Phuket, Thailand · Air pollution monitor
Live US AQI on the EPA scale, fine particles, and the history behind today’s reading.
Phuket local time
Asia/Bangkok · UTC+7
The latest recorded Phuket air quality is US AQI 34 · Good, with PM2.5 of 6.3 µg/m³ at . Readings update every two minutes; check the freshness label below. Look up a past date.
The air is part of your stay.
Loading the current AQI illustration…
Current fine-particle pollution, based on recent observations in Phuket.
Indicative PM2.5 AQI. The highest two fresh observations inform this pollution-focused reading.
How it’s calculated ↓The air behind the view
Blue water is no measure of PM2.5. Check the recorded air quality for the dates that matter to you.
124 of 181 complete days Not Good · AQI above 50
1 Nov 2025 – 30 Apr 2026.
Good is AQI 0–50. Not Good means above that range: Moderate (51–100) or worse. This view defines high season as November–April. 0 missing or partial days are excluded from this count.
Explore this seasonBeyond the view
Particle pollution can aggravate asthma and is linked to heart attacks, reduced lung function and premature death in people with heart or lung disease.
What the evidence shows →Exposure over hours or days can affect health. For residents and repeat visitors, the pattern across months and years matters too. One green reading cannot describe an entire stay.
Short visits and longer stays →Many hotel air conditioners cool a room without effectively filtering fine particles. Ask about suitable particle filtration, and check the AQI before strenuous outdoor plans.
Practical ways to reduce exposure →“Good” is an AQI category, not a promise of zero pollution. Moderate air (51–100) is acceptable for most people, but unusually sensitive people can be affected. Understand the categories and WHO guidelines.
Beyond today’s reading
Not Good means outside the US AQI Good range: above 50, or Moderate and worse. Explore the air during your stay.
Loading the archive…
Daily PM2.5 converted to US AQI · Phuket time
Gaps mean no observations. Color follows AQI continuously; category names use fixed boundaries. Moderate means AQI 51–100. Daily records with limited hours are labelled partial. Select a day below to see its coverage.
Squares show AQI by default. Switch to PM2.5 or select a day.
A closer look
Daily detail includes the covered hours, particle concentration, and whether the record is complete.
| Date | AQI | PM2.5 (µg/m³) | Covered hours | Record |
|---|
Before you plan your stay
No. A tropical coastline does not guarantee low particle pollution. The recorded Phuket history includes Not Good days—outside the US AQI Good range, which ends at 50. Check the timestamped reading for current conditions and the dated records for a longer view.
Compare Phuket air quality by month →High season is a travel period, not an air-quality category. Our November–April summary counts complete recorded Not Good days (AQI above 50) and shows the exact dates and coverage. It describes the observed season; it cannot predict the air during a future trip.
See the recorded high-season results →Apps can use different sensors, pollutant corrections, averaging periods and AQI scales. This site averages the two highest fresh Phuket PM2.5 concentrations, then applies its original US-scale conversion. It is a pollution-focused indicator, not an island-wide average or an official EPA NowCast.
Read the calculation and its limits →Clarity comes first
Useful air quality information starts with knowing how it’s measured.
At each update, we select Phuket observations no more than two minutes old and average the two highest PM2.5 readings. The same calculated reading is saved to history. Older readings are marked as last known.
Return to the latest AQI ↑We use the US EPA scale, not Thai AQI. The two highest fresh PM2.5 observations are averaged before conversion; one is used if only one is fresh. This indicator follows the site’s original PM2.5 formula and is not an island-wide average or an official EPA NowCast.
Understand the US EPA scale ↗Daily records use Phuket dates (UTC+7). The archive combines provider hourly records with saved two-minute calculated readings from this update onward. Longer periods average daily PM2.5, then convert that concentration to AQI. Not Good means AQI above 50 (Moderate or worse); these percentages count complete days only.
Explore the archive ↑The US EPA AQI scale
For PM2.5 particle pollution. Higher numbers mean greater health concern. Good ends at AQI 50, corresponding to 9 µg/m³.
History and live data can use different provider processing. Older uncorrected sensor inputs may not be available, and the contributing station mix changes over time. Read long-term comparisons with those limits in mind.
Yes. The 2024 PM2.5 AQI update lowered the upper concentration for the Good category from 12 to 9 µg/m³. Our displayed scale uses that 9 µg/m³ boundary. The change did not make the US and European scales identical: thresholds, averaging periods, and pollutants still differ. Read the EPA’s 2024 AQI update ↗
AQI scales differ by country and organisation. The same PM2.5 concentration can produce a different number or category, and an index may include other pollutants or a different averaging period. This site keeps its headline and history on the US EPA scale so comparisons use one reference. For continuity, we retain the original PM2.5 conversion, including a small interpolation difference near the Unhealthy boundary and values above 500. These are indicative readings, not official EPA reports.
No. The current estimate describes recent PM2.5 sensor observations. History uses the mean concentration across observed hours on each Phuket calendar day, converted to AQI. Saved two-minute calculated readings build each local hourly mean; provider hourly records supply earlier history and gaps. They cover different time periods and should not be compared as identical measures.
A sensor may be offline, a source may not retain that date, or collection may not yet have started. We never fill missing days with estimated or invented readings. A complete record is a closed Phuket day with at least 18 of 24 covered hours. A locally recorded hour needs at least 23 of its 30 two-minute samples to count as covered. Today and days below the daily threshold are partial. Partial and missing days never count as clean.
Use it as one input, alongside nearby conditions, your health needs, and official local advice. A historical pattern is not a forecast. Community sensors and a PM2.5-only index have limitations; conditions can differ across Phuket.
Data provided by AirGradient and contributors (CC BY-SA 4.0); Sensor.Community (DbCL v1.0, ODbL database terms); and Air4Thai via OpenAQ (original provider terms). We aggregate observations and calculate AQI. Independent community information; not an official government service.
AirGradient contributors include Be Leaf Boutique Resort and Meechai Bamboo Schools. Provider licenses apply to their respective source data; no single license is claimed for all observations. Health guidance: US EPA AirNow ↗