Air Quality in Lake Forest, United States
Windy
24.2°C · 65.5% humidity
24.2°
Feels 24.2°
12
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Lake Forest's air quality — share it
AQI Forecast
Calibrated
5
12pm
4
4
12
3pm
10
8
7
6pm
6
7
6
9pm
6
6
5
12am
14
46
63
3am
64
64
63
6am
63
46
64
9am
126
126
Station readings
8
4
CAMS model
adj -20
25
24
24
24
24
24
24
24
25
25
25
25
25
34
66
83
84
84
83
83
66
84
146
146
Air Quality Index Trend
43h · 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.
65.5%
Humidity
48.9 km/h
Wind ENE
1015.4 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
2.97 µg/m³
PM10▲
20.55 µg/m³
050100150200300500
What is the weather forecast for Lake Forest?
Temperature & Precipitation
PM2.5 Trend
43h · 1 stationPM2.52.97 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX17.4
Extreme
Station readings (2 stations within 25 km)
2.97
Median
6.48
Average
1.47
Low
11.5
High
PM2.5 µg/m³ · Model: 9.65 · Bias: +6.7
What is the 7-day forecast for Lake Forest?
07-21
25.5° 22.5°
0.88 mm
07-22
23.5° 21.3°
07-23
23.9° 18.8°
4.25 mm
07-24
25.5° 20.3°
07-25
22.2° 19.1°
0.19 mm
07-26
25.6° 22.7°
2.31 mm
07-27
25.6° 21.2°
4.25 mm
Both models agree
Avg diff: 3.6°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 2026-07-21T20:10 UTC.