Hien Nam, Thanh pho Hung Yen, Hung Yen, Vietnam Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Hien Nam, Thanh pho Hung Yen, Hung Yen, Vietnam
AQI Trends: Highest and Lowest
Same Day Analysis (10th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 55 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 11th Aug - 12th Aug 2025
Hien Nam, Thanh pho Hung Yen, Hung Yen, Vietnam
5 AM11th Aug 2025
6 PM
4 AM12th Aug 2025
AQI
AQI
75AQI
34AQI
In the last 24 hours,
Hien Nam's AQI reached its highest point of 75 at 7 AM during the Night, while the lowest point, 34, was recorded at 3 PM during the Night between 11th Aug and 12th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Hien Nam, Thanh pho Hung Yen, Hung Yen, Vietnam
29°C26/32°C
30°C27/33°C
30°C27/35°C
30°C28/34°C
31°C28/36°C
32°C28/37°C
30°C25/36°C
27°C25/32°C
25°C24/26°C
26°C25/26°C
28°C26/32°C
28°C26/31°C
28°C26/32°C
29°C26/33°C
29°C26/33°C
30°C26/35°C
31°C28/35°C
31°C28/37°C
31°C28/36°C
29°C27/32°C
30°C26/35°C
32°C28/37°C
30°C28/32°C
30°C26/33°C
29°C25/33°C
29°C27/33°C
30°C27/35°C
30°C28/35°C
31°C28/35°C
--°C/°C
--°C/°C
52AQI
52AQI
54AQI
54AQI
2025 Days Vs Air Quality
Hien Nam, Thanh pho Hung Yen, Hung Yen, Vietnam
22%
16
78%
58
Total number of days with different AQI categories in last 223 days in 2025 (142 days remaining)
Under WHO’s Safe Air Quality Limits: 22%
Health Risk Level:
Very high
In 2025, 22% of 223 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
Hien Nam, Thanh pho Hung Yen, Hung Yen, Vietnam
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
56AQI
61AQI
58AQI
57AQI
58AQI
57AQI
60AQI
61AQI
59AQI
59AQI
59AQI
60AQI
60AQI
61AQI
59AQI
58AQI
60AQI
61AQI
62AQI
61AQI
54AQI
56AQI
54AQI
47AQI
41AQI
49AQI
54AQI
51AQI
51AQI
45AQI
45AQI
43AQI
46AQI
36AQI
34AQI
41AQI
54AQI
53AQI
51AQI
52AQI
51AQI
55AQI
52AQI
54AQI
54AQI
56AQI
59AQI
61AQI
53AQI
55AQI
52AQI
60AQI
54AQI
53AQI
44AQI
42AQI
41AQI
46AQI
51AQI
50AQI
49AQI
57AQI
55AQI
56AQI
53AQI
53AQI
56AQI
56AQI
55AQI
54AQI
53AQI
52AQI
54AQI
55AQI
58AQI
55AQI
51AQI
54AQI
No. of days
202553AQI
Highest AQI recorded in
May58AQI
Lowest AQI recorded in
July51AQI
Most & Least Polluted Years Over the Last 1 Years
Hien Nam's annual 2025 AQI (53) shows an average percentage change of NaN% (improved AQI) compared to previous years: .