Does this kind of data say it all about the assessment of air pollution in CM .. and probably Thailand

[Caspersfriend]

Why the disparity in such a relatively small area of inner city and suburbs?

[eyecatcher]

I think because the Govt have recommended all monitoring equipment should be set up in school stock cupboards to  get the best readings.....for publishing

[THAIJAMES]

Car polution

[CGW]

1 minute ago, THAIJAMES said:

Car polution

My thoughts as well, they put the monitors where high PM is expected to monitor same, usually high traffic areas, no point putting monitors where there is no pollution.

(unless there's a brown envelope involved )

[eyecatcher]

2 minutes ago, THAIJAMES said:

Car polution

And trees, which are very good at balancing climatic conditions in the rural areas.

[Samuel Smith]

Localised burning? 

[sfokevin]

Urban area, car pollution and airport...

[Unify]

Be aware, not all stations monitor the small particle pollution, so comparing one meter to another may be apples to ourselves m oranges.

 

The monitoring station near where I lived before I fled, stopped monitoring pm 2.5, and therefore gave what I can only call 'optimistic' readings, and then went down altogether.

[THAIJAMES]

PM 2.5 meters sensors are so inexpensive why rely on a sensor that is not at where you live or work.

 

Even a few meters can make a big difference in readings.

 

PM 2.5 Sensors are very portable so even if you're here for only a a few weeks or months you can take them with you.

 

[sfokevin]

I live in the lower part of the OPs Map and have a basic Xaiomi PM2.5 monitor in my garden and my readings consistently track within 1-2 points of the two nearby schools monitors that are shown on the OPs maps...

[stuartd1]

I've often noticed heavy smoke coming from a location an area area SW of that corner of the moat. Looks like a rubbish burn.

[beau thai]

On 6/10/2019 at 8:30 AM, THAIJAMES said:

PM 2.5 meters sensors are so inexpensive why rely on a sensor that is not at where you live or work.

 

Even a few meters can make a big difference in readings.

 

PM 2.5 Sensors are very portable so even if you're here for only a a few weeks or months you can take them with you.

 

Can you recommend an inexpensive reasonably accurate sensor please,as I suspect there are very many inaccurate ones around?

[New beginnings]

It’s interesting to note that the UK Foreign Office website has recently been updated. It now specifically warns UK citizens of the poor air quality especially in both Bangkok and Chiangmai. Reading the advise it does not actually refer to the smoky season and, as such, visitors may think this is a year long problem. Wonder if this could lead to a reduction in the number of UK visitors or those looking to retire in Chiangmai?

[bkk6060]

Too much nit picking with these machines.

I just spent the past 2 weeks in CM it was beautiful.  Played golf just about every morning.

Some rain in the evening,  Seemed all clear and fresh to me thoroughly enjoyed myself.

Some need to live their life and move on...

[Mapguy]

The past two weeks have been clear— and have been Fine generally. Poster bkk6060 should have been here mid-February - May. Very serious pollution generally.

 

 

Sent from my iPhone using Thaivisa Connect

 

[THAIJAMES]

21 hours ago, beau thai said:

Can you recommend an inexpensive reasonably accurate sensor please,as I suspect there are very many inaccurate ones around?

I use the xiaomi pm 2.5 sensors available on AliExpress.

 

They have a cheap one that can't be controlled from their app which is only about $27 if you want to see results on your app when you're away from home then you can get the more expensive one for $55

 

You can also get them from Lazada but they will be a little more expensive.

 

The Air is excellent right now and there's no need for concern but there will be days during this rainy season when it does go to unhealthy levels when we have heavy cloud cover for a few days and the air pollution from cars builds up.

[beau thai]

3 hours ago, THAIJAMES said:

I use the xiaomi pm 2.5 sensors available on AliExpress.

 

They have a cheap one that can't be controlled from their app which is only about $27 if you want to see results on your app when you're away from home then you can get the more expensive one for $55

 

You can also get them from Lazada but they will be a little more expensive.

 

The Air is excellent right now and there's no need for concern but there will be days during this rainy season when it does go to unhealthy levels when we have heavy cloud cover for a few days and the air pollution from cars builds up.

Thank you. I have a xaomi air purifier with a sensor display but I am unsure how accurate it is. Apart from that, if I can see Doi Kham in the distance, then the air is generally ok!

But a sensor on my terrace is probably sensible before next smoky season

[THAIJAMES]

6 hours ago, beau thai said:

Thank you. I have a xaomi air purifier with a sensor display but I am unsure how accurate it is. Apart from that, if I can see Doi Kham in the distance, then the air is generally ok!

But a sensor on my terrace is probably sensible before next smoky season

I also have 2 xiaomi air purifiers with sensors and also the cheap one and the more expensive one.

The more expensive one might be more sensitive, but to tell you the truth a few aqi points does not make that much of a difference.  I have found it to be very similar reading to a station nearby.

[THAIJAMES]

On 6/11/2019 at 1:39 PM, bkk6060 said:

Too much nit picking with these machines.

I just spent the past 2 weeks in CM it was beautiful.  Played golf just about every morning.

Some rain in the evening,  Seemed all clear and fresh to me thoroughly enjoyed myself.

Some need to live their life and move on...

As a visitor of course you are right.  But as a resident there is no effort involved.  Just buy a sensor place is somewhere and it is always working.

The piece of mind of knowing that you are breathing fresh air or when to turn on your air filter actually allows you to worry less about air quality.

[connda]

I don't need a meter to tell the difference between the smoke from Feb through May and the air quality now.  I drive down the road and look at the mountains.  Clear as a bell right now.  Will be until next February.