10µm
2.5
µm
 1µm
Relative Sizes
Dorchester, Dorset, UK.

Particulate Matter Air Quality
Latest measurement from: 06 Dec 2020 01:37 GMT (t 2.6°C / RH 95%)  Sensor: AirLink #001D0A100112

 Index style
Lang. 
Period Particle Conc. Index UK Classification           
now µm10 38.72 µg/m3 3 Low   
       
now µm2.5 36.94 µg/m3 4 Moderate    
      
now µm1 18.5 µg/m3 3 Low   
       

Last hour avg µm10 33.51 µg/m3 3 Low   
       
Last hour avg µm2.5 29.9 µg/m3 3 Low   
       

Last 3h avg µm10 26.07 µg/m3 2 Low  
        
Last 3h avg µm2.5 23.33 µg/m3 3 Low   
       

"Nowcast" µm10 26.88 µg/m3 2 Low  
        
"Nowcast" µm2.5 24.02 µg/m3 3 Low   
       

Last 24h avg µm10 6.65 µg/m3 1 Low
         
Last 24h avg µm2.5 5.69 µg/m3 1 Low > 1 <2345678910

UK Classification Index µm10 µm2.5 The health effects should be based on 24 hours average values only.
 Low  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
 Moderate  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
 High  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 High  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 where you can find a wealth of information


Highly Modified Wim DKuil (Leuven) Script by beteljuice for use with Davis AirLink sensors.