Toxic air pollution clouded Bangkok this morning as the country's hopelessly inefficient army government fail to prevent the illegal crop fires that are harming residents and the environment.

Footage from the Huai Khwang area of the city shows the thick smog haze enveloping buildings. Levels of the harmful PM2.5 particles in the air soared to more than 100 micrograms per cubic metres.

The Air Visual app from IQAir gave Bangkok a dangerous rating of 180 - one of the highest in the world - and far past the safe levels of 5 and under found in developed western countries.

Bungling government chiefs - notorious for their endemic corruption - have failed to tackle the fires, which speed up the agricultural process demanded by the country's food conglomerates.

Scientists found that smog is at its worst in the country when farmers burn waste crops to cheaply clear their land between late October and April. This is combined with high numbers of polluting cars on the road and large construction projects across the capital.

The seasonal lack of wind and rain, combined with a winter low-pressure system in which cold air is trapped closer to the ground by warm air above – prevent the pollution from being dispersed naturally.

The Thai government has been criticised for failing to tackle the country's air pollution crisis, with bizarre measures such as spraying water into the air and giant purifiers having no impact.

Data scientist engineer Worasom Kundhikanjana said: 'PM 2.5 pollution has a seasonal trend in Bangkok and the northern provinces, but has only recently received public attention. During this winter haze, the harmful particle pollution level is high throughout the day, including on weekends.

'Unfortunately, spraying water into the air does not appear to be effective, since the volume of water is minuscule compared to actual rain.

'With the start of the monsoon season, the weather in Bangkok will get better, and public attention on this issue will likely fade. However, without immediate policy measures, the problem will come back again next winter.'