Yom

4 hours ago, Sheryl said:

... it is common in such cases to ask the Village Chief ...

We asked him for a few lines to confirm our identity.

And he confirmed too that my wife's mother would agree with me living in their house...

(perhaps this had to be reconfirmed by the amphoe? - some time ago)

OK, a bit crazy, but just try.

November 5  -  11:00

The northernmost part green again.

Interesting - well known? 

https://www.theguardian.com/environment/2020/nov/04/tiny-air-pollution-rise-linked-to-11-more-covid-19-deaths-study

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5 minutes ago, VocalNeal said:

Must be the wind direction? Phayao is 45

Thanks for information.

Wind is the main vector, I suppose too.

November 4   - I

20 km north of Phrae:

Noon   40 ug/m3     AQI 112         

18:00   50 ug/m3     AQI 137  

People with respiratory or heart disease, the elderly and children are the groups most at risk.

https://www.airnow.gov/aqi/aqi-calculator-concentration/

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November 4   -   Numbers 8:00

aqicn.org

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November 2

                   ************

October 31

                   ************

October 30     -   17:00 to 20:00

Thanks to rain almost green everywhere.

The Overview not so nice:

                         ************

Just one look

https://firms.modaps.eosdis.nasa.gov/map/

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7 hours ago, fruitman said:

And the European countries still buying it ...

There are sooo many.

Interesting too:

In the 2018/19 harvest year, a total of around 185 million tons of sugar

were produced worldwide. The German Südzucker Group is one of the

largest sugar producers in the world.

(There is a lot of sugar beet productiononly  in Germany. I think they allow importing Thai sugar

with very heavy taxes.   BavariaFirst. - Bavaria is a Federal State of Germany.)

Returning to the OP reporting 'PM2.5 levels between 25 and 52

micrograms per cubic metre'.  

That means an AQI between 78 (moderate) and 142

(unhealthy for Sensitive Groups).

https://www.airnow.gov/aqi/aqi-calculator-concentration/

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October 29

North yellow and a bit of green and orange,

Isaan mostly green.

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35 minutes ago, Venom said:

Four months of breathable air per year is all you're permitted.

Sorry, this is a bit imprecise.

2020  -  Chiang Mai University (Mae Hia)

2019

9 hours ago, DaveInSukhumvit said:

I wonder how many of these places burn at night??

Not only at night...

Here some numbers 18:00 today.

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October 27

Last night a lot of rain, so many green spots.

https://aqicn.org/here    17/18:00

 Phrae-Rongkwang

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

We might/should have a look at 

Chiang Mai Air Quality & Pollution

First Page

I think, everything is already said. - So only my two screenshots from today.

The first (ventusky.com) seems to me a bit exaggerated. But who knows? 

aqicn.org/here

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19 hours ago, Forza2002 said:

AQI getting higher again... over 100 in some places today.

This might happen every now and then.

Just a look from Oct. 2019 to May 2020 - Chiang Mai - CMIS  PM2.5 

2020

2019

Chiang Mai - CMIS  PM2.5   

So, did you check your air purifier already?

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October 26

Green-yellow-orange

Phrae Province - Welcome new stations!

103 - Phrae Hospital                                              (PM2.5  17:00)

67 - Ban Tae

37 - Ban Thung Khaeo

20 - Rongkwang Hosp./Rongkhem (101/103)

76 - Ban Nong Muang Khai

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

October 24   ~   19:00

Same , same?

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

October 23

North green-yellow

Bangkok yellow-orange

Isan yellow

Autumn colors ?

                     ***************

October 22      ~  20:00

Changes

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October 21  -  I     20:00

               ***********

October 21

Fires last 24 hrs

https://firms.modaps.eosdis.nasa.gov/map/

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October 20  -  14:00

PM2.5

         *******

October 19 - I

Rainfall and flooding info:

Isan: Heavy rainfall occurred in some areas throughout the week

with very heavy rainfall in some areas on 15 and 17 Oct. Flood

occurred at Nakhon Ratchasima province on 12-16 Oct., at Si Sa Ket

province on 13 Oct., at Ubon Ratchathani province on 15 Oct., at

Chaiyaphum province on 17 Oct.

Eastern: Flood occurred at Sa Kaeo province on 12-15 Oct., at

Chachoengsao province on 13-15 Oct., at Chonburi and Prachinburi

provinces on 18 Oct.

(Cambodia and Vietnam were hit too.)

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

October 19

Bangkok most parts yellow, some orange.

Up north green, some yellow. 

While there is so much rain?

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