Armour Square 1 Air Quality
Monitoring Station
· Near South Side, United States
37
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading
Nearby Monitoring Stations
GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
Calibrated
37
10pm
41
41
34
1am
32
32
32
4am
32
31
31
7am
31
31
31
10am
31
—
—
1pm
—
—
—
4pm
—
—
—
7pm
—
—
CAMS model
adj +7
34
34
34
27
25
25
25
25
24
24
24
24
24
24
Air Quality Forecast (24h)
PM2.58.9 µg/m³
✓ WHO
Good
Nearby Monitoring Stations
30
Near South Side 2
38
Lower West Side 3
36
Armour Square 2
32
Near West Side 4
46
Near West Side 4
33
Douglas 1
35
Near South Side 1
36
Bridgeport 1
Nearby Cities
Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-06-09T01:03 UTC.