Biji Square, Kunming, Yunnan, 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
Biji Square, Kunming, Yunnan, China
AQI Trends: Highest and Lowest
Same Day Analysis (10th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 29 of Good 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: 9th Feb - 10th Feb 2026
Biji Square, Kunming, Yunnan, China
6 AM9th Feb 2026
5 PM
5 AM10th Feb 2026
70AQI
10AQI
48AQI
14AQI
In the last 24 hours,
Biji Square's AQI reached its highest point of 70 at 11 AM during the Day, while the lowest point, 10, was recorded at 3 PM during the Day between 9th Feb and 10th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Biji Square, Kunming, Yunnan, China
9°C5/16°C
10°C5/17°C
11°C6/18°C
10°C4/17°C
11°C5/17°C
11°C6/17°C
12°C6/18°C
12°C5/20°C
11°C5/20°C
11°C5/19°C
11°C5/18°C
10°C4/18°C
11°C4/19°C
11°C4/19°C
11°C5/19°C
11°C5/19°C
12°C5/20°C
12°C5/20°C
12°C6/19°C
11°C5/19°C
12°C6/20°C
11°C6/19°C
12°C6/21°C
13°C6/21°C
14°C7/21°C
12°C5/20°C
12°C5/21°C
10°C6/18°C
11°C5/19°C
12°C5/20°C
44AQI
26AQI
48AQI
26AQI
2026 Days Vs Air Quality
Biji Square, Kunming, Yunnan, China
90%
37
10%
4
Total number of days with different AQI categories in last 42 days in 2026 (323 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2026, 90% of 42 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Biji Square, Kunming, Yunnan, China
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
31AQI (US)
31AQI (US)
25AQI (US)
27AQI (US)
25AQI (US)
23AQI (US)
28AQI (US)
35AQI (US)
27AQI (US)
21AQI (US)
38AQI (US)
33AQI (US)
78AQI (US)
40AQI (US)
49AQI (US)
27AQI (US)
44AQI (US)
37AQI (US)
31AQI (US)
30AQI (US)
27AQI (US)
27AQI (US)
32AQI (US)
34AQI (US)
28AQI (US)
35AQI (US)
38AQI (US)
38AQI (US)
29AQI (US)
28AQI (US)
42AQI (US)
35AQI (US)
49AQI (US)
71AQI (US)
73AQI (US)
53AQI (US)
23AQI (US)
41AQI (US)
50AQI (US)
41AQI (US)
29AQI (US)
33AQI (US)
47AQI (US)
No. of days
202637AQI (US)
Highest AQI (US) recorded in
February47AQI (US)
Lowest AQI (US) recorded in
January33AQI (US)
202558AQI (US)
Highest AQI (US) recorded in
April88AQI (US)
Lowest AQI (US) recorded in
November36AQI (US)
202463AQI (US)
Highest AQI (US) recorded in
April97AQI (US)
Lowest AQI (US) recorded in
July34AQI (US)
202373AQI (US)
Highest AQI (US) recorded in
February105AQI (US)
Lowest AQI (US) recorded in
July45AQI (US)
202270AQI (US)
Highest AQI (US) recorded in
March99AQI (US)
Lowest AQI (US) recorded in
June46AQI (US)
202177AQI (US)
Highest AQI (US) recorded in
March128AQI (US)
Lowest AQI (US) recorded in
July50AQI (US)
202074AQI (US)
Highest AQI (US) recorded in
March127AQI (US)
Lowest AQI (US) recorded in
August51AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Biji Square's annual 2026 AQI (US) (37) shows an average percentage change of -46.3% (improved AQI (US)) compared to previous years: 2020 (74), 2021 (77), 2022 (70), 2023 (73), 2024 (63), 2025 (58).