When is Thailand's air quality worst for golf?

February to April is burning season. Northern Thailand (Chiang Mai, Chiang Rai) gets hazardous levels. Bangkok is elevated December to February. Southern Thailand stays clean year-round.

Does bad air quality affect my golf game?

Yes. Above AQI 100, studies show reduced aerobic capacity, faster fatigue, and impaired concentration. You'll feel it on the back 9.

Where can I play golf in Thailand with clean air?

Coastal courses — Hua Hin, Phuket, Koh Samui, Pattaya — have clean air year-round thanks to sea breezes. They're the safest bet during burning season.

Should I Play Golf Today?

Q: What AQI is safe for playing golf?

AQI 0–50 is ideal. 51–100 is fine for most people. Above 100, consider skipping — you'll be breathing hard for 4+ hours outdoors. Above 150, don't play.

You checked the weather, booked a tee time, and now the sky looks hazy. This guide helps you read the air quality numbers and make a quick, confident decision.

The quick answer

Thailand uses the Air Quality Index (AQI) — a number from 0 to 500. Here's what it means for your round:

Play

AQI 0–50

Clean air. No restrictions. Enjoy your round without any concerns.

Caution

AQI 51–100

Most golfers are fine. If you have asthma or lung issues, consider a shorter round or early tee time.

Skip it

AQI 100+

Reschedule or move to a coastal course. You'll breathe hard for 4+ hours — that's a lot of polluted air.

Full AQI scale

0–50

Good

51–100

Moderate

101–150

Unhealthy (sensitive)

151–200

Unhealthy

201–300

Very Unhealthy

301–500

Hazardous

For golfers, the threshold that matters is AQI 100. Above that, you're inhaling 6–8× more pollutants than someone sitting indoors.

What's actually in the air?

The number you see is driven by PM2.5 — tiny particles smaller than 2.5 micrometers. Here's how small that is:

How small is PM2.5?

Things you'll find on a Thai golf course

Bermuda Grass

~2 mm wide

Bunker Sand

~0.09 mm

you breathe this

PM2.5

0.0025 mm

800× smaller

You can see every blade of grass on the fairway — but PM2.5 is 800× thinner. Breathing hard for 4+ hours means invisible particles go deep into your lungs.

4–5 hours outside

A full round is far longer than jogging or cycling. More time = more exposure.

Heavy breathing

Exercise increases your air intake from ~12 to ~100 liters per minute. That's 8× more pollutants per breath.

Thailand's heat

35°C+ makes you breathe even harder. Heat and pollution compound each other.

Valley courses trap haze

Many Thai courses sit in valleys or basins where pollution accumulates and lingers.

When and where it gets bad

Thailand's air quality varies dramatically by region and month. The culprit: burning season — agricultural fires across northern Thailand and neighboring countries, peaking February to April.

Region	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
North Chiang Mai, Chiang Rai	150+	300+	300+	150+	80	30	25	25	25	30	80	120
Central Bangkok, Khao Yai	110	120	80	70	40	25	20	20	25	30	75	100
South & Coast Phuket, Hua Hin, Pattaya	30	35	35	30	25	20	20	20	20	25	25	30

Good (0–50)Moderate (51–100)Unhealthy-ish (101–150)Unhealthy (151–200)Hazardous (200+)

Side-by-side: clear day vs haze on a Thai golf course

Same course, different days. Left: AQI 25 — Right: AQI 180+

Burning season (Feb–Apr)

Agricultural fires push AQI above 300 in the north. Chiang Mai regularly becomes the world's most polluted city. If you're visiting Feb–Apr, book coastal courses instead.

Rainy season = clean air (Jun–Oct)

Monsoon rains wash the air clean nationwide. AQI stays under 50 everywhere. Brief afternoon showers are manageable with early tee times — best air quality of the year.

What you can do about it

Five practical things — ranked from most to least effective.

Check AQI before you book

Every course page on SawadeeGolf shows real-time AQI updated every 2 hours. Check it the morning of your round — conditions can change overnight.

Play early morning

AQI is typically lowest between 6–8am. Book the earliest tee time available. You'll finish before both the pollution and the heat peak.

Choose coastal courses during burning season

Sea breezes keep Hua Hin, Phuket, Pattaya, and Koh Samui clean year-round. If you're visiting Feb–Apr, head to the coast.

Hydrate more than usual

Pollution compounds dehydration. Drink 50% more water than you normally would. If you feel a scratchy throat, headache, or unusual fatigue — stop playing.

Use the cart, breathe through your nose

Ride between holes to reduce exertion. Nasal breathing filters more particles than mouth breathing. Small adjustments, meaningful difference.

Common questions

What AQI is safe for playing golf?

AQI 0–50 is ideal. 51–100 is fine for most healthy adults. Above 100, it's not worth the risk — especially for a 4–5 hour round. Above 150, stay indoors.

Does bad air actually affect my game?

Yes. Studies show AQI above 100 reduces aerobic capacity by 5–10%, impairs concentration, and increases fatigue. You'll feel it on the back 9 — slower recovery between shots, more mental errors.

Should I wear a mask while playing?

N95 masks filter PM2.5, but they're impractical during physical activity — they restrict breathing and fog up glasses. If the air is bad enough to need a mask, it's better to skip the round entirely.

Where in Thailand has clean air year-round?

Coastal areas: Hua Hin, Phuket, Koh Samui, and Pattaya. Sea breezes keep AQI consistently under 50. These are your safest options during burning season (Feb–Apr).

Check your course now

Real-time AQI for every golf course in Thailand. Updated every 2 hours. Free.

Check Air Quality UV Index Guide