|1||Uthai, Phra Nakhon Si Ayutthaya|
|2||Bang Na, Bangkok|
|3||Hua Hin, Prachuap Khiri Khan|
|4||Bangkok Yai, Bangkok|
|5||Khlong Sam Wa, Bangkok|
|6||Lat Krabang, Bangkok|
|7||Khan Na Yao, Bangkok|
|8||Pom Prap Sattru Phai, Bangkok|
|9||Bang Bon, Bangkok|
(local time)SEE WORLD AQI RANKING
12:34, Dec 2
live AQI index
|Air pollution level||Air quality index||Main pollutant|
|Moderate|| 63 US AQI||PM2.5|
PM2.5 concentration in Watthana is currently 3.6 times the WHO annual air quality guideline value
|Close your windows to avoid dirty outdoor air|
|Sensitive groups should reduce outdoor exercise|
|Tuesday, Nov 29|
Unhealthy for Sensitive Groups 112 US AQI
|Wednesday, Nov 30|
Moderate 86 US AQI
|Thursday, Dec 1|
Moderate 60 US AQI
Moderate 63 US AQI
|Saturday, Dec 3|
Unhealthy for Sensitive Groups 110 US AQI
|Sunday, Dec 4|
Unhealthy for Sensitive Groups 107 US AQI
|Monday, Dec 5|
Moderate 88 US AQI
|Tuesday, Dec 6|
Moderate 98 US AQI
|Wednesday, Dec 7|
Unhealthy for Sensitive Groups 128 US AQI
|Thursday, Dec 8|
Unhealthy for Sensitive Groups 127 US AQI
Interested in hourly forecast? Get the app
The air in Watthana has shown many fluctuations in its pollution level readings, split between air quality ratings that come in as 'good', which requires a US AQI reading of anywhere between 0 to 50 to be classified as such, and higher US AQI readings such as 157, taken in late December of 2022. This reading would place Watthana into the 'unhealthy' air quality rating bracket, which as the name suggests, is very much detrimental to the health of the citizens within Watthana. This is more prominent for those that fall into the vulnerable or at-risk groups of people, which will be discussed in further detail towards the end of the article. Regarding the US AQI readings, the figure is calculated by the present volumes of main air pollutants present in the air at any given time, with US AQI level being an aggregate of these pollutants, which will also be mentioned later in the article, for more information regarding which types of pollutants are present in the air throughout Watthana. So, whilst there are days present that show considerably better levels of air quality, even during periods of the year when the air quality is typically at its worst in Thailand (these are predominantly the latter months of the year, followed by the earlier months of the following year, with the middle months usually coming in with the better levels of air quality.
Naturally, this can be subject to many variables, with certain cities and provinces deviating from this pattern entirely). During bouts of higher air pollution, which were recorded in late December, and continue to crop up during late January of 2022 (with US AQI readings of 75 coming in on the last day of January, with the PM2.5 reading being at a concentration of 23.4 μg/m³, some 4.7 times higher than the World Health Organization's (WHO's) guideline for safe annual exposure levels. With pollution levels fluctuating, and Watthana indeed being subject to higher levels of pollution, preventative measures can be employed to lessen the damaging (and sometimes devastating) health effects that can be sustained from acute or prolonged exposure to the myriad of different air pollutants present in Watthana, as well as surrounding regions, which will typically see a similar pattern with their US AQI and PM2.5 readings. Preventative measures such as wearing fine particle filtering masks, avoiding outdoor activities, if possible (particularly strenuous ones such as jogging, whereby far more pollution can enter the body due to increased respiration rate), and keeping windows and doors closed so that indoor air pollution levels do not rise too significantly. Air purifiers can also be utilized if available, and air quality levels can be effectively monitored on both this page, as well as on the AirVisual app, which shows both past readings, current air quality readings as well as forecasts for the coming days, all of which can aid greatly in knowing when the air quality will be less appreciable.
Higher levels of air pollution in Watthana are caused by many different sources that are prevalent throughout all of the satellite cities, or cities belonging to the greater Bangkok region. With a densely populated and very busy capital city, there is naturally a large amount of industrial activity taking place, along with a huge tourist industry, although this has changed significantly since the advent of the post-2020 coronavirus fallout. Nevertheless, transportation and movement throughout Watthana remain prevalent, with many people commuting in and out of the city daily. This can lead to large amounts of certain pollutants accumulating within the cities limits, with certain areas such as busy roads or motorways, as well as other areas where rush hour traffic may accumulate or bottleneck into one small area, seeing significantly higher levels of smoke, haze and other dangerous forms of pollution such as fine particulate matter (also used in the calculation of the US AQI reading).
Other causes of decreased air quality include polluting clouds being blown over from other neighboring regions and getting trapped within the urban landscape (tall buildings with many car filled roads in between them, combined with a lack of strong wind to blow air pollution away can lead to significant buildups in cities due to this reason). Further reasons include emissions given off by factories and power plants, many of which burn through copious amounts of fuels, in particular fossil fuels such as diesel, natural gas and coal contributing the most to air pollution. Larger freight vehicles moving in and out of the city can also contribute, with even the wear and tear of their tire treads (along with other smaller vehicles also doing the same) causing many tons of microscopic rubber particles to enter into the air, as well as polluting bodies of water or settling on topsoil, which can have many other environmental consequences.
As mentioned, the pollutants used to calculate the US AQI reading will be mentioned, and they are nitrogen dioxide, carbon monoxide, sulfur dioxide, ozone (or smog as it is more commonly known, often seen accumulating in visible clouds over busy roads) along with PM10 and PM2.5, with the latter one being the far more dangerous of the two. Its minute size of 2.5 micrometers or less in diameter enables it to enter into the lungs and from there cross the blood barrier. With a myriad of dangerous materials being lodged both within the lungs and in the circulatory system, naturally many ill health effects can occur as a result. Other pollutants include black carbon, finely ground silica dust and other ultrafine particles such as oil or liquid vapors, mold, metals as well as nitrates and sulfates. Volatile organic compounds (VOCs) can also arise from combustion sites along with black carbon, with some examples of VOCs being methylene chloride, benzene and formaldehyde.
Whilst it is not as harshly polluted as other cities throughout Thailand, there may be negative health consequences for those that live within Watthana, particularly if they are in the vulnerable demographic or live in higher risk areas such as near busy roads or near factories or industrial areas. As such, Watthana is not overtly dangerous to live in, and with correct preventative measures being utilized during bouts of higher pollution, instances of ill health, both acute and chronic, can be lessened by a significant amount.
Groups that remain at higher risk of succumbing to pollution-related illnesses and premature deaths include the elderly, those with pre-existing health conditions, and those with compromised immune systems. Others that fall into the at-risk demographic include babies, young children, pregnant women as well as those with a hypersensitive disposition towards certain chemical pollutants or fine particles.
Data sources 3