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Cheesekraft

Chiang Mai Air Quality & Pollution

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3 hours ago, elephant45 said:

So now you can't drink the water, breath the air, and eat the toxic food.

"Up to 41% of popular vegetables and fruits sold at fresh markets and supermarkets have been found to contain toxic chemical residues above the safe level, according to an annual food test by the Thailand Pesticide Alert Network (Thai-PAN)". From BKK Post.

That's impossible, I see soo many vegans who say Thai produce is the best.  They take selfies with apples and mangoes and walk past the bar girls in the pollution next to the elephants and yell, "durian!!"  when you live on the "cheap," expect stuff to be bad.  Of course we would pay an extra 10 baht for safety, but nobody else would.  

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16 minutes ago, Cheesekraft said:

SCAU6xe.png

That is not at all representative of the readings for Chiang Mai.  Take your data elsewhere, we do not need misinformation here.

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11 minutes ago, SoilSpoil said:

Good for tourism these numbers. 

How is it possible that a PM2.5 reading can be higher than a PM10 reading, PM2.5 is a subset of PM10?

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2 minutes ago, Dante99 said:

That is not at all representative of the readings for Chiang Mai.  Take your data elsewhere, we do not need misinformation here.

Peoples like to ignore the fact that these readings are taken from areas that are bad, thats why they put them there, to see just how bad!, usually in areas where traffic is bad. I am outside UT, reading today is 37 outside the city, in the city it is 120, which one is correct? you have to use the information available in a responsible manner! There's enough "Drama" in life as it is!

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Problem is more or less wide spread now all over Thailand especially the wind is very weak as zero TODAY ! 😥

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1 hour ago, CGW said:

Peoples like to ignore the fact that these readings are taken from areas that are bad, thats why they put them there, to see just how bad!, usually in areas where traffic is bad. I am outside UT, reading today is 37 outside the city, in the city it is 120, which one is correct? you have to use the information available in a responsible manner! There's enough "Drama" in life as it is!

 

That was the worst reading in the city , but there are many spots over 160 and the lowest is 111. Traffic has nothing to do with it. The mountains are also totally invisible behind the blanket of grey death today 😞

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Hello, @ saengd,

I remember, particulate matter is a bit difficult to calculate...

One might find a lot of information here:

https://www.epa.gov/report-environment

 

Readings? - This might have been a bad representation or just a mistake.

I don't know.

But we all know, it's smoggy outside. Not everywhere, but almost everywhere in Thailand.

More or less.

 

And I don't understand what  Dante99

was writing. Just have a look at the actual screenshots.

image.png.e83b07d33464b194b86c043abf015dd1.pnghttp://aqicn.org/here/

 

image.png.77ed2525de2c3205c9f48235e11bccc7.pngimage.png.9216b636c17056e332dad98586227084.pngimage.png.f93faa36100e0aec01e46ed918e93a98.png

airvisual.com

 

 

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1 minute ago, Cheesekraft said:

Traffic has nothing to do with it.

So when it is not burning season there is no pollution - interesting & different to everywhere else in the country.

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Just now, Yom said:

Hello, @ saengd,

I remember, particulate matter is a bit difficult to calculate...

One might find a lot of information here:

https://www.epa.gov/report-environment

 

Readings? - This might have been a bad representation or just a mistake.

I don't know.

But we all know, it's smoggy outside. Not everywhere, but almost everywhere in Thailand.

More or less.

 

And I don't understand what  Dante99

was writing. Just have a look at the actual screenshots.

image.png.e83b07d33464b194b86c043abf015dd1.pnghttp://aqicn.org/here/

 

image.png.77ed2525de2c3205c9f48235e11bccc7.pngimage.png.9216b636c17056e332dad98586227084.pngimage.png.f93faa36100e0aec01e46ed918e93a98.png

airvisual.com

 

 

I did subsequently look into that issue and indeed it is almost not possible, except in laboratory conditions, for PM<2.5 to be greater than PM<10 since one is a subset of the other. In fairly recent times the PM <2.5 calculation was extrapolated from the PM <10 using a formula since many countries didn't have PM <2.5 measurement technologies which were very expensive.

 

BUT AQI tables involve ranges of numbers, because of this it is possible for AQI readings of PMs 2.5 and 10 to overlap which causes the anomaly.

 

 

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Has anyone else noticed that when you ck the AQI for Chiang Mai,  very quickly all the stations pop up with two that are purple (high) then those two quickly disappear? Then there you see quickly only two grey rectangular boxes. They are in town.

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There is also the issue of motorcycles with zero pollution control on them. So 4 MC's = one car with no emissions control. Please Japan.

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154 and climbing near Maya. What a shame.

Edited by dcnx

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