Putuo East Port, Zhoushan, Zhejiang, 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
Putuo East Port, Zhoushan, Zhejiang, China
AQI Trends: Highest and Lowest
Same Day Analysis (6th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 83 of Moderate air quality, showing improvement over 2025 and 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Feb - 6th Feb 2026
Putuo East Port, Zhoushan, Zhejiang, China
6 AM5th Feb 2026
5 PM
5 AM6th Feb 2026
118AQI
54AQI
154AQI
80AQI
In the last 24 hours,
Putuo East Port's AQI reached its highest point of 154 at 3 AM during the Night, while the lowest point, 54, was recorded at 7 AM during the Day between 5th Feb and 6th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Putuo East Port, Zhoushan, Zhejiang, China
8°C7/8°C
8°C6/9°C
9°C8/11°C
6°C4/7°C
9°C5/11°C
11°C10/12°C
13°C11/14°C
13°C12/14°C
14°C12/15°C
13°C12/14°C
13°C13/14°C
11°C8/13°C
7°C5/8°C
5°C4/5°C
4°C4/5°C
6°C4/8°C
8°C6/9°C
11°C10/12°C
12°C9/13°C
8°C7/8°C
8°C8/9°C
10°C8/10°C
9°C8/9°C
7°C6/8°C
6°C5/7°C
7°C5/8°C
8°C6/9°C
11°C10/12°C
12°C10/12°C
8°C5/10°C
87AQI
73AQI
83AQI
83AQI
2026 Days Vs Air Quality
Putuo East Port, Zhoushan, Zhejiang, China
14%
5
59%
22
24%
9
3%
1
Total number of days with different AQI categories in last 38 days in 2026 (327 days remaining)
Under WHO’s Safe Air Quality Limits: 14%
Health Risk Level:
Extreme
In 2026, 14% of 38 days were within WHO’s safe air quality limits. The risk of health issues is Extreme, potentially causing respiratory problems, heart disease, skin issues, and stress, especially for children, the elderly, and those with pre-existing conditions.
Annual Air Quality Insights
Putuo East Port, Zhoushan, Zhejiang, China
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI (US)
57AQI (US)
70AQI (US)
69AQI (US)
118AQI (US)
155AQI (US)
112AQI (US)
125AQI (US)
132AQI (US)
107AQI (US)
67AQI (US)
60AQI (US)
99AQI (US)
97AQI (US)
84AQI (US)
150AQI (US)
93AQI (US)
77AQI (US)
59AQI (US)
26AQI (US)
54AQI (US)
61AQI (US)
91AQI (US)
142AQI (US)
91AQI (US)
54AQI (US)
65AQI (US)
51AQI (US)
46AQI (US)
42AQI (US)
14AQI (US)
70AQI (US)
140AQI (US)
106AQI (US)
55AQI (US)
82AQI (US)
83AQI (US)
80AQI (US)
89AQI (US)
No. of days
202682AQI (US)
Highest AQI (US) recorded in
February89AQI (US)
Lowest AQI (US) recorded in
January80AQI (US)
202560AQI (US)
Highest AQI (US) recorded in
January92AQI (US)
Lowest AQI (US) recorded in
July43AQI (US)
202459AQI (US)
Highest AQI (US) recorded in
January102AQI (US)
Lowest AQI (US) recorded in
October31AQI (US)
202361AQI (US)
Highest AQI (US) recorded in
December84AQI (US)
Lowest AQI (US) recorded in
September43AQI (US)
202254AQI (US)
Highest AQI (US) recorded in
December70AQI (US)
Lowest AQI (US) recorded in
October39AQI (US)
202155AQI (US)
Highest AQI (US) recorded in
January78AQI (US)
Lowest AQI (US) recorded in
July40AQI (US)
202052AQI (US)
Highest AQI (US) recorded in
April71AQI (US)
Lowest AQI (US) recorded in
October43AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Putuo East Port's annual 2026 AQI (US) (82) shows an average percentage change of 43.8% (worsened AQI (US)) compared to previous years: 2020 (52), 2021 (55), 2022 (54), 2023 (61), 2024 (59), 2025 (60).