Dong Hoi, Quang Binh Province, Vietnam Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

July Air Quality Analysis
Dong Hoi, Quang Binh Province, Vietnam

2024

2025

AQI

Days

Days	2025	2024
Jul. 1	49	47
Jul. 2		46
Jul. 3		44
Jul. 4		44
Jul. 5		41
Jul. 6		44
Jul. 7		42
Jul. 8		43
Jul. 9		43
Jul. 10		45
Jul. 11		45
Jul. 12		45
Jul. 13		46
Jul. 14		45
Jul. 15		46
Jul. 16		45
Jul. 17		42
Jul. 18		40
Jul. 19		41
Jul. 20		42
Jul. 21		46
Jul. 22		42
Jul. 23		40
Jul. 24		39
Jul. 25		32
Jul. 26		38
Jul. 27		33
Jul. 28		37
Jul. 29		35
Jul. 30		38
Jul. 31		34

AQI Trends: Highest and Lowest

Highest AQI recorded on

1st Jul 2025

49AQI

Lowest AQI recorded on

25th Jul 2024

32AQI

Same Day Analysis (1st July ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 49 of Good air quality on the same day.

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Dong Hoi, Quang Binh Province, Vietnam

AQI

Day

Night

5 AM2nd Jul 2025

6 PM

4 AM3rd Jul 2025

Day time

Avg. Highest Time

6AM2nd Jul

53AQI

Avg. Lowest Time

8AM2nd Jul

38AQI

Night time

Avg. Highest Time

1AM3rd Jul

52AQI

Avg. Lowest Time

11PM2nd Jul

38AQI

In the last 24 hours,

Dong Hoi's AQI reached its highest point of 53 at 6 AM during the Day, while the lowest point, 38, was recorded at 11 PM during the Night between 2nd Jul and 3rd Jul 2025.

Day & Night AQI Trend : Jun - Jul 2025
Dong Hoi, Quang Binh Province, Vietnam

JunJul

03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd

Day

Night

30°C27/33°C

29°C27/33°C

28°C26/31°C

29°C26/32°C

29°C27/33°C

30°C27/33°C

30°C27/34°C

28°C26/32°C

27°C26/29°C

25°C24/26°C

25°C24/25°C

27°C26/29°C

29°C27/31°C

29°C27/33°C

30°C27/34°C

29°C26/33°C

29°C27/33°C

29°C27/32°C

28°C27/31°C

28°C26/31°C

27°C25/30°C

28°C26/30°C

28°C26/31°C

28°C26/30°C

28°C27/31°C

28°C26/31°C

5 AM

11 AM

6 PM

11 PM

4 AM

0°C0/0°C

Day time

Avg. Highest Time

5 AM - 6 PM

47AQI

14 hours / Day

420 hours / Month

Avg. Lowest Time

5 AM - 6 PM

47AQI

14 hours / Day

420 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 5 AM to 6 PM (Avg. 47), while the lowest AQI was between 5 AM to 6 PM (Avg. 47).

Night time

Avg. Highest Time

12 AM - 11 PM

51AQI

10 hours / Day

300 hours / Month

Avg. Lowest Time

12 AM - 11 PM

51AQI

10 hours / Day

300 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 12 AM to 11 PM (Avg. 51), while the lowest AQI was between 12 AM to 11 PM (Avg. 51).

2025 Days Vs Air Quality
Dong Hoi, Quang Binh Province, Vietnam

2025

29%

69%

126

Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)

Good

52 Days

Moderate

126 Days

Poor

4 Days

Unhealthy

0 Days

Severe

0 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 29%

Health Risk Level:

Very high

In 2025, 29% of 184 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.

Annual Air Quality Insights
Dong Hoi, Quang Binh Province, Vietnam

AQI levels in 2025

AQI

PM2.5

PM10

SO2

NO2

Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

84AQI

56AQI

58AQI

63AQI

51AQI

50AQI

49AQI

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202560AQI

126

Highest AQI recorded in

January

84AQI

Lowest AQI recorded in

July

49AQI

202465AQI

117

164

Highest AQI recorded in

April

103AQI

Lowest AQI recorded in

September

27AQI

202391AQI

Highest AQI recorded in

January

128AQI

Lowest AQI recorded in

November

64AQI

202296AQI

Highest AQI recorded in

October

112AQI

Lowest AQI recorded in

November

79AQI

Most & Least Polluted Years Over the Last 4 Years

Most Polluted Year Recorded

2022(Avg.)

96AQI

Least Polluted Year Recorded

2025(Avg.)

60AQI

Dong Hoi's annual 2025 AQI (60) shows an average percentage change of -25.9% (improved AQI) compared to previous years: 2022 (96), 2023 (91), 2024 (65).


5 AM	52
6 AM	53
7 AM	46
8 AM	38
9 AM	41
10 AM	40
11 AM	46
12 PM	50
1 PM	50
2 PM	48
3 PM	42
4 PM	42
5 PM	42
6 PM	39
7 PM	38
8 PM	38
9 PM	38
10 PM	38
11 PM	38
12 AM	48
1 AM	52
2 AM	51
3 AM	51
4 AM	51

Dong Hoi, Quang Binh Province, Vietnam Historical Air Quality Analysis

July Air Quality AnalysisDong Hoi, Quang Binh Province, Vietnam

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025Dong Hoi, Quang Binh Province, Vietnam

Day & Night AQI Trend : Jun - Jul 2025Dong Hoi, Quang Binh Province, Vietnam

2025 Days Vs Air Quality Dong Hoi, Quang Binh Province, Vietnam

Annual Air Quality InsightsDong Hoi, Quang Binh Province, Vietnam

AQI levels in 2025

No. of days

July Air Quality Analysis
Dong Hoi, Quang Binh Province, Vietnam

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Dong Hoi, Quang Binh Province, Vietnam

Day & Night AQI Trend : Jun - Jul 2025
Dong Hoi, Quang Binh Province, Vietnam

2025 Days Vs Air Quality
Dong Hoi, Quang Binh Province, Vietnam

Annual Air Quality Insights
Dong Hoi, Quang Binh Province, Vietnam