Armour Square 1

Monitoring Station · Near South Side, United States
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
38 3pm
34
29
38 6pm
38
38
38 9pm
38
38
51 12am
51
51
51 3am
76
76
— 6am
—
—
— 9am
—
—
— 12pm
—
—
Station readings
38
34
29
CAMS model adj +1
50
50
37
37
37
37
37
37
37
50
50
50
50
75
75

Air Quality Trend (24h)

PM2.57.0 µg/m³ ✓ WHO
Good

Nearby Monitoring Stations

29
Near South Side 2
1.4 km PM2.5: 7.0 µg/m³
30
Lower West Side 3
1.4 km PM2.5: 7.2 µg/m³
33
Armour Square 2
1.6 km PM2.5: 7.9 µg/m³
30
Near West Side 4
1.6 km PM2.5: 7.3 µg/m³
52
Near West Side 4
1.9 km PM2.5: 12.7 µg/m³
30
Douglas 1
2.0 km PM2.5: 7.1 µg/m³
27
Near South Side 1
2.1 km PM2.5: 6.5 µg/m³
29
Bridgeport 1
2.2 km PM2.5: 7.0 µg/m³

Nearby Cities

31 Near South Side 31 Chicago 31 Bridgeport 31 Douglas 31 Lower West Side 31 Chicago Loop 31 McKinley Park 31 Grand Boulevard 30 Near North Side

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-09T18:38 UTC.