13 – 19 Nov 2024 · Thailand · Wednesday to Tuesday, UTC+7

Thailand weekly air quality

Modelled US AQI · 8 cities · CAMS via Open-Meteo

65.1Weekly mean modelled AQI · Moderate

Mean PM2.5: 15.3 µg/m³. Both means cover the selected cities hour by hour. They are not a national average or Thailand’s official index.

+4.7 AQI compared with the previous week’s mean of 60.4.

Highest hourly estimate: 214 in Bangkok · 13 Nov, 18:00 GMT+7.

1344 of 1344 city-hours have a modelled AQI. These are estimates for roughly 45 km model grid cells, not monitoring-station measurements. How this report is made

Daily modelled US AQI

Day	Mean AQI	Low–high	Mean PM2.5 (µg/m³)	City-hours
Wed, 13 Nov	76.8Moderate	24–214	20.1	192 / 192
Thu, 14 Nov	69.5Moderate	34–201	16.4	192 / 192
Fri, 15 Nov	63.4Moderate	36–168	13.5	192 / 192
Sat, 16 Nov	64Moderate	40–211	13.8	192 / 192
Sun, 17 Nov	60.8Moderate	29–201	13.7	192 / 192
Mon, 18 Nov	60.9Moderate	41–155	15.1	192 / 192
Tue, 19 Nov	60.5Moderate	38–104	14.4	192 / 192

Hourly means (UTC+7)

Each cell averages the selected cities’ modelled AQI for that hour.

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	65	66	67	68	68	69	70	71	71	72	73	73	73	74	74	76	85	94	98	98	93	88	82	75
Thu	72	70	69	68	68	67	67	66	66	66	65	65	65	65	65	65	68	77	82	82	78	75	70	66
Fri	64	63	62	62	62	62	62	62	61	61	60	60	60	60	60	61	62	68	74	75	72	69	65	60
Sat	58	58	58	58	58	58	58	59	59	59	59	60	60	59	61	62	71	81	84	81	76	72	68	63
Sun	57	56	55	55	54	54	54	53	53	53	53	53	53	54	56	60	71	80	83	82	78	73	66	57
Mon	57	58	58	59	59	59	59	59	60	60	60	60	60	61	60	60	62	66	69	68	65	61	60	61
Tue	61	62	62	62	62	61	61	61	61	60	60	59	59	59	59	59	61	63	63	62	60	59	59	58

Cities by modelled US AQI

Sorted by weekly mean. Each city is a single model grid cell near its centre.

City	Mean AQI	Peak AQI	Mean PM2.5 (µg/m³)	Hours
Bangkok	122.3Unhealthy for Sensitive Groups	214	35.5	168 / 168
Chiang Mai	80.6Moderate	155	23.6	168 / 168
Pattaya	61.9Moderate	131	12.4	168 / 168
Khon Kaen	56.1Moderate	76	11.3	168 / 168
Chiang Rai	52.4Moderate	72	11.2	168 / 168
Phuket	52.1Moderate	99	9.9	168 / 168
Nakhon Ratchasima	50.1Moderate	87	9.5	168 / 168
Hat Yai	45.5Good	56	8.9	168 / 168

City-hours by category

Good: 415

Moderate: 811

Unhealthy for Sensitive Groups: 86

Unhealthy: 21

Very Unhealthy: 11

Hazardous: 0

US AQI scale
AQI	Category
0–50	Good
51–100	Moderate
101–150	Unhealthy for Sensitive Groups
151–200	Unhealthy
201–300	Very Unhealthy
301+	Hazardous

How this report is made

Open-Meteo provides hourly estimates from the Copernicus Atmosphere Monitoring Service (CAMS) global model at roughly 45 km resolution. We use the grid cell nearest each city’s centre. Nearby places may share a cell, and local pollution can differ.

The AQI is the provider’s modelled US AQI across pollutants, one value per city per hour. Weekly, daily and hourly means average those values across the selected cities. PM2.5 is a concentration in µg/m³. These figures use a different basis from the measured PM2.5-derived AQI in the Malaysia and Singapore reports.

Days and hours use UTC+7. The report includes past model hours only, never forecasts. The previous-week comparison appears only when at least 90% of that week’s city-hours are available.

For official local readings and advice, visit Pollution Control Department · Air4Thai. Air-quality data: Open-Meteo and CAMS, licensed under CC BY 4.0. Haze Monitor is independent of these providers and local authorities.

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	65	66	67	68	68	69	70	71	71	72	73	73	73	74	74	76	85	94	98	98	93	88	82	75
Thu	72	70	69	68	68	67	67	66	66	66	65	65	65	65	65	65	68	77	82	82	78	75	70	66
Fri	64	63	62	62	62	62	62	62	61	61	60	60	60	60	60	61	62	68	74	75	72	69	65	60
Sat	58	58	58	58	58	58	58	59	59	59	59	60	60	59	61	62	71	81	84	81	76	72	68	63
Sun	57	56	55	55	54	54	54	53	53	53	53	53	53	54	56	60	71	80	83	82	78	73	66	57
Mon	57	58	58	59	59	59	59	59	60	60	60	60	60	61	60	60	62	66	69	68	65	61	60	61
Tue	61	62	62	62	62	61	61	61	61	60	60	59	59	59	59	59	61	63	63	62	60	59	59	58

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	65	66	67	68	68	69	70	71	71	72	73	73	73	74	74	76	85	94	98	98	93	88	82	75
Thu	72	70	69	68	68	67	67	66	66	66	65	65	65	65	65	65	68	77	82	82	78	75	70	66
Fri	64	63	62	62	62	62	62	62	61	61	60	60	60	60	60	61	62	68	74	75	72	69	65	60
Sat	58	58	58	58	58	58	58	59	59	59	59	60	60	59	61	62	71	81	84	81	76	72	68	63
Sun	57	56	55	55	54	54	54	53	53	53	53	53	53	54	56	60	71	80	83	82	78	73	66	57
Mon	57	58	58	59	59	59	59	59	60	60	60	60	60	61	60	60	62	66	69	68	65	61	60	61
Tue	61	62	62	62	62	61	61	61	61	60	60	59	59	59	59	59	61	63	63	62	60	59	59	58

Day	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Wed	65	66	67	68	68	69	70	71	71	72	73	73	73	74	74	76	85	94	98	98	93	88	82	75
Thu	72	70	69	68	68	67	67	66	66	66	65	65	65	65	65	65	68	77	82	82	78	75	70	66
Fri	64	63	62	62	62	62	62	62	61	61	60	60	60	60	60	61	62	68	74	75	72	69	65	60
Sat	58	58	58	58	58	58	58	59	59	59	59	60	60	59	61	62	71	81	84	81	76	72	68	63
Sun	57	56	55	55	54	54	54	53	53	53	53	53	53	54	56	60	71	80	83	82	78	73	66	57
Mon	57	58	58	59	59	59	59	59	60	60	60	60	60	61	60	60	62	66	69	68	65	61	60	61
Tue	61	62	62	62	62	61	61	61	61	60	60	59	59	59	59	59	61	63	63	62	60	59	59	58