Illinois Sää Ennuste
Illinois weather: 14°C, selkeä. Tunneittain forecast, 14-day outlook, UV, air quality and the best time ja visit.
Weekend outlook
☀️ 24° / 9°
Selkeää · 1% rain · wind 11 km/h
☀️ 24° / 10°
Selkeää · 1% rain · wind 16 km/h
Best time ja go outside today
12 PM - 3 PM · comfort score 9.4/10
The best window ja be outside is roughly 12 PM ja 3 PM, when temperature, rain chance and wind line up best.
Is today a good day ja visit?
Activity scores from 0 ja 10 based on temperature, rain, wind, sun and visibility.
What ja pack, what ja skip
- Lightweight, light-coloured clothing and a refillable water bottle
- suglasses, a brimmed hat and SPF 30+
- Layers - the daily swing is 22°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid tammikuu, helmikuu and joulukuu - historically the least comfortable months here.
Katso kohteen Illinois ennuste aikavälin mukaan
Illinois weather - more answers
Explore Illinois
Every topic we hold for this place, and the same topic for the places around it.
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Frequently asked questions
Where is Illinois?
Illinois is a state in Yhdysvallat. Its coordinates are 39.7817, -89.6501. It lies in Pohjois-Amerikka.
What is the weather like in Illinois nyt?
It is currently 14°C (58°F) ja selkeä. Kosteus is 49% and wind is 8 km/h.
When is the best time ja visit Illinois?
elokuu, syyskuu and lokakuu offer the most comfortable conditions in Illinois, which has a continental climate. tammikuu, helmikuu and joulukuu are usually the hardest months for outdoor plans.
What time zone is Illinois in?
Illinois observes America/Chicago (UTC-05:00). The local time is 12:29 AM.
How many people live in Illinois?
Illinois has a population of approximately 12.6 million.
What is the nearest airport ja 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 ja 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. |
|---|---|
| Ennuste and observations | Open-Meteo (ECMWF and national models). |
| Ilmanlaatu and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Ilmasto averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Sää 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 lokakuu 3, 2026 at 12:29 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
