City Center, Dayan, 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
City Center, Dayan, Yunnan, China
AQI Trends: Highest and Lowest
Same Day Analysis (8th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 19 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: 7th Feb - 8th Feb 2026
City Center, Dayan, Yunnan, China
7 AM7th Feb 2026
5 PM
6 AM8th Feb 2026
33AQI
8AQI
29AQI
8AQI
In the last 24 hours,
City Center's AQI reached its highest point of 33 at 12 PM during the Day, while the lowest point, 8, was recorded at 7 PM during the Night between 7th Feb and 8th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
City Center, Dayan, Yunnan, China
3°C-4/12°C
4°C-3/15°C
5°C-2/14°C
5°C-2/15°C
5°C-2/15°C
5°C-1/14°C
4°C-3/14°C
5°C-3/15°C
6°C-2/16°C
7°C-2/17°C
5°C-2/15°C
5°C-3/15°C
5°C-3/15°C
5°C-2/15°C
6°C-2/17°C
6°C-2/17°C
6°C-2/15°C
6°C-2/16°C
7°C-2/17°C
7°C-1/17°C
6°C-2/15°C
6°C-2/15°C
7°C-1/18°C
6°C-1/16°C
7°C-2/18°C
7°C-2/18°C
6°C-2/17°C
6°C-2/16°C
6°C-2/16°C
6°C-2/16°C
28AQI
22AQI
34AQI
22AQI
2026 Days Vs Air Quality
City Center, Dayan, Yunnan, China
95%
37
5%
2
Total number of days with different AQI categories in last 40 days in 2026 (325 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2026, 95% of 40 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
City Center, Dayan, Yunnan, China
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI (US)
31AQI (US)
36AQI (US)
39AQI (US)
28AQI (US)
25AQI (US)
29AQI (US)
24AQI (US)
24AQI (US)
23AQI (US)
24AQI (US)
27AQI (US)
28AQI (US)
22AQI (US)
24AQI (US)
19AQI (US)
23AQI (US)
24AQI (US)
18AQI (US)
17AQI (US)
16AQI (US)
24AQI (US)
26AQI (US)
23AQI (US)
15AQI (US)
28AQI (US)
36AQI (US)
20AQI (US)
18AQI (US)
21AQI (US)
27AQI (US)
23AQI (US)
40AQI (US)
65AQI (US)
66AQI (US)
33AQI (US)
26AQI (US)
23AQI (US)
19AQI (US)
25AQI (US)
37AQI (US)
No. of days
202627AQI (US)
Highest AQI (US) recorded in
February37AQI (US)
Lowest AQI (US) recorded in
January25AQI (US)
202551AQI (US)
Highest AQI (US) recorded in
January66AQI (US)
Lowest AQI (US) recorded in
December34AQI (US)
202444AQI (US)
Highest AQI (US) recorded in
December56AQI (US)
Lowest AQI (US) recorded in
July36AQI (US)
202337AQI (US)
Highest AQI (US) recorded in
April54AQI (US)
Lowest AQI (US) recorded in
December27AQI (US)
202243AQI (US)
Highest AQI (US) recorded in
March76AQI (US)
Lowest AQI (US) recorded in
January32AQI (US)
202139AQI (US)
Highest AQI (US) recorded in
April59AQI (US)
Lowest AQI (US) recorded in
August29AQI (US)
202044AQI (US)
Highest AQI (US) recorded in
April67AQI (US)
Lowest AQI (US) recorded in
June31AQI (US)
Most & Least Polluted Years Over the Last 7 Years
City Center's annual 2026 AQI (US) (27) shows an average percentage change of -36.3% (improved AQI (US)) compared to previous years: 2020 (44), 2021 (39), 2022 (43), 2023 (37), 2024 (44), 2025 (51).