Air Quality in Lake Forest, United States
Windy
19.2°C · 45.4% humidity
19.2°
Feels 19.2°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Lake Forest's air quality — share it
AQI Forecast
54
8am
54
54
23
11am
12
18
16
2pm
19
21
21
5pm
22
23
52
8pm
53
33
33
11pm
34
34
54
2am
54
54
54
5am
54
54
Air Quality Index Trend
45h · 145 stnLake Forest's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
45.4%
Humidity
41.0 km/h
Wind NW
1020.2 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.45 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Lake Forest?
Temperature & Precipitation
PM2.5 Trend
45h · 145 stationsPM2.55.45 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX10.9
Extreme
Station readings (2 stations within 25 km)
5.45
Median
5.4
Average
5.3
Low
5.5
High
PM2.5 µg/m³ · Model: 10.85 · Bias: +5.4
What is the 7-day forecast for Lake Forest?
09-05
20.9° 18.9°
09-06
26.2° 14.9°
0.06 mm
09-07
23.5° 19.5°
3.62 mm
09-08
22.0° 14.0°
10.87 mm
09-09
26.4° 18.3°
1.13 mm
09-10
25.1° 17.4°
0.44 mm
09-11
23.5° 16.6°
0.88 mm
Both models agree
Avg diff: 5.4°C
Where are air quality stations near Lake Forest?
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-09-05T16:30 UTC.