Weichang County Government, Chifeng, Inner Mongolia, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
February Air Quality Analysis
Weichang County Government, Chifeng, Inner Mongolia, China
AQI Trends: Highest and Lowest
Same Day Analysis (9th February):
On this day, AQI across the 4 years varied significantly: 2026 ranks 1st highest AQI at 76 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 8th Feb - 9th Feb 2026
Weichang County Government, Chifeng, Inner Mongolia, China
7 AM8th Feb 2026
5 PM
6 AM9th Feb 2026
52AQI
15AQI
92AQI
27AQI
In the last 24 hours,
Weichang County Government's AQI reached its highest point of 92 at 2 AM during the Night, while the lowest point, 15, was recorded at 11 AM during the Day between 8th Feb and 9th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Weichang County Government, Chifeng, Inner Mongolia, China
-15°C-18/-11°C
-12°C-15/-7°C
-15°C-17/-11°C
-11°C-16/-4°C
-7°C-11/-4°C
-14°C-20/-12°C
-16°C-20/-12°C
-14°C-19/-10°C
-20°C-23/-17°C
-22°C-25/-16°C
-19°C-21/-14°C
-17°C-22/-11°C
-16°C-21/-11°C
-16°C-20/-9°C
-14°C-19/-8°C
-12°C-16/-8°C
-14°C-19/-8°C
-13°C-18/-6°C
-14°C-18/-7°C
-11°C-15/-6°C
-13°C-18/-7°C
-13°C-17/-7°C
-11°C-18/-1°C
-6°C-11/3°C
-4°C-9/2°C
-14°C-20/-13°C
-18°C-22/-14°C
-17°C-20/-11°C
-13°C-21/-2°C
-6°C-11/3°C
73AQI
38AQI
74AQI
49AQI
2026 Days Vs Air Quality
Weichang County Government, Chifeng, Inner Mongolia, China
35%
14
58%
23
8%
3
Total number of days with different AQI categories in last 41 days in 2026 (324 days remaining)
Under WHO’s Safe Air Quality Limits: 35%
Health Risk Level:
High
In 2026, 35% of 41 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
Weichang County Government, Chifeng, Inner Mongolia, China
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
63AQI (US)
66AQI (US)
97AQI (US)
95AQI (US)
65AQI (US)
54AQI (US)
43AQI (US)
72AQI (US)
116AQI (US)
36AQI (US)
26AQI (US)
61AQI (US)
40AQI (US)
89AQI (US)
137AQI (US)
91AQI (US)
41AQI (US)
68AQI (US)
34AQI (US)
33AQI (US)
40AQI (US)
59AQI (US)
68AQI (US)
56AQI (US)
51AQI (US)
69AQI (US)
44AQI (US)
76AQI (US)
84AQI (US)
94AQI (US)
64AQI (US)
49AQI (US)
33AQI (US)
84AQI (US)
136AQI (US)
73AQI (US)
27AQI (US)
24AQI (US)
33AQI (US)
76AQI (US)
66AQI (US)
59AQI (US)
No. of days
202664AQI (US)
Highest AQI (US) recorded in
January66AQI (US)
Lowest AQI (US) recorded in
February59AQI (US)
202569AQI (US)
Highest AQI (US) recorded in
December85AQI (US)
Lowest AQI (US) recorded in
August56AQI (US)
202455AQI (US)
Highest AQI (US) recorded in
July63AQI (US)
Lowest AQI (US) recorded in
March12AQI (US)
202331AQI (US)
Highest AQI (US) recorded in
December33AQI (US)
Lowest AQI (US) recorded in
November15AQI (US)
202256AQI (US)
Highest AQI (US) recorded in
January79AQI (US)
Lowest AQI (US) recorded in
July32AQI (US)
202146AQI (US)
Highest AQI (US) recorded in
March105AQI (US)
Lowest AQI (US) recorded in
October1AQI (US)
202070AQI (US)
Highest AQI (US) recorded in
March97AQI (US)
Lowest AQI (US) recorded in
September56AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Weichang County Government's annual 2026 AQI (US) (64) shows an average percentage change of 26.8% (worsened AQI (US)) compared to previous years: 2020 (70), 2021 (46), 2022 (56), 2023 (31), 2024 (55), 2025 (69).