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Chiang Mai Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in Chiang Mai

Last Updated: 2025-07-20 01:55:08 PM (Local Time)

location image
Live AQI
61
Air Quality is
Moderate
pm10 :  72 µg/m³
PM2.5 :  9 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi moderate level.webp in Chiang Mai
partly cloudy

31 °C

Partly cloudy
Humidity
Humidity63 %
Wind Speed
Wind Speed8 km/h
UV Index
UV Index12
Last Updated: 2025-07-20 01:55:08 PM (Local Time)
Map

Chiang Mai

Major Air Pollutants

Chiang Mai

PM2.5's Icon

Particulate Matter(PM2.5)

9µg/m³

PM10's Icon

Particulate Matter(PM10)

72µg/m³

CO's Icon

Carbon Monoxide(CO)

78ppb

SO2's Icon

Sulfur Dioxide(SO2)

1ppb

NO2's Icon

Nitrogen Dioxide(NO2)

8ppb

O3's Icon

Ozone(O3)

14ppb

Trending in Thailand

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AQI Graph

Historical Air Quality Data

Chiang Mai

24 Hours
AQI
Chiang Mai
AQI
.
19-07-2025Time20-07-2025
43
Min.at 9:09 AM on 20th Jul
59
Max.at 12:09 AM on 20th Jul

Want air quality data?

Download 2024 Annual Data

World Air Quality Report

Globe

AQI Trends - Annual Air Quality Changes

Chiang Mai, Chiang Mai, Thailand

AQI
Year
.
AQI

Annual AQI Trends

2020
63AQI
2021
77AQI
22%
Rise
2022
74AQI
-4%
Fall
2023
97AQI
31%
Rise
2024
91AQI
-6%
Fall
2025
86AQI
-5%
Fall
Overall Annual Percentage (%) change of AQI in (2020 to 2025)
8%
Rise (Worsened AQI)

Most & Least Polluted Months

Most PollutedApril, 2023195AQI
Least PollutedJune, 202033AQI

* This data analysis is from year 2020 - 2025

Chiang Mai's Locations

Real-time Air Pollution Level

Location
Status
AQI
PM2.5(µg/m³)
PM10(µg/m³)
Temp.(°C)
Humi.(%)
Moderate
67
7
89
32
29
Moderate
52
10
51
30
48
Moderate
68
10
90
31
27
Moderate
58
13
32
29
68
Moderate
58
13
32
29
68
Moderate
68
10
90
31
27
Moderate
55
10
63
30
29
Good
42
7
41
32
49
Moderate
56
12
38
30
48
Moderate
55
11
51
30
48
Moderate
68
10
90
31
27
Moderate
54
9
63
30
26
Moderate
68
10
90
31
27
Moderate
78
10
110
30
23
Moderate
78
10
110
32
23
Moderate
52
10
51
30
46
Moderate
64
8
82
31
34
Good
42
7
41
32
49
Moderate
80
9
113
32
21
Moderate
58
13
47
30
63
Moderate
55
11
38
30
46
Moderate
66
8
85
32
23
Moderate
57
12
55
31
46
Moderate
55
10
63
30
34
Moderate
66
9
85
32
23
Moderate
66
7
85
32
23
Moderate
72
10
98
32
23
Moderate
55
10
65
30
30
Moderate
55
10
63
30
29
Moderate
55
10
63
30
29
Moderate
67
7
89
32
29
Moderate
64
8
82
31
34
Moderate
51
8
56
30
36
Moderate
55
8
63
30
34
Moderate
55
10
65
30
30
Moderate
53
8
61
30
35
Moderate
55
10
63
30
29
Moderate
80
9
113
32
21
Moderate
67
7
88
31
35
Moderate
67
7
88
31
35
Moderate
67
7
89
32
28
Moderate
67
7
89
32
28

Thailand's Metro Cities

Air Quality Index

Bangkok City AQI

Bangkok

41

temp.32°C
hum.59%
Chiang Mai City AQI

Chiang Mai

61

temp.31°C
hum.63%
Hat Yai City AQI

Hat Yai

52

temp.28°C
hum.84%
Hua Hin City AQI

Hua Hin

36

temp.30°C
hum.70%
Khon Kaen City AQI

Khon Kaen

47

temp.32°C
hum.59%
Nakhon Ratchasima City AQI

Nakhon Ratchasima

44

temp.30°C
hum.61%
Pattaya City City AQI

Pattaya City

43

temp.31°C
hum.59%
Phitsanulok City AQI

Phitsanulok

48

temp.31°C
hum.66%

Air Quality Calendar 2025

Chiang Mai

2025
AQI
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 Jan
91
2 Jan
89
3 Jan
87
4 Jan
91
5 Jan
96
6 Jan
104
7 Jan
108
8 Jan
111
9 Jan
125
10 Jan
113
11 Jan
94
12 Jan
88
13 Jan
92
14 Jan
96
15 Jan
95
16 Jan
89
17 Jan
90
18 Jan
89
19 Jan
90
20 Jan
102
21 Jan
115
22 Jan
112
23 Jan
116
24 Jan
109
25 Jan
97
26 Jan
95
27 Jan
103
28 Jan
85
29 Jan
104
30 Jan
118
31 Jan
94
February
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 Feb
95
2 Feb
92
3 Feb
101
4 Feb
114
5 Feb
116
6 Feb
105
7 Feb
108
8 Feb
115
9 Feb
100
10 Feb
93
11 Feb
101
12 Feb
96
13 Feb
91
14 Feb
88
15 Feb
91
16 Feb
112
17 Feb
111
18 Feb
112
19 Feb
110
20 Feb
106
21 Feb
98
22 Feb
100
23 Feb
94
24 Feb
82
25 Feb
79
26 Feb
70
27 Feb
73
28 Feb
75
March
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 Mar
77
2 Mar
77
3 Mar
91
4 Mar
105
5 Mar
129
6 Mar
113
7 Mar
122
8 Mar
105
9 Mar
97
10 Mar
87
11 Mar
94
12 Mar
95
13 Mar
85
14 Mar
98
15 Mar
125
16 Mar
129
17 Mar
150
18 Mar
133
19 Mar
126
20 Mar
100
21 Mar
129
22 Mar
142
23 Mar
155
24 Mar
152
25 Mar
148
26 Mar
136
27 Mar
149
28 Mar
154
29 Mar
159
30 Mar
162
31 Mar
152
April
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 Apr
140
2 Apr
137
3 Apr
131
4 Apr
125
5 Apr
119
6 Apr
108
7 Apr
92
8 Apr
86
9 Apr
94
10 Apr
111
11 Apr
97
12 Apr
90
13 Apr
81
14 Apr
75
15 Apr
73
16 Apr
70
17 Apr
70
18 Apr
67
19 Apr
69
20 Apr
72
21 Apr
75
22 Apr
81
23 Apr
84
24 Apr
99
25 Apr
109
26 Apr
107
27 Apr
100
28 Apr
87
29 Apr
81
30 Apr
73
May
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 May
71
2 May
66
3 May
62
4 May
66
5 May
63
6 May
73
7 May
72
8 May
76
9 May
82
10 May
86
11 May
84
12 May
72
13 May
66
14 May
63
15 May
54
16 May
54
17 May
56
18 May
53
19 May
55
20 May
58
21 May
58
22 May
60
23 May
55
24 May
51
25 May
49
26 May
49
27 May
50
28 May
45
29 May
47
30 May
48
31 May
48
June
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 Jun
46
2 Jun
46
3 Jun
59
4 Jun
69
5 Jun
69
6 Jun
71
7 Jun
66
8 Jun
61
9 Jun
61
10 Jun
55
11 Jun
49
12 Jun
49
13 Jun
50
14 Jun
50
15 Jun
48
16 Jun
45
17 Jun
49
18 Jun
54
19 Jun
54
20 Jun
56
21 Jun
57
22 Jun
55
23 Jun
56
24 Jun
59
25 Jun
60
26 Jun
62
27 Jun
62
28 Jun
62
29 Jun
64
30 Jun
67
July
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 Jul
69
2 Jul
65
3 Jul
65
4 Jul
64
5 Jul
66
6 Jul
63
7 Jul
61
8 Jul
62
9 Jul
63
10 Jul
65
11 Jul
65
12 Jul
62
13 Jul
61
14 Jul
60
15 Jul
59
16 Jul
60
17 Jul
59
18 Jul
57
19 Jul
56
20 Jul
-
21 Jul
-
22 Jul
-
23 Jul
-
24 Jul
-
25 Jul
-
26 Jul
-
27 Jul
-
28 Jul
-
29 Jul
-
30 Jul
-
31 Jul
-
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

Health Advice For People Living In

Chiang Mai

0Cigarettes per day

Weekly 0 Cigarettes
Monthly 0 Cigarettes

Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.

Source:

Berkeley Earth

Solutions for Current AQI

  • Air Purifier
    Air PurifierTurn On
  • Car Filter
    Car FilterMust
  • N95 Mask
    N95 MaskMust
  • Stay Indoor
    Stay IndoorMust

Must turn on the air purifier to enjoy fresh air.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Chiang Mai

  • asthma due to air pollution in Chiang MaiAsthma
  • heart due to air pollution in Chiang MaiHeart Issues
  • allergy due to air pollution in Chiang MaiAllergies
  • sinus due to air pollution in Chiang MaiSinus
  • flu due to air pollution in Chiang MaiCold/Flu
  • copd due to air pollution in Chiang MaiChronic (COPD)
asthma due to air pollution in Chiang Mai

Mid. Chances of Asthma

Asthma

Risk of Asthma symptoms is Mid. when AQI is Moderate (50-150)

Moderate symptoms including frequent wheezing, noticeable shortness of breath, chest tightness, and persistent cough.

Do's :

  • Limit outdoor activities when AQI is poor.

  • Clean indoor air with an air purifier to reduce exposure.

  • Soothe the respiratory tract with herbal teas or warm water to help alleviate symptoms.

Don'ts :

  • Exercise outdoors without a mask.

  • Stay in smoky areas with strong fumes.

Most Polluted Cities 2025

Thailand

Analyze the real-time most air polluted cities in the country.

Most Polluted Cities Live Ranking 2025
World's Most PollutedCity Rankings (2024)
World's Most PollutedCountry Rankings(2024)
RankCityAQIAQI Status

Standard Value

Follow

1.

Prachin Buri, Thailand

75
Moderate
5xabove Standard

2.

Mueang Pattani, Thailand

64
Moderate
4xabove Standard

3.

Doi Luang, Thailand

64
Moderate
4xabove Standard

4.

Pattani, Thailand

64
Moderate
4xabove Standard

5.

Ban Suan, Thailand

64
Moderate
4xabove Standard

6.

Chiang Mai, Thailand

61
Moderate
4xabove Standard

7.

Sadao, Thailand

59
Moderate
4xabove Standard

8.

Nakhon Pathom, Thailand

58
Moderate
4xabove Standard

9.

Ban Phru, Thailand

55
Moderate
4xabove Standard

10.

Kut Rang, Thailand

54
Moderate
4xabove Standard

Last Updated: 20 Jul 2025, 06:59 AM

AQI City Rankings

Air Quality Solutions For Chiang Mai

Explore the solutions of air quality monitoring & clean air.

Here are some applications that you can go through to find out the solutions.

Air Quality Monitor

Air Quality Monitor

Monitor the air quality
Air Quality Sensors

Air Quality Sensors

Sensors to measure the air quality
Fresh Air Machine

Fresh Air Machine

Clean the air you breathe
Car Cabin Filter

Car Cabin Filter

Purify the air in your car
N95 Mask

N95 Mask

Shield yourself from pollution
air quality solutions for offices for Chiang Mai

Air Quality Solution For Offices

A complete solution for air quality monitoring, data analysis, and fresh air solutions in workplaces prioritizing employee's health and productivity.

air quality solutions for smart-city for Chiang Mai

Air Quality Solutions For Smart City

Prana Air smart city project provides air quality monitors, drones, outdoor air purifiers, and data dashboards solution to improve air quality.

air quality solutions for institutes for Chiang Mai

Air Quality Solutions for Schools | Institutes

Prana Air provides the air quality solutions for schools by air monitoring & fresh air machine that help the students to breather clean air.

air quality solutions for hotels for Chiang Mai

Air Quality Solutions For Hotels

Prana Air air quality solutions are suited for hotel businesses. The occupancy of hotels is the main reasons for bad air quality.

air quality solutions for restaurants for Chiang Mai

Air Quality Solutions for Restaurants

Prana Air has the air quality solutions for restaurant, cafes, and gives you the power to know what your customers and staff breathe.

air quality solutions for rmc-plants for Chiang Mai

Air Quality Solutions for RMC Plants

Prana Air provides air quality monitoring solutions for RMC plants. Improve compliance, protect workers and community, and reduce emissions.

air quality solutions for fitness-center for Chiang Mai

Air Quality Solutions for Fitness Center

Prana Air provides the air quality solutions of pollution monitoring and fresh air for fitness center - gym.

air quality solutions for parking-lot for Chiang Mai

Air Quality Solutions for Parking Lot

A complete solution for air monitoring, data analysis, and fresh air solutions for enclosed car parking areas and car lots.

air quality solutions for retail-stores for Chiang Mai

Air Quality Solutions for Retail Stores

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets.

air quality solutions for airport for Chiang Mai

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets

Prana Air provides the air quality solutions for airport. Gathering of many passengers is the main reasons of bad air quality in airport.

air quality solutions for construction-sites for Chiang Mai

Air Quality Solutions For Construction Sites

Prana Air offers air quality monitoring solutions for construction sites with data cloud storage, web-dashboard, mobile apps, TV display.

air quality solutions for hospitals for Chiang Mai

Air Quality Solutions For Hospitals

Prana Air provides air quality monitoring and fresh air solutions for hospitals to ensure clean and healthy indoor air.

air quality solutions for bathroom for Chiang Mai

Air Quality Solutions For Washroom | Bathroom

Improve washroom and bathroom air quality with Prana Air air quality monitoring devices and fresh air machine. Breathe easy and stay healthy.

air quality solutions for banks for Chiang Mai

Air Quality Solutions for Banks

Prana Air provides air quality solutions of pollution monitoring and fresh air for banks and financial institutions.

air quality solutions for cinema for Chiang Mai

Air Quality Solutions for Cinema

Air quality solutions for cinema halls or theatres will help the customers to get the good experience, comfort and breathe clean air.

air quality solutions for real-estates for Chiang Mai

Air Quality Solutions For Real Estates

Prana Air provides the air quality solutions of pollution monitoring and fresh air for real estates - residential and commercial.

Chiang Mai's AQI Data Analytics Solutions

Air quality data monitoring platforms

Mobile AppMobile App
Smart TV AppSmart TV App
Web DashboardWeb Dashboard
APIAPI
WidgetsWidgets
aqi air quality app for Chiang Mai
Mobile App

Empower Your Decisions with Reliable Data

Get it onApp Store
Get it onGoogle Play
Your area’s real-time data with detailed parameters.

Your area’s real-time data with detailed parameters.

Personalized health advice as per current AQI.

Personalized health advice as per current AQI.

Analytical data to identify trends and conditions.

Analytical data to identify trends and conditions.

Connect and control your air quality devices.

Connect and control your air quality devices.

Air Quality FAQs

at Chiang Mai

Frequently Asked Questions About Air Quality

What is the current AQI level in Chiang Mai?

The current real-time AQI level in Chiang Mai is 61 (Moderate) due to recent rainfall by 0.02mm/hr. This was last updated 2025-07-20 01:55:08 PM (Local Time).

When was the best AQI level in Chiang Mai in the last 24 hours?

The best AQI level was 43 (Good) at 9:09 AM (Local Time) during the last 24 hours.

When was the worst AQI level in Chiang Mai in the last 24 hours?

The worst AQI level was 59 (Moderate) at 12:09 AM (Local Time) during the last 24 hours.

What is the current trend of AQI levels in Chiang Mai during last 24 hours?

The AQI levels in Chiang Mai have been fluctuating throughout the last 24 hours. The levels have increased by highest 59 at 12:09 AM (Local Time), lowest 43 at 9:09 AM (Local Time).

What actions are recommended as per the current AQI level in Chiang Mai?

Current AQI levels are acceptable; however, some pollutants may be a concern for a small number of sensitive individuals.

Recent AQI Blogs

Read the latest news

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Prana Sense

Air Quality Monitor

Air Quality Index depicts the extent of air pollution at a particular location.

Prana Sense Air Quality MonitorPrana Sense Air Quality Monitor
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Pocket PM

Air Quality Monitor

Know the air quality around you wherever you are with the Pocket monitor to get instant air quality insights.

Pocket PM Air Quality MonitorPocket PM Air Quality Monitor
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Cair +

Indoor Air Quality Monitor

Track indoor air quality with advanced connectivity and portability for real-time air quality data.

Cair + Indoor Air Quality MonitorCair + Indoor Air Quality Monitor