Chonan, Chungnam, South Korea Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
March Air Quality Analysis
Chonan, Chungnam, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (7th March):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 59 of Moderate air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 6th Mar - 7th Mar 2026
Chonan, Chungnam, South Korea
7 AM6th Mar 2026
6 PM
6 AM7th Mar 2026
103AQI
59AQI
92AQI
67AQI
In the last 24 hours,
Chonan's AQI reached its highest point of 103 at 6 PM during the Day, while the lowest point, 59, was recorded at 7 AM during the Day between 6th Mar and 7th Mar 2026.
Day & Night AQI Trend : Feb - Mar 2026
Chonan, Chungnam, South Korea
-5°C-7/-4°C
-6°C-8/-4°C
-7°C-10/-4°C
-3°C-8/4°C
1°C-3/6°C
1°C-2/5°C
1°C-3/8°C
4°C-2/11°C
5°C1/12°C
4°C0/9°C
0°C-2/4°C
0°C-3/6°C
1°C-2/6°C
1°C-4/7°C
4°C-2/12°C
8°C1/16°C
7°C2/11°C
1°C-2/4°C
2°C-1/4°C
2°C-5/10°C
6°C0/12°C
8°C3/13°C
8°C2/14°C
8°C3/12°C
5°C4/6°C
6°C3/11°C
4°C0/8°C
6°C1/13°C
2°C0/5°C
0°C-2/3°C
75AQI
63AQI
66AQI
60AQI
2026 Days Vs Air Quality
Chonan, Chungnam, South Korea
33%
22
50%
33
17%
11
Total number of days with different AQI categories in last 67 days in 2026 (298 days remaining)
Under WHO’s Safe Air Quality Limits: 33%
Health Risk Level:
High
In 2026, 33% of 67 days were within WHO’s safe air quality limits. The risk of health issues is High, with respiratory problems, heart disease, skin issues, and stress being more common, particularly among children and the elderly.
Annual Air Quality Insights
Chonan, Chungnam, South Korea
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
32AQI (US)
39AQI (US)
58AQI (US)
85AQI (US)
66AQI (US)
53AQI (US)
56AQI (US)
29AQI (US)
45AQI (US)
57AQI (US)
30AQI (US)
45AQI (US)
52AQI (US)
37AQI (US)
102AQI (US)
144AQI (US)
123AQI (US)
121AQI (US)
69AQI (US)
38AQI (US)
41AQI (US)
38AQI (US)
66AQI (US)
57AQI (US)
33AQI (US)
55AQI (US)
64AQI (US)
41AQI (US)
52AQI (US)
55AQI (US)
73AQI (US)
83AQI (US)
71AQI (US)
66AQI (US)
109AQI (US)
128AQI (US)
69AQI (US)
44AQI (US)
44AQI (US)
57AQI (US)
85AQI (US)
110AQI (US)
116AQI (US)
133AQI (US)
141AQI (US)
108AQI (US)
49AQI (US)
55AQI (US)
61AQI (US)
42AQI (US)
81AQI (US)
94AQI (US)
58AQI (US)
31AQI (US)
52AQI (US)
59AQI (US)
30AQI (US)
34AQI (US)
54AQI (US)
36AQI (US)
20AQI (US)
45AQI (US)
65AQI (US)
89AQI (US)
71AQI (US)
59AQI (US)
60AQI (US)
74AQI (US)
55AQI (US)
No. of days
202665AQI (US)
Highest AQI (US) recorded in
February74AQI (US)
Lowest AQI (US) recorded in
March55AQI (US)
202562AQI (US)
Highest AQI (US) recorded in
March82AQI (US)
Lowest AQI (US) recorded in
September43AQI (US)
202464AQI (US)
Highest AQI (US) recorded in
January83AQI (US)
Lowest AQI (US) recorded in
July42AQI (US)
202372AQI (US)
Highest AQI (US) recorded in
February102AQI (US)
Lowest AQI (US) recorded in
September53AQI (US)
202274AQI (US)
Highest AQI (US) recorded in
February95AQI (US)
Lowest AQI (US) recorded in
August28AQI (US)
202175AQI (US)
Highest AQI (US) recorded in
March108AQI (US)
Lowest AQI (US) recorded in
September43AQI (US)
202068AQI (US)
Highest AQI (US) recorded in
December90AQI (US)
Lowest AQI (US) recorded in
July50AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Chonan's annual 2026 AQI (US) (65) shows an average percentage change of -5.3% (improved AQI (US)) compared to previous years: 2020 (68), 2021 (75), 2022 (74), 2023 (72), 2024 (64), 2025 (62).