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Phrae PM2.5 Numbers 2020


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Posted (edited)

December 14   -   18:30

 

North of Phrae  100 ug/m3  PM2.5

or AQI  174        image.png.86b67fa186b2a4770a496b838afd88b7.png

 

 

  image.png.b31d7f25c80a22666db909ef4c73ce95.png  

 

North - some places bad, others not.

                   **************

Edited by Yom
Posted

December 15   -   6:30

 

When you walk through the dust
Hold your head up high
And don't be afraid of the dark ...

You'll never walk alone,

neither in ChiangRai nor in Bangkok.

image.png.d5be315e3678f952cd122306dc5f46b6.png

 

air quality  -  a bit hidden in:  bangkok-news

*  residents-of-bangkok-advised-to-avoid-out-door-

   activities-as-air-quality-worsens

*  bangkok-air-pollution-at-unsafe-levels

*  thick-pm25-to-continue-until-dec-17   

*  pollution-in-bangkok-hits-harmful-levels-on-friday-11-dec

    (4 different threads on TV today...)

 

image.png.312e819e3f2cb8d1445f8780344fe0f9.png

https://aqicn.org/here   5:00

                 *********************

 

Posted

December 15   -   18:00

While CM and CR are yellow and orange

- with some red dots -

and the Isan mostly green, Bankok is

not good, but has improved a lot.

image.png.e159e757eb5ebd8e69e2ee51951f442d.png

               ***********

 

Posted

December 17   -   18:00

 

Bangkok some dirt spots, the north yellow-orange

with some red while Isan a lot of green.

image.png.fc3ced9e8248a343a0a5aa656208e5e2.png

                       ***********

Posted

Dec. 17   -   this afternoon.

These are the clouds transporting 'dirt' from eastnortheast to...?

image.png.306e9b1862edebcc456dd2ed4140b1ec.png

                                   **************

 

 

Posted

December 18   -   19:00

North:  air quality not good. - Those affected

should switch on their air purifiers.

image.png.aa9b523f3439a97f37dc8fbe2f90d293.png

                   ************

Posted

December 21   -   17:00

Winter solstice - no snow, no ice,

but a lot of green

image.png.eb62710f2ac1f7eba37bfba5440bc3c4.png

                         **************

Posted

December 22   -   17:00

North remaining yellow and orange,

Bangkok and Isan better than yesterday.

image.png.c2c4bcb43049484a32877a1d13bdaa23.png

                        *********

Posted (edited)

December 23   -   17:00

 

image.png.7acaf9cca70c72b33ecf397f91968b3c.png

                            ************

Edited by Yom
Posted

December 24   -   8:00

 

image.png.3ed8325f50d13d89869063fde8ea9331.png

Bangkok and Isan similar

                                 ************

Posted (edited)

December 25   -   9:00

One of the two is much 'better'

image.png.627c775fe389e0e7c5ec12d781d2239e.png
same scale

image.png.ebe5a67457c651a641630bc3a1a7b970.png

 

Some interesting posts on thaivisa

https://forum.thaivisa.com/topic/1198225-toxic-haze-

hits-14-areas-in-bangkok-vicinity/?tab=comments

#comment-16109941

or

 

https://forum.thaivisa.com/topic/1198222-im-fed-up/

page/2/?tab=comments#comment-16110041

 

 

                        ***********

Edited by Yom
Posted

December 28   -   11:00

image.png.fb1e06693c2dfbf91849205f3691935a.png

not much different from yesterday

                      ***************

Posted
On 12/26/2020 at 11:44 AM, Yom said:

North and Bangkok bad air again

 

What standard do you use for your basis of good or bad? 

Posted (edited)
5 hours ago, VocalNeal said:

What standard do you use for your basis of good or bad? 

 

Thanks for your question, Mr. VocalNeal.

Is there any standard anywhere for good and bad?

You are  referring to this picture?

image.png.956b5214c12d5cae53688939539ba99e.png

There are so many sophisticated sensors these days all over the world

and so many different models to calculate, to represent, that you must

decide for yourself, what to accept, what to trust, what's good, what's bad.

'bad'

Under the given circumstances (what is feasible in TH?)

50 to 60 ug/m3 PM2.5 or AQI 137 to AQI 153 is bad till very bad.

Everything above I usually call crazy.

Even if you usually can't see or smell the air pollution.

 

There are different limits all over the world. I would prefer US standards, 

better than EU or Thailand, while China seems to be the bad boy.

 

Please have a look at the decreasing ug/m3–PM2.5-numbers over

19 years in the US. -  Thailand will never reach this goal.

At least not in my lifetime.

 

image.png.a17b943c45c400a75f1073b792dbfd51.png

https://www.epa.gov/air-trends/particulate-matter-pm25-trends

To add:  US 'National Sstandard'  ~ 12ug/m3   that means an   AQI  50.

People often confuse the names/units.

                                    *****************

 

 

Edited by Yom
  • Thanks 1
Posted

OK cheers. Most posts or sites seem to concentrate on dust ie. PM2.5 which is mostly construction or blown from outside countries except of course in BKK. (condo construction etc.)

Posted

December 29   -   19:00

Good or Bad - You can decide

image.png.967ea3d34bc63652ca1ca1327fc47d7c.png

                  ***********

 

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