Real-time PM2.5 Air Quality in Thailand

Updated: February 10, 2026 at 9:00 PM

Find the nearest DustBoy air quality monitor and check live PM2.5 levels in your area.

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PM2.5 Snapshot

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Northern

Lamphun

⚠ 4 stations with PM2.5 ≥37.6µg/m³, affects health

Chiang Rai

⚠ 11 stations with PM2.5 ≥37.6µg/m³, affects health

Chiang Mai

⚠ 16 stations with PM2.5 ≥37.6µg/m³, affects health

Mae Hong Son

⚠ 1 stations with PM2.5 ≥37.6µg/m³, affects health

Phrae

⚠ 1 stations with PM2.5 ≥37.6µg/m³, affects health

Central

Nonthaburi

⚠ 32 stations with PM2.5 ≥37.6µg/m³, affects health

Uthai Thani

⚠ 4 stations with PM2.5 ≥37.6µg/m³, affects health

Frequently Asked Questions (FAQ)

What is PM2.5 and why is it dangerous?

PM2.5 refers to fine particulate matter with a diameter of 2.5 micrometers or less. These tiny particles can penetrate deep into the lungs and bloodstream, causing respiratory issues, heart disease, and other health problems. Monitoring PM2.5 levels helps you make informed decisions about outdoor activities.

How can I check PM2.5 near me and today’s dust level?

Click the "PM2.5 Near Me" button on PM2.5NearMe to find the nearest DustBoy station and show real-time readings with daily updates.

What are the AQI and 24-hour PM2.5 ranges?

24-hour average ranges (Thailand)

AQI PM2.5 24h (µg/m³) PM10 24h (µg/m³) Category
0–25 0–15.0 0–50 Very good
26–50 15.1–25.0 51–80 Good
51–100 25.1–37.5 81–120 Moderate
101–200 37.6–75.0 121–180 Health impact
>200 >75.1 >180 Very unhealthy

PM2.5 and PM10 units: µg/m³ (24-hour average).

What precautions should I take at each air-quality level?

Precautions by air-quality level (summary)

  • AQI 0–25 Very good

    Excellent air quality. Suitable for outdoor activities and travel.

  • AQI 26–50 Good

    Good air quality. Normal outdoor activities are fine.

  • AQI 51–100 Moderate

    [General public] Normal outdoor activities are fine.

    [Sensitive groups] If symptoms occur (cough, breathing discomfort, eye irritation), reduce time outdoors.

  • AQI 101–200 Health impact

    [General public] Monitor symptoms; reduce outdoor time or wear protection if needed.

    [Sensitive groups] Reduce outdoor time or use protection if needed. If symptoms such as cough, breathing difficulty, chest tightness, headache, irregular heartbeat, nausea, or fatigue occur, seek medical care.

  • AQI >200 Very unhealthy

    Everyone should avoid outdoor activities and high-pollution areas. Use protection if necessary and seek medical care if symptoms occur.

How often is air quality data updated?

DustBoy sensor data is updated hourly, providing near real-time air quality monitoring across Thailand.