Air Quality in Crystal Lake, United States
Windy
16.6°C · 94.0% humidity
16.6°
Feels 16.6°
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
AQI Forecast
Calibrated
30
8pm
32
19
19
11pm
19
19
31
2am
31
31
31
5am
19
6
6
8am
6
19
19
11am
19
19
19
2pm
19
19
19
5pm
31
31
Station readings
30
32
CAMS model
adj -6
37
25
25
25
25
25
37
37
37
37
25
12
12
12
25
25
25
25
25
25
25
25
37
37
PM2.5 Trend (24h)
23h · 80 stations94.0%
Humidity
98.7 km/h
Wind SSW
1015.4 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
What is the weather forecast for Crystal Lake?
Temperature & Precipitation
PM2.56.98 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for Crystal Lake?
04-09
17.5° 9.9°
04-10
16.6° 6.0°
8.75 mm
04-11
9.1° 2.3°
13.5 mm
04-12
16.1° 8.1°
2.69 mm
04-13
24.2° 16.1°
0.25 mm
04-14
23.3° 14.7°
37.87 mm
04-15
12.7° 3.1°
0.13 mm
Both models agree
Avg diff: 6.8°C
What cities are near Crystal Lake?
Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T23:11 UTC.