14.2/100
O3 (ozone):
Fair
30.3/100
SO2 (sulfur dioxide):
Fair
22.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
1.4/100
PM1 (ultrafine particles):
Good
11.1/100
Pollen forecast in Big Bear Lake
View pollen forecastFrequently Asked Questions
Is air quality bad in Big Bear Lake right now?
On 15 July 2026, overall air quality in Big Bear Lake is fair. O3 is the main pollutant at 32.2/100. Pollution peaks around 12:00 PM (PM10: 45.1/100).
Will air quality be worse tomorrow in Big Bear Lake?
On 16 July 2026, air quality conditions in Big Bear Lake will be similar to today, with PM2.5 forecast at fair at 38.1/100. Pollution peaks around 5:00 AM (PM10: 46.5/100).
When is air pollution at its worst in Big Bear Lake?
Conditions in Big Bear Lake vary noticeably across the seasons, as the shortest stretch of clean air usually falls in the wetter winter months; by contrast, from August into October, wildfire smoke can add sharp particulate spikes on top of the usual summer ozone. Coastal breezes offer some relief compared to inland valley locations that see heavier smog buildup.
Are air quality levels in Big Bear Lake 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