Watford AQI History

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

24-Hour Summary

Average AQI

Peak AQI

Best AQI

Hourly AQI Data

TimeAQICategoryPM2.5PM10
08:00 am59Moderate13.323.2
09:00 am58Moderate12.723.3
10:00 am55Moderate11.221.0
11:00 am55Moderate11.321.3
12:00 pm55Moderate11.020.9
01:00 pm55Moderate11.424.8
02:00 pm57Moderate12.229.6
03:00 pm56Moderate11.929.0
04:00 pm56Moderate11.827.5
05:00 pm57Moderate12.229.2
06:00 pm56Moderate11.930.8
07:00 pm58Moderate12.829.4
08:00 pm60Moderate13.831.9
09:00 pm61Moderate14.731.0
10:00 pm63Moderate15.633.8
11:00 pm64Moderate16.235.9
12:00 am65Moderate16.437.2
01:00 am63Moderate15.725.1
02:00 am65Moderate16.633.5
03:00 am67Moderate17.933.1
04:00 am67Moderate17.732.6
05:00 am66Moderate17.231.5
06:00 am65Moderate16.530.8
07:00 am63Moderate15.328.9
08:00 am61Moderate14.428.1
09:00 am55Moderate11.426.9
10:00 am54Moderate10.625.5
11:00 am52Moderate9.622.2
12:00 pm46Good8.221.4
01:00 pm41Good7.320.7
02:00 pm39Good7.017.7
03:00 pm33Good5.914.3
04:00 pm34Good6.110.8
05:00 pm27Good4.99.1
06:00 pm26Good4.78.6
07:00 pm27Good4.87.8
08:00 pm28Good5.17.8
09:00 pm28Good5.18.5
10:00 pm31Good5.69.2
11:00 pm33Good6.09.2
12:00 am34Good6.28.7
01:00 am33Good6.010.2
02:00 am35Good6.310.6
03:00 am41Good7.311.1
04:00 am41Good7.312.7
05:00 am41Good7.311.7
06:00 am37Good6.710.6
07:00 am33Good6.09.8
08:00 am32Good5.89.1
09:00 am32Good5.79.6
10:00 am31Good5.610.0
11:00 am32Good5.810.8
12:00 pm32Good5.711.5
01:00 pm33Good5.911.2
02:00 pm32Good5.710.5
03:00 pm32Good5.711.0
04:00 pm33Good5.911.8
05:00 pm32Good5.711.9
06:00 pm31Good5.612.4
07:00 pm27Good4.811.2
08:00 pm26Good4.69.0
09:00 pm23Good4.27.8
10:00 pm22Good4.07.4
11:00 pm24Good4.47.0
12:00 am27Good4.86.6
01:00 am27Good4.86.7
02:00 am28Good5.17.5
03:00 am27Good4.97.9
04:00 am27Good4.87.5
05:00 am26Good4.77.7
06:00 am24Good4.37.7
07:00 am23Good4.27.4
08:00 am22Good4.07.2
09:00 am19Good3.56.3
10:00 am17Good3.15.7
11:00 am17Good3.16.0
12:00 pm19Good3.46.0
01:00 pm23Good4.17.4
02:00 pm22Good4.07.9
03:00 pm24Good4.38.3
04:00 pm25Good4.58.9
05:00 pm24Good4.37.9
06:00 pm22Good4.07.5
07:00 pm21Good3.88.2
08:00 pm22Good3.98.0
09:00 pm28Good5.18.7
10:00 pm34Good6.19.0
11:00 pm34Good6.29.6
12:00 am32Good5.89.5
01:00 am32Good5.89.4
02:00 am33Good6.011.2
03:00 am36Good6.411.5
04:00 am39Good7.011.8
05:00 am42Good7.511.8
06:00 am43Good7.810.6
07:00 am32Good5.710.9
08:00 am28Good5.110.3
09:00 am30Good5.410.7
10:00 am30Good5.410.7
11:00 am36Good6.510.3
12:00 pm36Good6.48.9
01:00 pm37Good6.79.2
02:00 pm33Good6.09.9
03:00 pm31Good5.610.1
04:00 pm34Good6.19.8
05:00 pm29Good5.210.4
06:00 pm23Good4.27.4
07:00 pm19Good3.56.3
08:00 pm17Good3.14.4
09:00 pm13Good2.43.7
10:00 pm13Good2.43.2
11:00 pm11Good2.02.9
12:00 am10Good1.82.6
01:00 am9Good1.72.0
02:00 am8Good1.51.9
03:00 am7Good1.31.9
04:00 am7Good1.32.0
05:00 am7Good1.31.9
06:00 am8Good1.52.2
07:00 am9Good1.72.6
08:00 am10Good1.82.5
09:00 am12Good2.13.4
10:00 am13Good2.33.7
11:00 am14Good2.64.3
12:00 pm14Good2.64.2
01:00 pm14Good2.64.2
02:00 pm17Good3.14.5
03:00 pm16Good2.94.6
04:00 pm17Good3.05.3
05:00 pm15Good2.74.6
06:00 pm18Good3.34.6
07:00 pm19Good3.54.3
08:00 pm16Good2.84.3
09:00 pm18Good3.34.6
10:00 pm19Good3.55.2
11:00 pm19Good3.55.2
12:00 am17Good3.15.2
01:00 am18Good3.24.8
02:00 am18Good3.34.8
03:00 am18Good3.35.4
04:00 am19Good3.46.2
05:00 am19Good3.46.8
06:00 am18Good3.26.9
07:00 am17Good3.16.5
08:00 am16Good2.96.4
09:00 am15Good2.76.3
10:00 am17Good3.06.6
11:00 am20Good3.66.6
12:00 pm17Good3.04.6
01:00 pm14Good2.53.9
02:00 pm14Good2.54.2
03:00 pm19Good3.46.4
04:00 pm24Good4.48.0
05:00 pm28Good5.08.5
06:00 pm24Good4.48.2
07:00 pm24Good4.47.8
08:00 pm28Good5.19.2
09:00 pm28Good5.19.6
10:00 pm29Good5.39.4
11:00 pm31Good5.510.5
12:00 am31Good5.511.5
01:00 am31Good5.511.4
02:00 am31Good5.611.5
03:00 am30Good5.411.0
04:00 am31Good5.510.3
05:00 am29Good5.210.5
06:00 am28Good5.010.7
07:00 am27Good4.810.3
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