Armour Square 1 Air Quality

Monitoring Station · Near South Side, United States
17
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
20 1am
17
22
22 4am
22
21
21 7am
21
21
21 10am
21
21
22 1pm
22
22
— 4pm
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— 7pm
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— 10pm
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Station readings
20
17
CAMS model adj -3
27
25
25
25
25
24
24
24
24
24
24
24
25
25
25

Air Quality Forecast (24h)

PM2.54.1 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

14
Near South Side 2
1.4 km PM2.5: 3.4 µg/m³
19
Lower West Side 3
1.4 km PM2.5: 4.6 µg/m³
16
Armour Square 2
1.6 km PM2.5: 3.8 µg/m³
17
Near West Side 4
1.6 km PM2.5: 4.1 µg/m³
23
Near West Side 4
1.9 km PM2.5: 5.5 µg/m³
15
Douglas 1
2.0 km PM2.5: 3.7 µg/m³
16
Near South Side 1
2.1 km PM2.5: 3.8 µg/m³
18
Bridgeport 1
2.2 km PM2.5: 4.4 µg/m³

Nearby Cities

16 Near South Side 18 Chicago 18 Bridgeport 16 Douglas 18 Lower West Side 18 Chicago Loop 18 McKinley Park 15 Grand Boulevard 20 Near North Side

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-06-09T04:24 UTC.