Chicago i
Coastal town · Illinois

Chicago

Cook County · United States

Now
17°
Local time
03:54 PM
Population
2.66M
GeoNames
Elevation
179 m
Best time to go
Jun–Sep
Go score 87/100
Sea temperature
23°
August
Main airport
MDW
11 km
Time zone
UTC-5
America/Chicago
At a glance

Chicago is the most populous city in the U.S. state of Illinois and in the Midwestern United States. Located on the western shore of Lake Michigan, it is the third-most populous city in the United States and the fifth-most populous city in North America, with a population of 2.74 million at the 2020 census. The Chicago metropolitan area has approximately 9.62 million residents according to the 2020 census and is the third-largest metropolitan statistical area in the country and part of the fourth-largest combined statistical area in the United States, spanning 19 counties in three states and with a population of nearly 10 million.…

Read more — Wikipedia

The best months to visit are June–September.

The sea is warmest in August, at about 23°C (73°F).

Swimming season (water ≥ 21 °C): August.

July is the hottest month, with highs around 29°C (84°F).

January is the coldest month, with lows around -9°C (16°F).

The wettest month is April, with rain on about 13 days.

June is the sunniest month, with about 10.4 hours of sunshine a day.

in October, it is warmer than 27% of places in United States.

Weather

16-day forecast

Chicago weather forecast
17°
Overcast
Feels like
17°
Humidity
89%
Wind
11 km/h SE
Gusts
24 km/h
Cloud cover
100%
Pressure
1012 hPa
UV index
2
Sunrise / Sunset
07:03 / 18:09

Next 48 hours

17° 15 42% 17° 18 49% 19° 21 24% 17° 00 21% 13° 03 10° 06 10° 09 11° 12 11° 15 37% 9° 18 6° 21 4° 00 2° 03 2° 06 4° 09 10° 12
Today
Oct 15
Light rain
19°14°
66% 5.1 mm 22 E
Tomorrow
Oct 16
Drizzle
17°4°
37% 28 NW
Sat
Oct 17
Clear sky
14°1°
7% 21 W
Sun
Oct 18
Clear sky
17°9°
0% 22 SW
Mon
Oct 19
Overcast
19°11°
0% 16 SW
Tue
Oct 20
Overcast
19°13°
0% 11 NE
Wed
Oct 21
Mainly clear
18°13°
2% 11 E
Thu
Oct 22
Mainly clear
22°13°
6% 11 S
Fri
Oct 23
Overcast
23°15°
9% 15 S
Sat
Oct 24
Overcast
23°16°
11% 18 S
Sun
Oct 25
Overcast
21°15°
17% 12 N
Mon
Oct 26
Overcast
17°14°
17% 13 E
Tue
Oct 27
Overcast
21°14°
13% 15 S
Wed
Oct 28
Overcast
21°17°
13% 14 SW
Thu
Oct 29
Light rain
23°16°
16% 5.7 mm 23 SW
Fri
Oct 30
Overcast
16°11°
29% 14 NW
European AQI42Moderate
PM2.59.8
PM109.8
NO₂28.4
O₃24
Pollen

Pollen forecasts are only available in Europe.

Climate

Best time to visit Chicago

Average conditions per month from long-term climate normals (WorldClim 1970–2000, CRU 1961–1990, NOAA OISST 1991–2020).

Best time to goJune–September
-15°-2°10°23°35° 075150 mm Jan · 46 mmFeb · 40 mmMar · 67 mmApr · 96 mmMay · 92 mmJun · 101 mmJul · 94 mmAug · 100 mmSep · 91 mmOct · 70 mmNov · 80 mmDec · 65 mm -1°2°8°14°21°26°29°28°24°17°9°2° -9°-6°-2°4°9°15°18°17°13°6°1°-6° JanFebMarAprMayJunJulAugSepOctNovDec
Average high Average low Sea temperature Rainfall (mm) Best time to go

Month by month

JanFebMarAprMayJunJulAugSepOctNovDec
Average high-1°2°8°14°21°26°29°28°24°17°9°2°
Average low-9°-6°-2°4°9°15°18°17°13°6°1°-6°
Sea temperature3°2°2°4°7°14°21°23°20°15°9°6°
Rainfall (mm)46406796921019410091708065
Rain days121013131110109991112
Sunshine per day (h)4.34.967.29.110.410.39.27.56.13.73.3
Daylight (h)9.510.511.813.314.515.214.913.812.4119.89.1
Humidity (%)737370666567707272707477
Wind (km/h)201921211816141415171919
Go score172021487987878785662513

The go score (0–100) rewards daytime highs of 22–27 °C, mild nights, sunshine and few rainy days.

Tourist density

Chicago: tourist crowds by month

How busy it gets through the year — and the months with good weather and fewer visitors.

Tourist density
High
#4 in United States
International visitors a year
2.08M
2016
Visitors per resident
0.8
Busiest months
September–October
Quietest months
November–March
Sweet spot
May–June
Good weather, fewer crowds
Very quietQuietModerateBusyVery busy ★ Sweet spot

When people plan their trip

Monthly readership of the travel guide — people read up a few weeks before they travel.

Monthly level: estimate from travel-guide readership and climate. Visitors: Mastercard Global Destination Cities Index, 2016. Wikivoyage (Wikimedia Pageviews).

Sea

Chicago: sea water temperature

Water temperature details
Water temperature today
15°C (58°F)
How it feels: cold
Swimming season

August

Average sea temperature by month

21°C 3° Jan 2° Feb 2° Mar 4° Apr 7° May 14° Jun 21° Jul 23° Aug 20° Sep 15° Oct 9° Nov 6° Dec

Nearby beaches & coastal towns

Wikivoyage

Chicago travel guide

What to see, do, eat and where to stay — from the Wikivoyage community.

Chicago is the home of the blues and the truth of jazz, the heart of comedy and the idea of the skyscraper. Here, the age of railroads found its center, and airplanes followed suit. "Stormy, Husky, Brawling / City of Big Shoulders," Chicago is a Heartland boomtown, its ethos defined by urban planner Daniel Burnham's immortal vision: "Make no little plans; they have no magic to stir men's blood." It is one of the world's great cities and the third largest city in the United States, behind only New York City and Los Angeles. As the hub of the Midwest, Chicago is easy to find — its picturesque skyline calls across the waters of Lake Michigan, a first impression that soon reveals world-class museums of art and science, miles of sandy beaches, huge parks and public art, and perhaps the finest downtown collection of modern architecture in the world.

Chicago tourist information. History Chicago was known as a fine place to find a wild onion if you were a member of the Potawatomi tribe, who lived in this area of Illinois before European settlers arrived. It was mostly swamps, prairie and mud long past the original settlement by Jean Baptiste Point du Sable in 1779, the establishment of Fort Dearborn in 1803 and incorporation as a town in 1833. It could be argued that nature never intended for there to be a city here; brutal winters aside, it took civil engineering projects of unprecedented scale to establish working sewers, reverse the flow of the river to keep it out of the city's drinking supply, and stop buildings from sinking back into the swamps — and that was just the first three decades. Chicago became a waypoint between the Great Lakes and the Wild West, where boats came to drop off settlers, and load crops and other goods from the Great Plains and the Rocky Mountains. By 1871, the reckless growth of the city was a sight to behold, full of noise, Gothic lunacy, and bustling commerce. But on October 8, the Great Chicago Fire quickly spread through the city, killing 300 and destroying the oldest part of the city. A journalist blamed it on Mrs. O'Leary and her cow, but years later admitted that he invented the story. The stone Water Tower in the Near North is the most famous surviving structure.

01
Chicago Water Works Visitor Information Center

The city's main visitor information center is on the Magnificent Mile in the historic Pumping Station, across the street from the Water Tower. In addition to extensive free visitor materials, there is a small café.

Hours: Jan 2-Mar 15: Sat Sun 10AM-5PM; Mar 16-May 26: Sun 10AM-5PM, Mon-Sat 9:30AM-6PM; May 27-Sep 2: Sun 10AM-6PM, Mon-Thu 9AM-7PM, Fri Sat… Website
02
Chicago Cultural Center Visitor Information Center

A centrally located place to pick up a host of useful, free materials. The Cultural Center itself makes a good first stop on your tour, with free, worthwhile art and historical exhibits throughout the year.

Hours: Jan 2-Mar 15: Sat Sun 10AM-5PM; Mar 16-May 26: Sun 10AM-5PM, Mon-Sat 9:30AM-6PM; May 27-Sep 2: Sun 10AM-6PM, Mon-Thu 9AM-7PM, Fri Sat… Website

Text from Wikivoyage, CC BY-SA 4.0. Edit or improve it on Wikivoyage. · DE, EN, ES, FR, IT, NL, PL, PT, RU

Wikidata

Landmarks nearby

Mountains, castles, museums, beaches and heritage sites within 25 km — from Wikidata.

Things to do in Chicago
Practical

Chicago: practical information

Plugs, money, emergency numbers, safety and typical prices — everything to know before you go.

Power plugs
AB
Voltage
120 V · 60 Hz
Driving
Drive on the right
Currency

US Dollar

USD · $

Languages
English
Calling code
+1
Emergency numbers
Safety & travel advice
No travel warningsUK Foreign Office · Aug 18, 2026
Read the full advice
Typical prices
  • Meal, casual restaurant$22.00
  • Cappuccino$5.00
  • Beer (0.5 l)$7.50
  • Bottled water (1.5 l)$2.20
  • Taxi, 5 km$16.00
  • Public transport ticket$2.90
  • Mid-range hotel, per night$165

Estimated from United States’s consumer price level (World Bank) — real prices vary by place and season. Prices are about 100% of US levels.

Upcoming public holidays
  • Nov 11Veterans Day
  • Nov 26Thanksgiving Day
  • Dec 25Christmas Day
  • Jan 1New Year's Day
  • Jan 18Martin Luther King, Jr. Day
Sun & daylight
Sunrise
07:03
Sunset
18:09
Daylight today
11 h
Local time in Chicago
Earthquake history

No earthquakes of magnitude 5 or more within 100 km since 1975.

USGS

Map

How to get to Chicago

Nearest airports

Distances

estimate

Hotels

Hotels in Chicago

Hotels and holiday rentals with live nightly prices.

Hotels in Chicago
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We may earn a commission when you book through this map, at no extra cost to you.

GBIF

Wildlife around here

The most-recorded species within 25 km (GBIF), with their seasonality.

Population history

Wikidata · 1833–2025
0741.5K1.48M2.22M2.97M 1850190019502000 1833: 3502010: 2,695,5982014: 2,722,3892017: 2,716,0002020: 2,746,3882025: 2,731,585
FAQ

Frequently asked questions

When is the best time to visit Chicago?

Based on climate normals, the best time to visit Chicago is June–September.

What is the weather like in Chicago in October?

In October, Chicago averages a high of 17°C (63°F) and a low of 6°C (44°F), with 70 mm of rain on about 9 days.

How warm is the sea in Chicago?

The sea is warmest in August (about 23°C (73°F)). Swimming season: August.

What is the rainiest month in Chicago?

April, with rain on about 13 days.

What is the nearest airport to Chicago?

Chicago Midway International Airport (MDW), about 11 km away.

What power plugs are used in United States?

Plug types A, B, 120 V.

What currency is used in United States?

US Dollar (USD).

What is the emergency number in United States?

911.

When is Chicago most crowded?

The busiest months are September–October.

When is Chicago least crowded?

The quietest months are November–March.

When is the best time to visit Chicago without the crowds?

May–June: good weather with fewer visitors than in peak season.

How many tourists visit Chicago?

About 2.08M international visitors a year (2016).

What time zone is Chicago in?

America/Chicago (UTC-5).

What is the population of Chicago?

About 2,664,452.