How accurate is the forecast for Grayslake?

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

Grayslake US

July 8, 2026 · 1:21 am

26^°

Clear sky

Feels like 28°C

Humidity: 70%
Wind: 9 km/h SSW
Pressure: 1012 hPa
Cloud: 0%

Today · July 8, 2026

Overcast

30°C · 19°C

Rain: 0 mm · UV: 7.5 · Wind: 14 km/h

Nearby weather

Cities near Grayslake

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

3.2 km Round Lake Park US View forecast 4.4 km Round Lake US View forecast 4.9 km Gages Lake US View forecast 5 km Round Lake Beach US View forecast 7 km Grandwood Park US View forecast 8.5 km Lake Villa US View forecast 9.6 km Mundelein US View forecast 10 km Libertyville US View forecast

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