Richard-Toll AQI History

Hourly air quality data for the past 24 hours in Richard-Toll, Saint-Louis.

24-Hour Summary

Average AQI

Peak AQI

Best AQI

Hourly AQI Data

TimeAQICategoryPM2.5PM10
08:00 am105Unhealthy for Sensitive Groups37.191.3
09:00 am107Unhealthy for Sensitive Groups38.088.2
10:00 am116Unhealthy for Sensitive Groups41.4113.6
11:00 am116Unhealthy for Sensitive Groups41.6122.9
12:00 pm116Unhealthy for Sensitive Groups41.4116.6
01:00 pm117Unhealthy for Sensitive Groups41.9132.7
02:00 pm119Unhealthy for Sensitive Groups42.7170.4
03:00 pm115Unhealthy for Sensitive Groups41.0171.8
04:00 pm113Unhealthy for Sensitive Groups40.5166.2
05:00 pm115Unhealthy for Sensitive Groups41.3161.6
06:00 pm116Unhealthy for Sensitive Groups41.4143.0
07:00 pm117Unhealthy for Sensitive Groups41.8137.8
08:00 pm122Unhealthy for Sensitive Groups44.0156.5
09:00 pm124Unhealthy for Sensitive Groups44.8149.9
10:00 pm121Unhealthy for Sensitive Groups43.5121.1
11:00 pm114Unhealthy for Sensitive Groups40.986.1
12:00 am124Unhealthy for Sensitive Groups44.992.9
01:00 am127Unhealthy for Sensitive Groups46.297.3
02:00 am132Unhealthy for Sensitive Groups48.0100.8
03:00 am134Unhealthy for Sensitive Groups48.9101.3
04:00 am134Unhealthy for Sensitive Groups48.797.6
05:00 am133Unhealthy for Sensitive Groups48.392.7
06:00 am133Unhealthy for Sensitive Groups48.390.3
07:00 am130Unhealthy for Sensitive Groups47.386.6
08:00 am131Unhealthy for Sensitive Groups47.785.4
09:00 am141Unhealthy for Sensitive Groups51.7102.2
10:00 am148Unhealthy for Sensitive Groups54.4120.1
11:00 am148Unhealthy for Sensitive Groups54.7136.4
12:00 pm152Unhealthy57.3157.4
01:00 pm131Unhealthy for Sensitive Groups47.5130.9
02:00 pm101Unhealthy for Sensitive Groups35.6105.9
03:00 pm85Moderate27.295.2
04:00 pm79Moderate24.098.5
05:00 pm79Moderate23.9104.3
06:00 pm80Moderate24.7102.0
07:00 pm82Moderate25.899.7
08:00 pm84Moderate27.0108.7
09:00 pm87Moderate28.5110.8
10:00 pm95Moderate32.8100.6
11:00 pm117Unhealthy for Sensitive Groups42.090.1
12:00 am139Unhealthy for Sensitive Groups50.8105.5
01:00 am154Unhealthy59.4120.6
02:00 am159Unhealthy66.6133.2
03:00 am164Unhealthy73.8148.1
04:00 am169Unhealthy80.8163.9
05:00 am172Unhealthy85.9177.4
06:00 am175Unhealthy89.2187.7
07:00 am176Unhealthy91.3195.1
08:00 am177Unhealthy92.0195.6
09:00 am177Unhealthy92.4213.3
10:00 am172Unhealthy85.2205.8
11:00 am161Unhealthy69.8177.0
12:00 pm121Unhealthy for Sensitive Groups43.5116.6
01:00 pm95Moderate32.592.0
02:00 pm70Moderate19.568.0
03:00 pm66Moderate17.476.6
04:00 pm70Moderate18.393.6
05:00 pm76Moderate20.1106.4
06:00 pm73Moderate20.599.9
07:00 pm72Moderate20.591.7
08:00 pm78Moderate23.685.2
09:00 pm89Moderate29.783.8
10:00 pm114Unhealthy for Sensitive Groups40.789.2
11:00 pm152Unhealthy56.7109.9
12:00 am184Unhealthy102.2197.9
01:00 am189Unhealthy109.2218.9
02:00 am187Unhealthy106.9215.6
03:00 am182Unhealthy99.2198.8
04:00 am174Unhealthy88.7178.3
05:00 am168Unhealthy79.6167.6
06:00 am167Unhealthy78.2170.4
07:00 am167Unhealthy78.9157.4
08:00 am168Unhealthy79.4136.0
09:00 am171Unhealthy84.5162.5
10:00 am171Unhealthy84.5177.4
11:00 am169Unhealthy80.8175.6
12:00 pm158Unhealthy65.7153.7
01:00 pm152Unhealthy57.6139.7
02:00 pm137Unhealthy for Sensitive Groups50.3128.5
03:00 pm125Unhealthy for Sensitive Groups45.3120.6
04:00 pm118Unhealthy for Sensitive Groups42.3115.9
05:00 pm113Unhealthy for Sensitive Groups40.5111.5
06:00 pm114Unhealthy for Sensitive Groups40.6106.9
07:00 pm127Unhealthy for Sensitive Groups45.9103.6
08:00 pm151Unhealthy55.6111.5
09:00 pm162Unhealthy70.8150.9
10:00 pm170Unhealthy82.4189.5
11:00 pm170Unhealthy82.9198.4
12:00 am172Unhealthy86.1209.1
01:00 am170Unhealthy83.1202.6
02:00 am169Unhealthy81.0200.2
03:00 am169Unhealthy80.8204.4
04:00 am170Unhealthy82.2212.8
05:00 am171Unhealthy84.1217.0
06:00 am172Unhealthy85.7213.7
07:00 am172Unhealthy85.2201.2
08:00 am171Unhealthy84.3189.5
09:00 am174Unhealthy88.2203.0
10:00 am175Unhealthy90.1199.8
11:00 am175Unhealthy89.6193.2
12:00 pm178Unhealthy94.3200.2
01:00 pm175Unhealthy90.1199.8
02:00 pm172Unhealthy85.7198.8
03:00 pm170Unhealthy82.0198.4
04:00 pm168Unhealthy79.6197.9
05:00 pm167Unhealthy78.5196.5
06:00 pm167Unhealthy78.7192.3
07:00 pm167Unhealthy78.2171.8
08:00 pm167Unhealthy78.5160.7
09:00 pm167Unhealthy78.2162.1
10:00 pm166Unhealthy76.8166.2
11:00 pm165Unhealthy75.0168.6
12:00 am165Unhealthy75.7168.1
01:00 am163Unhealthy73.3158.3
02:00 am162Unhealthy71.2153.7
03:00 am160Unhealthy68.7140.2
04:00 am158Unhealthy65.9128.1
05:00 am156Unhealthy62.4119.2
06:00 am154Unhealthy60.1114.3
07:00 am153Unhealthy58.6112.7
08:00 am152Unhealthy57.3112.7
09:00 am158Unhealthy65.9172.3
10:00 am163Unhealthy73.1217.0
11:00 am162Unhealthy71.0211.9
12:00 pm160Unhealthy68.2201.2
01:00 pm151Unhealthy56.2164.8
02:00 pm106Unhealthy for Sensitive Groups37.7116.9
03:00 pm80Moderate24.782.2
04:00 pm69Moderate18.567.3
05:00 pm63Moderate15.457.0
06:00 pm60Moderate14.149.2
07:00 pm61Moderate14.242.4
08:00 pm63Moderate15.545.3
09:00 pm66Moderate17.245.8
10:00 pm83Moderate26.469.8
11:00 pm122Unhealthy for Sensitive Groups44.1106.2
12:00 am165Unhealthy75.2188.1
01:00 am173Unhealthy86.4210.9
02:00 am174Unhealthy88.7221.7
03:00 am172Unhealthy85.9220.7
04:00 am170Unhealthy82.4217.0
05:00 am169Unhealthy81.0217.5
06:00 am169Unhealthy80.8222.1
07:00 am167Unhealthy77.8205.8
08:00 am163Unhealthy73.3178.8
09:00 am163Unhealthy72.4189.5
10:00 am158Unhealthy65.0172.3
11:00 am149Unhealthy for Sensitive Groups54.9146.2
12:00 pm146Unhealthy for Sensitive Groups53.7148.1
01:00 pm120Unhealthy for Sensitive Groups43.2129.5
02:00 pm98Moderate34.1112.9
03:00 pm85Moderate27.495.9
04:00 pm75Moderate21.979.2
05:00 pm67Moderate17.864.3
06:00 pm62Moderate15.251.9
07:00 pm71Moderate20.049.7
08:00 pm93Moderate31.862.4
09:00 pm136Unhealthy for Sensitive Groups49.692.7
10:00 pm161Unhealthy69.6127.6
11:00 pm170Unhealthy82.2145.8
12:00 am173Unhealthy87.3151.3
01:00 am176Unhealthy90.8156.9
02:00 am177Unhealthy92.0157.9
03:00 am178Unhealthy93.6160.7
04:00 am178Unhealthy94.5163.4
05:00 am176Unhealthy91.5158.8
06:00 am174Unhealthy88.5153.2
07:00 am172Unhealthy85.4149.0
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