Welwyn AQI History

Hourly air quality data for the past 24 hours in Welwyn, Hertfordshire.

24-Hour Summary

Average AQI

Peak AQI

Best AQI

Hourly AQI Data

TimeAQICategoryPM2.5PM10
09:00 am56Moderate11.921.1
10:00 am55Moderate11.521.3
11:00 am53Moderate10.320.1
12:00 pm53Moderate10.320.6
01:00 pm54Moderate10.621.8
02:00 pm56Moderate11.726.5
03:00 pm56Moderate11.830.0
04:00 pm55Moderate11.227.5
05:00 pm55Moderate11.427.8
06:00 pm57Moderate12.329.5
07:00 pm58Moderate13.030.1
08:00 pm60Moderate13.733.4
09:00 pm61Moderate14.634.3
10:00 pm63Moderate15.333.9
11:00 pm64Moderate16.135.2
12:00 am64Moderate16.237.9
01:00 am64Moderate16.226.0
02:00 am65Moderate16.733.3
03:00 am66Moderate17.234.2
04:00 am67Moderate17.533.0
05:00 am66Moderate17.431.7
06:00 am65Moderate16.631.4
07:00 am63Moderate15.831.3
08:00 am61Moderate14.527.7
09:00 am55Moderate11.524.2
10:00 am49Good8.920.5
11:00 am42Good7.518.1
12:00 pm38Good6.917.1
01:00 pm39Good7.017.3
02:00 pm38Good6.916.6
03:00 pm36Good6.413.2
04:00 pm29Good5.310.5
05:00 pm27Good4.99.3
06:00 pm27Good4.98.6
07:00 pm26Good4.77.7
08:00 pm27Good4.87.6
09:00 pm29Good5.28.4
10:00 pm32Good5.88.7
11:00 pm36Good6.49.2
12:00 am36Good6.510.0
01:00 am43Good7.811.5
02:00 am46Good8.312.3
03:00 am41Good7.312.9
04:00 am43Good7.711.8
05:00 am41Good7.311.4
06:00 am37Good6.710.1
07:00 am34Good6.19.0
08:00 am34Good6.29.5
09:00 am34Good6.18.8
10:00 am33Good5.99.0
11:00 am30Good5.49.8
12:00 pm29Good5.210.1
01:00 pm29Good5.310.5
02:00 pm31Good5.610.7
03:00 pm30Good5.410.4
04:00 pm29Good5.39.8
05:00 pm30Good5.410.1
06:00 pm26Good4.79.4
07:00 pm25Good4.59.1
08:00 pm24Good4.37.9
09:00 pm22Good3.96.9
10:00 pm21Good3.87.0
11:00 pm23Good4.27.1
12:00 am26Good4.67.2
01:00 am27Good4.96.9
02:00 am29Good5.27.0
03:00 am26Good4.77.5
04:00 am27Good4.87.8
05:00 am24Good4.47.5
06:00 am24Good4.47.6
07:00 am23Good4.26.9
08:00 am21Good3.86.6
09:00 am17Good3.16.3
10:00 am15Good2.76.0
11:00 am16Good2.85.6
12:00 pm17Good3.16.2
01:00 pm18Good3.36.5
02:00 pm19Good3.46.9
03:00 pm21Good3.77.5
04:00 pm23Good4.17.9
05:00 pm23Good4.17.6
06:00 pm21Good3.76.5
07:00 pm19Good3.46.5
08:00 pm19Good3.56.6
09:00 pm26Good4.67.7
10:00 pm26Good4.78.3
11:00 pm29Good5.38.3
12:00 am31Good5.68.8
01:00 am29Good5.29.0
02:00 am29Good5.29.4
03:00 am30Good5.410.4
04:00 am36Good6.411.7
05:00 am40Good7.211.1
06:00 am44Good7.911.2
07:00 am30Good5.49.8
08:00 am26Good4.79.9
09:00 am28Good5.09.6
10:00 am29Good5.310.3
11:00 am36Good6.510.1
12:00 pm36Good6.48.3
01:00 pm36Good6.58.5
02:00 pm29Good5.39.4
03:00 pm28Good5.09.7
04:00 pm27Good4.810.0
05:00 pm28Good5.09.4
06:00 pm22Good3.97.4
07:00 pm21Good3.86.6
08:00 pm17Good3.05.1
09:00 pm13Good2.43.5
10:00 pm11Good2.02.6
11:00 pm10Good1.82.9
12:00 am9Good1.72.6
01:00 am9Good1.72.1
02:00 am8Good1.52.1
03:00 am7Good1.31.9
04:00 am7Good1.22.0
05:00 am7Good1.32.0
06:00 am8Good1.42.0
07:00 am8Good1.52.4
08:00 am8Good1.52.1
09:00 am10Good1.82.4
10:00 am12Good2.23.6
11:00 am14Good2.64.0
12:00 pm17Good3.04.6
01:00 pm15Good2.74.1
02:00 pm14Good2.54.1
03:00 pm18Good3.34.9
04:00 pm15Good2.74.3
05:00 pm12Good2.23.6
06:00 pm13Good2.44.4
07:00 pm12Good2.13.2
08:00 pm14Good2.63.7
09:00 pm16Good2.84.0
10:00 pm18Good3.34.7
11:00 pm21Good3.75.1
12:00 am17Good3.15.0
01:00 am14Good2.54.6
02:00 am15Good2.74.3
03:00 am17Good3.04.4
04:00 am20Good3.65.2
05:00 am22Good3.95.9
06:00 am18Good3.36.6
07:00 am18Good3.27.0
08:00 am17Good3.16.5
09:00 am16Good2.85.9
10:00 am14Good2.55.5
11:00 am16Good2.96.1
12:00 pm16Good2.84.7
01:00 pm14Good2.54.6
02:00 pm13Good2.33.7
03:00 pm16Good2.85.4
04:00 pm21Good3.76.9
05:00 pm26Good4.67.9
06:00 pm22Good4.06.4
07:00 pm19Good3.56.8
08:00 pm23Good4.17.1
09:00 pm23Good4.16.6
10:00 pm26Good4.77.7
11:00 pm27Good4.98.1
12:00 am27Good4.99.6
01:00 am29Good5.310.9
02:00 am30Good5.410.5
03:00 am30Good5.410.5
04:00 am29Good5.38.7
05:00 am29Good5.29.2
06:00 am28Good5.09.2
07:00 am27Good4.89.1
08:00 am21Good3.87.8
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