Key facts
What to do
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Before you go
Check
- Open Air4Thai and identify the station before reading the number.
- Read the measurement time, pollutant, unit and AQI category together.
- Do not substitute a PM2.5 concentration for the AQI.
- Do not describe one nearby Chon Buri station as a Pattaya-wide condition.
- Follow the current official category guidance.
Avoid
- Using a historical Pattaya monthly average as today's reading.
- Sharing an AQI screenshot without its station or timestamp.
- Calling a PM2.5 concentration the AQI number.
- Treating a nearby Chon Buri station as proof of every Pattaya location.
What the Pattaya history establishes
Pattaya City's dataset includes monthly PM2.5 average, minimum, maximum and exceedance-day fields for parts of 2024 and 2025. Some recorded months contain non-zero exceedance-day counts. That supports a careful answer: Pattaya can be affected by elevated PM2.5.
It does not establish that Pattaya is always polluted, describe today's air, measure every neighborhood or prove an individual's indoor exposure. Keep historical context separate from a live decision.
Read an Air4Thai result in five checks
Open Air4Thai and check the station name first. Then read the displayed measurement time, pollutant, unit and AQI category. Preserve those five pieces together whenever using the result.
A screenshot without a station or timestamp can become misleading quickly. A result from a Chon Buri monitor is that station's result; it is not automatically a Pattaya-wide measurement. A page can load successfully while showing an older reading. Check that the displayed time is recent enough for the decision; do not assume opening the app refreshes the observation.
Do not confuse AQI with PM2.5 concentration
AQI and PM2.5 are related but not interchangeable numbers. PCD explains that Air4Thai's AQI is a unitless index derived from pollutant sub-indices, while PM2.5 concentration is reported with a physical unit such as micrograms per cubic meter.
When a number is quoted, label whether it is AQI or a pollutant concentration and include the observation period shown by the source. Do not copy a PM2.5 concentration and call it the AQI.
Use the current category, not a static health verdict
Air4Thai currently presents five bands: 0–25, 26–50, 51–100, 101–200 and 201+. Read the official label and guidance shown for the selected station and current band rather than relying on a memorized color or an old article.
This page does not reproduce detailed medical instructions or interpret an individual's health risk. Follow the current official category guidance, and use qualified medical advice for personal conditions.
Keep geography and time attached to the answer
Air4Thai reports station-specific results rather than one Pattaya-wide reading. Keep the station name and observation time attached to any current result, and do not turn a nearby Chon Buri station value into a citywide Pattaya claim.
Use the city dataset for dated historical context and Air4Thai for the current station result. Never combine a historical monthly average and a live AQI into one unlabeled figure.
Dates, responsibility & checking method
Evidence
Sources
5 dated records support the material facts on this page.
- Pattaya PM2.5 combined dataset (opens in a new tab)
Pattaya Cityofficial governmentChecked
- Air4Thai live monitoring application (opens in a new tab)
Pollution Control Departmentofficial governmentChecked
- Air4Thai AQI information (opens in a new tab)
Pollution Control Departmentofficial governmentChecked
- Difference between AQI and PM2.5 in Air4Thai (opens in a new tab)
Pollution Control Department, Environmental Office 8official governmentPublished Checked
- Air4Thai service capabilities (opens in a new tab)
Pollution Control Department, Environmental Office 14official governmentPublished Checked