Lang. 
Beteljuice test page
Slightly Modified Wim DKuil (Leuven) Script for PurpleAir sensors (Using local data file) or (Using purpleair.com)
Donor data from 'Sperber' https://wetterpreistrath.net

10µm
2.5
µm
 1µm
Relative Sizes
Particulate Matter
Air Quality
Latest measurement from: 31 Oct 2020 18:02 (t 17.2° / RH 65%)  Sensor: Purpleair #60443

 Index style
Period Particle Conc. Index UK Classification           
now µm10 20.66 µg/m3 2 Good  
        
now µm2.5 19.23 µg/m3 2 Good  
        
now µm1 11.91 µg/m3 2 Good  
        

24h avg. µm10 5 µg/m3 1 Good
         
24h avg. µm2.5 5 µg/m3 1 Good > 1 <2345678910
24h avg. µm1 3 µg/m3 1 Good
         

UK Classification Index µm10 µm2.5 The health effects should be based on 24 hours average values only.
 Good  1 < 16 μg/m3 < 11 μg/m3 Enjoy your usual outdoor activities
2 < 33 μg/m3 < 23 μg/m3
3 < 50 μg/m3 < 35 μg/m3
 Fair  4 < 58 μg/m3 < 41 μg/m3 Enjoy your usual outdoor activities
Adults and children with lung or heart problems, who experience symptoms, should consider reducing strenuous physical activity, particularly outdoors
5 < 66 μg/m3 < 47 μg/m3
6 < 75 μg/m3 < 53 μg/m3
 Poor  7 < 83 μg/m3 < 58 μg/m3 Anyone experiencing discomfort such as sore eyes, cough or sore throat should consider reducing physical activity, particularly outdoors.

Adults and children with lung problems, and adults with heart problems, should reduce strenuous physical activity, particularly outdoors, and particularly if they experience symptoms.
People with asthma may find they need to use their reliever inhaler more often.
Older people should also reduce physical exertion.
8 < 91 μg/m3 < 64 μg/m3
9 < 100 μg/m3 < 70 μg/m3
 Very poor  10 > 100 μg/m3 > 70 μg/m3 Reduce physical exertion, particularly outdoors, especially if you experience symptoms such as cough or sore throat.
Adults and children with lung problems, adults with heart problems, and older people
should avoid strenuous physical activity.
People with asthma may find they need to use their reliever inhaler more often.
Visit UK Air Quality site & Purpleair sensors where you can find a wealth of information

2 'widget' using current 2.5pm value and country index
You can set timezone
You can set particle size(s)
You can set 'period(s)'
You can set country classification (values and description) ('BE', 'eea', 'IE', 'NL', 'UK', 'US')
You can show (or not) classification 'key table'
Currently 4 langs ('DE', 'EN', 'FR', 'NL')

Another beteljuice plaything