Illinois Wetter Vorhersage
Illinois weather: 17°C, klar. Stündlich forecast, 14-day outlook, UV, air quality and the best time und visit.
Weekend outlook
☁️ 25° / 15°
Bedeckt · 1% rain · wind 21 km/h
☁️ 26° / 16°
Bedeckt · 4% rain · wind 12 km/h
Best time und go outside today
6 PM – 9 PM · comfort score 9.2/10
The best window und be outside is roughly 6 PM und 9 PM, when temperature, rain chance and wind line up best.
Ist heute ein guter Tag für einen Besuch?
Aktivitätswerte von 0 bis 10 auf Basis von Temperatur, Regen, Wind, Sonne und Sichtweite.
What und pack, what und skip
- Lightweight, light-coloured clothing and a refillable water bottle
- So.glasses, a brimmed hat and SPF 30+
- Layers – the daily swing is 23°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid Januar, Februar and Dezember – historically the least comfortable months here.
Vorhersage für Illinois nach Zeitraum ansehen
Illinois weather – more answers
Explore Illinois
Every topic we hold for this place, and the same topic for the places around it.
Wetter for related places
Frequently asked questions
Where is Illinois?
Illinois is a state in Vereinigte Staaten. Its coordinates are 39.7817, -89.6501. It lies in Nordamerika.
What is the weather like in Illinois jetzt?
It is currently 17°C (62°F) mit klar. Luftfeuchtigkeit is 45% and wind is 5 km/h.
When is the best time und visit Illinois?
August, September and Oktober offer the most comfortable conditions in Illinois, which has a continental climate. Januar, Februar and Dezember are usually the hardest months for outdoor plans.
What time zone is Illinois in?
Illinois observes America/Chicago (UTC-05:00). The Ortszeit is 9:45 PM.
How many people live in Illinois?
Illinois has a population of approximately 12.6 million.
What is the nearest airport und Illinois?
The closest airports are O'Hare International Airport (ORD), 284 km away and Nashville International Airport (BNA), 483 km away.
What are the top things und do in Illinois?
Popular options include Starved Rock State Park, Lake Michigan, Gateway Arch National Park and Indiana Dunes National Park.
What places are in Illinois?
Illinois covers 4 places in this atlas, including Chicago, Starved Rock State Park, Cook County and Lake Michigan.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-states) – coordinates, hierarchy and facts. |
|---|---|
| Vorhersage and observations | Open-Meteo (ECMWF and national models). |
| Luftqualität and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klima averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Wetter Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing – the block is simply not shown. |
Last updated Oktober 5, 2026 at 9:45 PM Ortszeit. Live blocks refresh every 15 minutes; climate averages monthly.
