Air Quality in Chicago Loop, United States

Partly Cloudy
25.1°C · 51.2% humidity
25.1°
Feels 25.1°
55
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
266 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
16 1pm
16
16
55 4pm
44
36
29 7pm
26
25
23 10pm
22
19
20 1am
46
58
75 4am
75
74
74 7am
57
74
75 10am
137
137
Station readings
29
18
8
CAMS model adj -9
25
25
25
25
25
25
24
25
27
27
27
25
27
54
66
83
83
83
83
66
83
84
146
146
AD 728×90

Air Quality Index Trend

44h · 1 stn

Chicago Loop's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

51.2%
Humidity
36.2 km/h
Wind NE
1014.3 hPa
Pressure
10.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
55
13.97 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Chicago Loop?

Temperature & Precipitation

PM2.5 Trend

44h · 1 station
PM2.513.97 µg/m³ ✓ WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX10.9
Extreme
AD 300×250
Station readings (266 stations within 25 km)
13.97
Median
13.9
Average
3.22
Low
28.83
High
PM2.5 µg/m³ · Model: 9.75 · Bias: -4.2

What is the 7-day forecast for Chicago Loop?

07-21
28.2° 23.4°
0.81 mm
07-22
26.7° 21.3°
07-23
25.1° 18.5°
3.56 mm
07-24
28.1° 19.9°
07-25
23.8° 19.7°
0.13 mm
07-26
29.2° 22.9°
3.13 mm
07-27
27.2° 21.5°
1.06 mm
Both models agree Avg diff: 3.6°C

Where are air quality stations near Chicago Loop?

53
Loop 1
0.5 km PM2.5: 13.0 µg/m³
54
Near North Side 4
1.3 km PM2.5: 13.3 µg/m³
53
Loop 2
1.3 km PM2.5: 13.1 µg/m³
53
Near North Side 3
1.7 km PM2.5: 13.0 µg/m³
52
Near West Side 3
1.8 km PM2.5: 12.8 µg/m³
53
Near West Side 4
1.9 km PM2.5: 12.9 µg/m³
52
West Town 3
2.1 km PM2.5: 12.6 µg/m³
52
Near South Side 1
2.1 km PM2.5: 12.7 µg/m³
57
Near West Side 4
2.6 km PM2.5: 15.1 µg/m³
51
Near North Side 2
2.6 km PM2.5: 12.2 µg/m³

What cities are near Chicago Loop?

54 Near North Side 57 Near South Side 55 West Town 58 Chicago 56 Lower West Side 42 Lincoln Park 56 Bridgeport 56 Douglas 54 East Garfield Park 56 McKinley Park
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T21:43 UTC.