Air Quality in Lake Forest, United States
Windy
8.4°C · 72.7% humidity
8.4°
Feels 1.5°
48
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations
Nearby Monitoring Stations
Lake Forest's air quality — share it
AQI Forecast
Calibrated
9
4pm
9
9
48
7pm
37
30
24
10pm
20
17
14
1am
13
12
11
4am
10
10
10
7am
10
9
9
10am
9
9
11
1pm
11
9
Station readings
16h ago
AQI 6
PM2.5 1.4 µg/m³ · 16h ago
CAMS model
adj -16
25
25
25
24
24
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
27
27
25
Air Quality Index Trend
27h · 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. Current PM2.5 concentration in Lake Forest is 2.3× the WHO annual guideline of 5 µg/m³.
72.7%
Humidity
102.0 km/h
Wind NNE
1028.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
11.43 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Lake Forest?
Temperature & Precipitation
PM2.5 Trend
27h · 1 stationPM2.511.43 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (3 stations within 25 km)
11.43
Median
10.4
Average
6.5
Low
17.3
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -5.5
What is the 7-day forecast for Lake Forest?
05-29
24.6° 7.8°
05-30
20.5° 10.9°
0.13 mm
05-31
19.2° 13.8°
0.13 mm
06-01
25.5° 13.2°
0.31 mm
06-02
19.7° 13.1°
6.0 mm
06-03
26.1° 18.0°
06-04
16.4° 12.2°
Both models agree
Avg diff: 4.7°C
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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 2026-05-29T00:12 UTC.