Bangkok PM2.5 air quality averaged 23.3 micrograms in 2022. This means Bangkok PM2.5 concentrations exceeded the WHO annual limit of 5.0 micrograms by a little under 5 times. On the most polluted day, Bangkok air quality exceeded the recommended limit by a little under 20 times.
Current Air Quality in Bangkok
Air Quality Map
Live Bangkok, Thailand AQI air quality map updated hourly.
How is the Air Quality in Bangkok, Thailand?
99% of Days in Bangkok More Polluted Than WHO Target
During 2022, 99% of days exceeded the WHO annual limit. 1% of days fell within the safe limit of 5 micrograms. That means outdoor air in Bangkok was considered safe for just 1 in 12 days during 2022.
The most polluted day in 2022 was 10 Apr 2022, where PM2.5 concentrations were as high as 99.0 micrograms. On this day, PM2.5 pollution exceeded the recommended limit by a little under 20 times.
Bangkok PM2.5 Concentrations: 2023 – Year to Date
So far in 2023, Bangkok’s PM2.5 concentrations have averaged 28.4 micrograms. That’s 22% higher than the previous year.
Is Bangkok Air Quality Improving?
Historical air quality (AQI) data for Bangkok over the past 4 years (2019, 2020, 2021 and 2022) shows that air quality has ever so slightly worsened. This shows a worrying trend for air quality in Bangkok.
Thursday is the Most Polluted Day of the Week in Bangkok
Thursdays are the most polluted day of the week in Bangkok. PM2.5 levels on an average Thursday reach 28.2 micrograms. That’s 8% higher than the least polluted day – Monday. On Monday, PM2.5 air pollution averages 26.2 micrograms.
On average, Thursdays see PM2.5 pollution that’s a little under 6 times the WHO limit. For Mondays – the least polluted day – PM2.5 air pollution is over 5 times.
Why Is Bangkok Air Quality Bad Today?
Weather plays a big role in how Bangkok air quality is each day. Heat and sunlight help create ozone. That’s why ozone pollution is higher during the day and during hotter months. Studies show rain can reduce PM2.5 air pollution a little, but strong winds usually reduce PM2.5 much more.
Research has found that PM2.5 around the world follows a daily pattern. Of course, any particular day can be an exception. However, across continents, PM2.5 pollution tends to be worse from 8pm to 2am, with another bad spike around morning rush hour. PM2.5 is the lowest around 4pm, when air tends to mix higher in the atmosphere.
Bangkok Air Pollution: The Negative Health Effects
Many people know that air pollution causes lung cancer and asthma. But fewer people know that air pollution kills far more people through our hearts and blood vessels.
Studies have shown that PM2.5 raises blood pressure, inflammation, and rates of heart attacks and strokes.
WATCH: Why Is PM2.5 So Harmful to Us?
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Protect Your Health in Bangkok From Air Pollution
Despite the harms of PM2.5 air pollution, studies of air purifiers have found that removing particulate in the home lowers blood pressure, reduces inflammation, and improves immune response.
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