Hefei, Anhui, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
July Air Quality Analysis
Hefei, Anhui, China
AQI Trends: Highest and Lowest
Same Day Analysis (28th July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 33 of Good air quality, showing improvement over 2025 and 2023 on the same day.
Day & Night AQI Trend: 27th Jul - 28th Jul 2026
Hefei, Anhui, China
5 AM27th Jul 2026
7 PM
4 AM28th Jul 2026
43AQI
13AQI
71AQI
42AQI
In the last 24 hours,
Hefei's AQI reached its highest point of 71 at 1 AM during the Night, while the lowest point, 13, was recorded at 7 AM during the Day between 27th Jul and 28th Jul 2026.
Day & Night AQI Trend : Jun - Jul 2026
Hefei, Anhui, China
27°C24/32°C
26°C23/29°C
27°C23/33°C
28°C23/34°C
24°C23/26°C
24°C23/25°C
26°C24/28°C
27°C25/28°C
26°C24/29°C
28°C24/33°C
29°C24/34°C
30°C25/35°C
29°C25/33°C
27°C26/28°C
26°C25/27°C
30°C25/35°C
30°C27/34°C
30°C27/34°C
30°C25/34°C
25°C24/27°C
25°C24/27°C
25°C23/28°C
25°C24/28°C
25°C24/27°C
25°C25/27°C
28°C24/31°C
30°C26/35°C
30°C27/35°C
27°C25/29°C
26°C25/27°C
36AQI
27AQI
38AQI
29AQI
2026 Days Vs Air Quality
Hefei, Anhui, China
31%
64
38%
79
29%
60
3%
6
Total number of days with different AQI categories in last 209 days in 2026 (156 days remaining)
Under WHO’s Safe Air Quality Limits: 31%
Health Risk Level:
High
In 2026, 31% of 209 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
Hefei, Anhui, China
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
59AQI (US)
131AQI (US)
148AQI (US)
154AQI (US)
146AQI (US)
121AQI (US)
73AQI (US)
110AQI (US)
118AQI (US)
111AQI (US)
72AQI (US)
93AQI (US)
141AQI (US)
132AQI (US)
133AQI (US)
142AQI (US)
175AQI (US)
159AQI (US)
52AQI (US)
80AQI (US)
102AQI (US)
81AQI (US)
127AQI (US)
151AQI (US)
159AQI (US)
115AQI (US)
81AQI (US)
134AQI (US)
132AQI (US)
66AQI (US)
66AQI (US)
81AQI (US)
95AQI (US)
146AQI (US)
135AQI (US)
134AQI (US)
92AQI (US)
60AQI (US)
85AQI (US)
71AQI (US)
96AQI (US)
108AQI (US)
138AQI (US)
120AQI (US)
124AQI (US)
118AQI (US)
51AQI (US)
144AQI (US)
116AQI (US)
123AQI (US)
105AQI (US)
69AQI (US)
72AQI (US)
80AQI (US)
52AQI (US)
69AQI (US)
57AQI (US)
46AQI (US)
69AQI (US)
61AQI (US)
27AQI (US)
106AQI (US)
108AQI (US)
104AQI (US)
108AQI (US)
97AQI (US)
111AQI (US)
132AQI (US)
141AQI (US)
116AQI (US)
133AQI (US)
137AQI (US)
118AQI (US)
139AQI (US)
91AQI (US)
107AQI (US)
88AQI (US)
116AQI (US)
153AQI (US)
147AQI (US)
105AQI (US)
120AQI (US)
108AQI (US)
120AQI (US)
124AQI (US)
130AQI (US)
92AQI (US)
96AQI (US)
80AQI (US)
149AQI (US)
130AQI (US)
98AQI (US)
79AQI (US)
63AQI (US)
72AQI (US)
97AQI (US)
65AQI (US)
40AQI (US)
64AQI (US)
50AQI (US)
99AQI (US)
46AQI (US)
47AQI (US)
44AQI (US)
78AQI (US)
104AQI (US)
103AQI (US)
82AQI (US)
75AQI (US)
48AQI (US)
58AQI (US)
17AQI (US)
17AQI (US)
51AQI (US)
59AQI (US)
59AQI (US)
78AQI (US)
49AQI (US)
36AQI (US)
45AQI (US)
42AQI (US)
58AQI (US)
48AQI (US)
21AQI (US)
39AQI (US)
55AQI (US)
78AQI (US)
33AQI (US)
44AQI (US)
62AQI (US)
70AQI (US)
91AQI (US)
117AQI (US)
112AQI (US)
35AQI (US)
75AQI (US)
62AQI (US)
55AQI (US)
52AQI (US)
63AQI (US)
69AQI (US)
79AQI (US)
72AQI (US)
71AQI (US)
66AQI (US)
47AQI (US)
33AQI (US)
56AQI (US)
78AQI (US)
85AQI (US)
86AQI (US)
108AQI (US)
120AQI (US)
124AQI (US)
97AQI (US)
63AQI (US)
40AQI (US)
85AQI (US)
54AQI (US)
44AQI (US)
41AQI (US)
48AQI (US)
71AQI (US)
43AQI (US)
42AQI (US)
44AQI (US)
43AQI (US)
58AQI (US)
84AQI (US)
27AQI (US)
14AQI (US)
44AQI (US)
19AQI (US)
10AQI (US)
21AQI (US)
38AQI (US)
57AQI (US)
100AQI (US)
106AQI (US)
129AQI (US)
34AQI (US)
34AQI (US)
33AQI (US)
11AQI (US)
24AQI (US)
18AQI (US)
19AQI (US)
21AQI (US)
23AQI (US)
24AQI (US)
28AQI (US)
43AQI (US)
20AQI (US)
19AQI (US)
49AQI (US)
18AQI (US)
17AQI (US)
33AQI (US)
50AQI (US)
61AQI (US)
15AQI (US)
23AQI (US)
32AQI (US)
27AQI (US)
30AQI (US)
41AQI (US)
66AQI (US)
29AQI (US)
33AQI (US)
115AQI (US)
95AQI (US)
112AQI (US)
65AQI (US)
63AQI (US)
60AQI (US)
30AQI (US)
No. of days
202678AQI (US)
Highest AQI (US) recorded in
January115AQI (US)
Lowest AQI (US) recorded in
July30AQI (US)
202592AQI (US)
Highest AQI (US) recorded in
January131AQI (US)
Lowest AQI (US) recorded in
August54AQI (US)
202492AQI (US)
Highest AQI (US) recorded in
January135AQI (US)
Lowest AQI (US) recorded in
July50AQI (US)
202397AQI (US)
Highest AQI (US) recorded in
January128AQI (US)
Lowest AQI (US) recorded in
July56AQI (US)
202292AQI (US)
Highest AQI (US) recorded in
January136AQI (US)
Lowest AQI (US) recorded in
July57AQI (US)
202192AQI (US)
Highest AQI (US) recorded in
January133AQI (US)
Lowest AQI (US) recorded in
July51AQI (US)
202090AQI (US)
Highest AQI (US) recorded in
December144AQI (US)
Lowest AQI (US) recorded in
August61AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Hefei's annual 2026 AQI (US) (78) shows an average percentage change of -15.6% (improved AQI (US)) compared to previous years: 2020 (90), 2021 (92), 2022 (92), 2023 (97), 2024 (92), 2025 (92).