How accurate is the forecast for Crystal Lake?

Forecasts are pulled from leading meteorological models and refreshed automatically every 30 minutes. Short-range accuracy (next 24 hours) is typically within 1–2°C and 80–90% for precipitation.

How often is the data updated?

Current conditions and the hourly outlook refresh every 30 minutes; daily forecasts every hour.

What does the air-quality (AQI) value mean?

We display the European AQI on a scale from Good (0–20) to Extremely poor (>100), blending PM2.5, PM10, NO₂ and O₃.

Clima Map

Crystal Lake US

July 12, 2026 · 1:25 am

26^°

Clear sky

Feels like 28°C

Humidity: 57%
Wind: 5 km/h ESE
Pressure: 1020 hPa
Cloud: 0%

Nearby weather

Cities near Crystal Lake

Compare weather conditions in surrounding cities and open any local forecast instantly.

6.7 km Lake in the Hills US View forecast 8.6 km Algonquin US View forecast 10.9 km Island Lake US View forecast 11 km McHenry US View forecast 12.3 km Huntley US View forecast 13.7 km Lakemoor US View forecast 14.2 km Carpentersville US View forecast 14.7 km Wauconda US View forecast

Weather notice Forecasts are for general planning. During severe weather, follow official alerts and local authority instructions.