Air Quality in Lake Forest, United States
Windy
22.9°C · 46.8% humidity
22.9°
Feels 22.9°
57
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station
Nearby Monitoring Stations
Lake Forest's air quality — share it
AQI Forecast
Calibrated
3
7pm
3
3
57
10pm
42
31
23
1am
17
13
10
4am
8
7
6
7am
2
1
1
10am
1
1
0
1pm
0
0
0
4pm
0
0
Station readings
19h ago
AQI 2
PM2.5 0.4 µg/m³ · 19h ago
CAMS model
adj -51
54
54
54
54
54
54
54
54
54
54
54
54
54
24
24
25
25
25
25
25
25
25
24
24
Air Quality Index Trend
3h · 1 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.
46.8%
Humidity
53.1 km/h
Wind ENE
1019.2 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
15.0 µg/m³
PM10
34.3 µg/m³
050100150200300500
What is the weather forecast for Lake Forest?
Temperature & Precipitation
PM2.5 Trend
3h · 1 stationPM2.515.0 µg/m³
✓ WHO
Moderate
PM1034.3 µg/m³
Good
UV INDEX5.9
High
Station readings (1 station within 25 km)
15.0
Median
15.0
Average
15.0
Low
15.0
High
PM2.5 µg/m³ · Model: 16.35 · Bias: +1.4
What is the 7-day forecast for Lake Forest?
08-03
26.8° 18.9°
5.38 mm
08-04
32.0° 15.6°
0.19 mm
08-05
28.1° 16.6°
4.06 mm
08-06
33.3° 22.6°
0.06 mm
08-07
29.7° 19.6°
0.38 mm
08-08
32.4° 19.5°
4.69 mm
08-09
32.0° 24.2°
0.25 mm
Both models agree
Avg diff: 3.2°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 2026-08-08T03:01 UTC.