Cheongju, Cheongju, Chungbuk, 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
Cheongju, Cheongju, Chungbuk, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (10th March):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 118 of Poor air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 9th Mar - 10th Mar 2026
Cheongju, Cheongju, Chungbuk, South Korea
7 AM9th Mar 2026
6 PM
6 AM10th Mar 2026
118AQI
70AQI
132AQI
60AQI
In the last 24 hours,
Cheongju's AQI reached its highest point of 132 at 12 AM during the Night, while the lowest point, 60, was recorded at 10 PM during the Night between 9th Mar and 10th Mar 2026.
Day & Night AQI Trend : Feb - Mar 2026
Cheongju, Cheongju, Chungbuk, South Korea
-3°C-8/4°C
0°C-3/5°C
1°C-2/5°C
1°C-4/8°C
3°C-2/12°C
5°C0/13°C
4°C0/10°C
0°C-2/5°C
0°C-4/7°C
1°C-3/6°C
1°C-4/8°C
4°C-3/12°C
7°C0/16°C
6°C1/11°C
1°C-3/6°C
1°C-2/3°C
2°C-5/10°C
5°C-2/11°C
7°C3/12°C
7°C1/14°C
7°C3/12°C
5°C4/6°C
6°C3/10°C
4°C0/10°C
6°C0/13°C
3°C-1/6°C
0°C-2/4°C
1°C-3/7°C
1°C-1/6°C
2°C-2/9°C
76AQI
61AQI
65AQI
60AQI
2026 Days Vs Air Quality
Cheongju, Cheongju, Chungbuk, South Korea
41%
28
43%
30
14%
10
1%
1
Total number of days with different AQI categories in last 70 days in 2026 (295 days remaining)
Under WHO’s Safe Air Quality Limits: 41%
Health Risk Level:
Significant
In 2026, 41% of 70 days were within WHO’s safe air quality limits, and 59% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Cheongju, Cheongju, Chungbuk, South Korea
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
36AQI (US)
41AQI (US)
61AQI (US)
79AQI (US)
67AQI (US)
51AQI (US)
59AQI (US)
27AQI (US)
45AQI (US)
62AQI (US)
30AQI (US)
48AQI (US)
50AQI (US)
33AQI (US)
91AQI (US)
152AQI (US)
126AQI (US)
115AQI (US)
74AQI (US)
38AQI (US)
43AQI (US)
33AQI (US)
70AQI (US)
57AQI (US)
32AQI (US)
54AQI (US)
61AQI (US)
39AQI (US)
51AQI (US)
55AQI (US)
76AQI (US)
78AQI (US)
67AQI (US)
57AQI (US)
110AQI (US)
123AQI (US)
68AQI (US)
44AQI (US)
46AQI (US)
50AQI (US)
77AQI (US)
111AQI (US)
124AQI (US)
122AQI (US)
142AQI (US)
116AQI (US)
45AQI (US)
57AQI (US)
50AQI (US)
35AQI (US)
70AQI (US)
92AQI (US)
49AQI (US)
30AQI (US)
45AQI (US)
53AQI (US)
25AQI (US)
21AQI (US)
49AQI (US)
33AQI (US)
45AQI (US)
35AQI (US)
53AQI (US)
73AQI (US)
74AQI (US)
57AQI (US)
61AQI (US)
79AQI (US)
118AQI (US)
60AQI (US)
70AQI (US)
63AQI (US)
No. of days
202664AQI (US)
Highest AQI (US) recorded in
February70AQI (US)
Lowest AQI (US) recorded in
January60AQI (US)
202558AQI (US)
Highest AQI (US) recorded in
January79AQI (US)
Lowest AQI (US) recorded in
September38AQI (US)
202454AQI (US)
Highest AQI (US) recorded in
January68AQI (US)
Lowest AQI (US) recorded in
July35AQI (US)
202362AQI (US)
Highest AQI (US) recorded in
February94AQI (US)
Lowest AQI (US) recorded in
September42AQI (US)
202264AQI (US)
Highest AQI (US) recorded in
February77AQI (US)
Lowest AQI (US) recorded in
August26AQI (US)
202160AQI (US)
Highest AQI (US) recorded in
March81AQI (US)
Lowest AQI (US) recorded in
July36AQI (US)
202057AQI (US)
Highest AQI (US) recorded in
April70AQI (US)
Lowest AQI (US) recorded in
July38AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Cheongju's annual 2026 AQI (US) (64) shows an average percentage change of 9.3% (worsened AQI (US)) compared to previous years: 2020 (57), 2021 (60), 2022 (64), 2023 (62), 2024 (54), 2025 (58).