Yom

Feb 27,  2021   -   18:00

                  ***********

Feb 27,  2021   -   12:00 

Different PM2.5 readings.

http://www.air4thai.com/webV2/region.php?region=2

  ~  AQI 164

https://aqicn.org/city/thailand/phrae-meteorological-station

  max.  AQI 239

https://aqicn.org/station/สำนักงานสาธารณสุขจังหวัดแพร่

  max.  AQI 385

Village north of Phrae, 11:00

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

58 minutes ago, songhklasid said:

worst month or period in cnx for smoke

You might be wrong. This was 2020.

1 hour ago, songhklasid said:

beaches & islands

Good idea? - Good idea.

Enjoy yourself.

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

Februar 27,  2021   -   9:00

https://aqicn.org/here

     PM2.5 ug/m3  ~  AQI

Lampang      177  /   227

Phrae            152  /   202

Chiang Mai  109  /   179

Phayao            92  /   170

Chiang Rai      72  /   160

Village, north of Phrae   

PM2.5   327ug/m3  ~  AQI  377

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

Feb 26   -   21:00

                    ************

February 26,  2021   -   10:00

                   ************

At first, congratulations to 'Klaus'! - By heart.

And thanks to all these Thai people, helping on the road.

47 minutes ago, damascase said:

Listen carefully to what your body tells you

Wonderful idea, but No!  First check the weather  conditions, temperature, humidity and

in the north of Thailand in February, the air pollution. - That's all.

14 hours ago, canopy said:

why you let people steal those precious good years from you and you did nothing.

 Well said. And so simple.

Feb 25,  2021   -   22:00

            PM2.5 ug/m3    ~     AQI

Phrae          134   /    191

Lampang   114   /    181

Phayao       106  /    177

ChiangMai   48  /    132

ChiangRai    40  /    111

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

February 25,  2021   -   numbers 5:00

https://www.iqair.com/thailand/phayao

https://aqicn.org/here  

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

Feb 24,  2021   -   numbers 18:00                                                                                                                                                                                                                                                                                                                                                                                                                                                                              Pm2.5   ~    AQI

Lampang 172   /  222

Phayao 159   /  209

Phrae 129   /  189

CR 69   /  158

CM 49   /  134

https://www.iqair.com/thailand/phayao

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

February 24,  2021   -   numbers 6:00

     PM2.5 ug/m3   ~   AQI

Lampang        152  /   202    

Phrae              137  /   193 

ChiangMai       74  /   161

ChiangRai        63  /   155 

Phayao             42  /   117

Some might remember this factsheet - epa.gov

left:   PM2.5-numbers                           right:   AQI

 2012_aqi_factsheet.pdf

P.S.  I know there are different models, I trust this one.

By the way, at 10:00 north of Phrae PM2.5  230ug/m3 ~ AQI  280,

while Nong Muang Khai shows an AQI of 315.  Mai pen rai, 280 or 315...

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

On 2/22/2021 at 6:01 PM, RanongCat said:

I can laugh at your  question.

Some day you'll understand.

Feb 23  -   Update          PM2.5  ~  AQI

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

Feb 23      

e.g. between ChiangMai and Nakhon Sawan

   **** Real-time Thailand city ranking*****

PM2.5 ug/m3 ~   AQI

Lampang 137 /   193

Phrae        129 /   189

CM              48 /   132

Phayao       34 /    97

CR               27 /    82

                   ***************

February 23,  2021  -   Bad air

almost everywhere in Thailand even at 11:00

https://aqicn.org/here

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

Feb 22   -   18:00

North of    PM2.5  65  ~  AQI 156 

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

February 22,  2021   -   9:00

Upper north much better than the rest of Thailand

20 km north of Phrae  PM2.5  165 ug/m3 ~ AQI  215

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

27 minutes ago, internationalism said:

I check online

I think it's not enough.

28 minutes ago, internationalism said:

I have decided to get purifies because of covid

That's another subject, but without any own PM2.5-meter, you'll never know what's really going on.

So I better  should say: stay well. 

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

One question: From where does all this particulate matter stem from?

I like to suspect India, China, Bangladesh, then slash and burn, the Thai farmers,

the power plants Mae Moh and Mae Sot, the gas and diesel exhausts, the abrasion

of the brake and clutch linings, - oh, the fires in Cambodia and in Laos and the aircrafts, too.

All, everthing is bad. Stop.

I'm sure I forgot something.

What about this virgin state of Myanmar?

One reading thanks to the US Embassy Rangoon, Yangon, ရန်ကုန် or what?

Yangon boasts the largest number of colonial-era buildings in Southeast Asia,^[4] 

and has a unique colonial-era urban core that is remarkably intact.  Thanks, Wiki!

And only one measuring point?  -  OK.

https://aqicn.org/city/maynmar/rangoon/us-embassy/

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

7 hours ago, internationalism said:

reading dropped by 50aqi within 1h

That is possible.

Try out  https://www.airnow.gov/aqi/aqi-calculator/ and  check the difference of the 

PM2.5 values. - A strong breeze might produce this in some minutes...

By the way, do you have PM2.5-meters? - It's a 'must'.

Just adding: PM2.5 numbers totally different from AQI...

I use two different devices, because years ago, I couldn't believe what the first one showed.

This applies to the met. stations also. - A 'certain uncertainty' however will always remain.

* This subject is more difficult than often thought. *

May I suggest? Xiaomi Mi Air Purifier 3H/2S, not expensive and works well,

replacement filters normal price.  e.g.  https://www.lazada.co.th/

A PM2.5-meter is included, but better have your own meter too.

Some devices here:  

https://forum.thaivisa.com/topic/1143398-phrae-pm25-numbers-2020/page/39/#comments

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

February 21,  2021   -   11:00

Glad to read this. ChiangMai, Phrae,

Lampang worse.

PM2.5  ug/m3    AQI

CR               36 /     101     

CM              50 /     137              

Phayao M. 38 /     107 

Phrae          51 /     139

Lampang  121 /     181                   

               ******************* 

Feb 20,  2021   -   numbers   17:00

Lampang/Mae Moh isn't too far from Phrae,

Phayao, Chiang Rai, so I think this table

might be interesting for all.

# 4 another lignite fired power plant,

may be without correct filters.

               *************

Feb 20,  2021   -   numbers 17:00  

This is not smoke from Greta555, it's the

particulate matter table, the Top Ten of

Thailand. - ChiangMai people should be glad.

Please, don't mention Mae Moh near Lampang. 

It's only a coincidence.-You want to know more about

Mae Moh?  It's a lignite fired power plant, and I think,

they're not cleaning their filters since 20something.

(same with Mae Sot/Tak)

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

It's not a question of believe.

Everyone should be able to read a PM2.5 meter.

Here and now - it shows between 25 and 30 ug/m3.

I think there are no other air pollutants to consider, 

so the AQI might be between 78 and 89.

OK?

By the way, a village nearby:  AQI 81

Phrae city(20km)  AQI  152-165 

(https://aqicn.org/here)

Some models:

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