O'Fallon AQI History

Hourly air quality data for the past 24 hours in O'Fallon, Illinois.

24-Hour Summary

Average AQI

Peak AQI

Best AQI

Hourly AQI Data

TimeAQICategoryPM2.5PM10
04:00 am26Good4.74.9
05:00 am18Good3.23.3
06:00 am16Good2.82.8
07:00 am19Good3.43.4
08:00 am13Good2.32.4
09:00 am24Good4.34.6
10:00 am43Good7.88.4
11:00 am45Good8.18.9
12:00 pm42Good7.68.4
01:00 pm39Good7.18.1
02:00 pm38Good6.87.8
03:00 pm37Good6.67.6
04:00 pm36Good6.47.7
05:00 pm36Good6.47.6
06:00 pm36Good6.47.7
07:00 pm7Good1.22.6
08:00 pm12Good2.13.2
09:00 pm14Good2.63.6
10:00 pm16Good2.93.7
11:00 pm18Good3.23.9
12:00 am19Good3.54.1
01:00 am22Good3.94.4
02:00 am23Good4.24.6
03:00 am26Good4.65.0
04:00 am29Good5.25.7
05:00 am34Good6.16.6
06:00 am39Good7.17.7
07:00 am52Moderate9.510.1
08:00 am53Moderate10.210.8
09:00 am55Moderate11.111.8
10:00 am54Moderate10.911.7
11:00 am54Moderate10.611.5
12:00 pm54Moderate10.712.0
01:00 pm55Moderate11.112.8
02:00 pm55Moderate11.113.1
03:00 pm55Moderate11.213.2
04:00 pm55Moderate11.113.1
05:00 pm54Moderate10.912.9
06:00 pm54Moderate10.612.5
07:00 pm78Moderate23.727.6
08:00 pm75Moderate22.125.4
09:00 pm74Moderate21.224.5
10:00 pm72Moderate20.523.8
11:00 pm70Moderate19.322.5
12:00 am67Moderate17.820.5
01:00 am65Moderate16.519.2
02:00 am63Moderate15.518.2
03:00 am61Moderate14.417.1
04:00 am59Moderate13.516.2
05:00 am58Moderate12.715.4
06:00 am57Moderate12.114.8
07:00 am58Moderate12.916.0
08:00 am58Moderate12.615.8
09:00 am55Moderate11.514.1
10:00 am56Moderate11.914.0
11:00 am56Moderate12.014.1
12:00 pm56Moderate12.014.0
01:00 pm57Moderate12.314.6
02:00 pm56Moderate11.914.2
03:00 pm56Moderate11.814.2
04:00 pm56Moderate12.014.4
05:00 pm55Moderate11.513.9
06:00 pm56Moderate11.614.0
07:00 pm37Good6.67.8
08:00 pm37Good6.78.2
09:00 pm38Good6.98.6
10:00 pm36Good6.48.0
11:00 pm30Good5.46.6
12:00 am22Good4.04.8
01:00 am16Good2.93.3
02:00 am13Good2.42.5
03:00 am13Good2.42.5
04:00 am17Good3.03.2
05:00 am23Good4.14.2
06:00 am27Good4.95.1
07:00 am8Good1.51.5
08:00 am10Good1.81.8
09:00 am11Good2.02.1
10:00 am14Good2.52.7
11:00 am18Good3.23.5
12:00 pm21Good3.84.3
01:00 pm24Good4.44.9
02:00 pm26Good4.65.0
03:00 pm24Good4.44.8
04:00 pm24Good4.45.0
05:00 pm26Good4.75.5
06:00 pm27Good4.96.0
07:00 pm1Good0.20.2
08:00 pm3Good0.60.6
09:00 pm8Good1.51.5
10:00 pm9Good1.61.6
11:00 pm8Good1.51.5
12:00 am8Good1.51.5
01:00 am9Good1.61.6
02:00 am10Good1.81.8
03:00 am11Good2.02.0
04:00 am11Good2.02.1
05:00 am12Good2.12.2
06:00 am14Good2.52.6
07:00 am48Good8.611.0
08:00 am49Good8.811.0
09:00 am48Good8.710.4
10:00 am46Good8.29.5
11:00 am47Good8.49.8
12:00 pm51Moderate9.310.8
01:00 pm53Moderate10.211.9
02:00 pm52Moderate9.811.4
03:00 pm53Moderate10.011.7
04:00 pm53Moderate10.312.1
05:00 pm54Moderate10.913.1
06:00 pm53Moderate10.412.8
07:00 pm41Good7.37.8
08:00 pm44Good8.08.6
09:00 pm47Good8.59.2
10:00 pm47Good8.49.1
11:00 pm42Good7.58.3
12:00 am33Good5.96.6
01:00 am26Good4.75.2
02:00 am26Good4.65.0
03:00 am31Good5.66.0
04:00 am38Good6.87.3
05:00 am42Good7.68.2
06:00 am44Good8.08.6
07:00 am45Good8.19.0
08:00 am46Good8.29.1
09:00 am46Good8.29.1
10:00 am41Good7.48.2
11:00 am37Good6.77.3
12:00 pm37Good6.77.5
01:00 pm40Good7.28.0
02:00 pm43Good7.78.4
03:00 pm46Good8.28.9
04:00 pm47Good8.59.2
05:00 pm48Good8.79.3
06:00 pm48Good8.79.2
07:00 pm3Good0.60.7
08:00 pm8Good1.41.5
09:00 pm9Good1.61.8
10:00 pm8Good1.41.6
11:00 pm7Good1.21.3
12:00 am6Good1.11.3
01:00 am7Good1.31.4
02:00 am8Good1.51.7
03:00 am11Good1.92.1
04:00 am13Good2.42.5
05:00 am16Good2.82.9
06:00 am18Good3.33.5
07:00 am7Good1.21.2
08:00 am14Good2.52.6
09:00 am25Good4.54.9
10:00 am31Good5.66.1
11:00 am23Good4.24.5
12:00 pm17Good3.03.3
01:00 pm16Good2.93.2
02:00 pm16Good2.93.2
03:00 pm16Good2.93.2
04:00 pm16Good2.83.2
05:00 pm15Good2.73.1
06:00 pm16Good2.83.2
07:00 pm20Good3.64.0
08:00 pm28Good5.05.4
09:00 pm31Good5.55.8
10:00 pm24Good4.34.6
11:00 pm22Good4.04.2
12:00 am24Good4.34.6
01:00 am26Good4.75.0
02:00 am28Good5.15.5
03:00 am31Good5.55.9
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