Aon Center (Chicago) Building

Chicago skyscraper and one of the city's tallest buildings

A solid, rectilinear skyscraper on Chicago's Magnificent Mile housing offices and a ground‑level plaza. Visitors note its modernist profile while exploring nearby Millennium Park, Michigan Avenue shopping and the lakefront.

Main image
Address
200 E. Randolph Street, Chicago, IL 60601, USA
41.885277777778, -87.621388888889

How to Get to Aon Center (Chicago)#

Located in the Loop near Millennium Park and the Chicago River. Accessible via CTA lines (Red, Blue, Brown) to nearby stations (e.g., Washington/Wells or Monroe) and numerous bus routes. Walking distance from Millennium Park.

Tips for Visiting Aon Center (Chicago)#

  • Visit the plaza-side cafés on lower levels to see how the tower reads at human scale.
  • On clear days, the reflective façade is spectacular; midday light creates strong contrasts worth photographing.
  • For parking, use nearby downtown garages-street parking is limited and expensive.

Best Time to Visit Aon Center (Chicago)#

A city-center landmark best seen during clear weather for unobstructed skyline views; summer and early autumn are most comfortable for exploring the area.

Summer (Jun-Aug)
June-August · 20-32°C
Best for rooftop views and strolling the Loop; building materials read strongly in bright light.
Winter (Dec-Feb)
December-February · -10-5°C
Chicago's winter sharpens the building's clean lines against low sun and frequent snow; outdoor viewing is chilly.

Weather & Climate near Aon Center (Chicago)#

Climate

Aon Center (Chicago)'s climate is classified as Hot-Summer Continental - Hot-Summer Continental climate with warm summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -9°C to 29°C. Moderate rainfall (939 mm/year).

Air Quality: AQI 36 Good
Best Time to Visit
JulySeptemberAugust
Temperature & Rainfall
Temperature Range
35°
Warmest Month
-25°
Coldest Month
Monthly Conditions

January

January is the coldest month with highs of -1°C and lows of -9°C. Moderate rainfall (46 mm) and mostly overcast skies.

37 Poor

Comfort

-5°
Feels Like Freezing
-5°C
Temperature
-9° -1°
86%
Humidity
Very Humid

Weather

46 mm
Rainfall
4.9 m/s
Wind
Light Breeze
0.2
UV Index
Low
9.4h daylight

February

February is freezing with highs of 2°C and lows of -6°C. Moderate rainfall (40 mm) and mostly overcast skies.

39 Poor

Comfort

-2°
Feels Like Freezing
-2°C
Temperature
-6°
84%
Humidity
Very Humid

Weather

40 mm
Rainfall
4.7 m/s
Wind
Light Breeze
0.4
UV Index
Low
10.5h daylight

March

March is cold with highs of 7°C and lows of -2°C. Moderate rainfall (66 mm) and partly cloudy skies.

48 Poor

Comfort

Feels Like Cold
C
Temperature
-2°
82%
Humidity
Very Humid

Weather

66 mm
Rainfall
4.9 m/s
Wind
Light Breeze
0.7
UV Index
Moderate
11.8h daylight

April

April is cold with highs of 14°C and lows of 4°C. Regular rainfall (95 mm) and partly cloudy skies.

56 Acceptable

Comfort

Feels Like Cold
C
Temperature
14°
81%
Humidity
Very Humid

Weather

95 mm
Rainfall
5.0 m/s
Wind
Light Breeze
1.1
UV Index
High
13.2h daylight

May

May is cool with highs of 21°C and lows of 9°C. Regular rainfall (91 mm) and partly cloudy skies.

66 Good

Comfort

15°
Feels Like Cool
15°C
Temperature
21°
83%
Humidity
Very Humid

Weather

91 mm
Rainfall
4.4 m/s
Wind
Light Breeze
1.5
UV Index
High
14.4h daylight

June

June is mild with highs of 26°C and lows of 14°C. The wettest month with heavy rain (101 mm) and partly cloudy skies.

78 Very Good

Comfort

20°
Feels Like Mild
20°C
Temperature
14° 26°
81%
Humidity
Very Humid

Weather

101 mm
Rainfall
3.7 m/s
Wind
Light Breeze
1.8
UV Index
Very High
15.0h daylight

July

July is the warmest month with highs of 29°C and lows of 18°C. Regular rainfall (93 mm).

84 Excellent

Comfort

23°
Feels Like Mild
23°C
Temperature
18° 29°
78%
Humidity
Very Humid

Weather

93 mm
Rainfall
3.3 m/s
Wind
Light Breeze
1.9
UV Index
Very High
14.7h daylight

August

August is mild with highs of 27°C and lows of 17°C. Regular rainfall (100 mm) and partly cloudy skies.

80 Excellent

Comfort

22°
Feels Like Mild
22°C
Temperature
17° 27°
77%
Humidity
Very Humid

Weather

100 mm
Rainfall
3.1 m/s
Wind
Light Breeze
1.6
UV Index
Very High
13.7h daylight

September

September is mild with highs of 24°C and lows of 13°C. Regular rainfall (91 mm).

82 Excellent

Comfort

18°
Feels Like Mild
18°C
Temperature
13° 24°
76%
Humidity
Very Humid

Weather

91 mm
Rainfall
3.4 m/s
Wind
Light Breeze
1.2
UV Index
High
12.3h daylight

October

October is cool with highs of 17°C and lows of 6°C. Moderate rainfall (71 mm) and partly cloudy skies.

68 Good

Comfort

12°
Feels Like Cool
12°C
Temperature
17°
77%
Humidity
Very Humid

Weather

71 mm
Rainfall
4.0 m/s
Wind
Light Breeze
0.6
UV Index
Moderate
11.0h daylight

November

November is cold with highs of 9°C and lows of 1°C. Regular rainfall (80 mm) and partly cloudy skies.

56 Acceptable

Comfort

Feels Like Cold
C
Temperature
80%
Humidity
Very Humid

Weather

80 mm
Rainfall
4.6 m/s
Wind
Light Breeze
0.3
UV Index
Low
9.7h daylight

December

December is freezing with highs of 2°C and lows of -6°C. Moderate rainfall (65 mm) and mostly overcast skies.

35 Poor

Comfort

-2°
Feels Like Freezing
-2°C
Temperature
-6°
85%
Humidity
Very Humid

Weather

65 mm
Rainfall
4.6 m/s
Wind
Light Breeze
0.2
UV Index
Low
9.1h daylight

Nearby Attractions to Aon Center (Chicago)#