Environmental Monitoring Supervision Center, Langfang, Hebei, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Environmental Monitoring Supervision Center, Langfang, Hebei, China
AQI Trends: Highest and Lowest
Same Day Analysis (19th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 60 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 20th Aug - 21st Aug 2025
Environmental Monitoring Supervision Center, Langfang, Hebei, China
5 AM20th Aug 2025
7 PM
4 AM21st Aug 2025
66AQI
53AQI
66AQI
59AQI
In the last 24 hours,
Environmental Monitoring Supervision Center's AQI reached its highest point of 66 at 5 PM during the Day, while the lowest point, 53, was recorded at 11 AM during the Day between 20th Aug and 21st Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Environmental Monitoring Supervision Center, Langfang, Hebei, China
30°C23/37°C
30°C25/35°C
29°C25/35°C
30°C26/35°C
32°C27/38°C
30°C27/35°C
29°C24/36°C
27°C24/31°C
28°C23/34°C
27°C22/31°C
29°C23/35°C
30°C24/37°C
30°C25/36°C
27°C24/32°C
28°C24/34°C
32°C25/39°C
31°C25/37°C
24°C21/26°C
26°C19/32°C
28°C22/35°C
28°C23/34°C
26°C21/34°C
25°C20/31°C
27°C22/34°C
27°C23/32°C
24°C22/27°C
26°C21/31°C
27°C23/32°C
26°C24/30°C
26°C21/30°C
--°C/°C
68AQI
62AQI
64AQI
64AQI
2025 Days Vs Air Quality
Environmental Monitoring Supervision Center, Langfang, Hebei, China
78%
181
20%
47
1%
3
Total number of days with different AQI categories in last 233 days in 2025 (132 days remaining)
Under WHO’s Safe Air Quality Limits: 0%
Health Risk Level:
Extreme
In 2025, 0% of 233 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
Environmental Monitoring Supervision Center, Langfang, Hebei, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
93AQI
80AQI
83AQI
94AQI
90AQI
81AQI
74AQI
65AQI
61AQI
59AQI
61AQI
59AQI
77AQI
64AQI
69AQI
63AQI
79AQI
106AQI
86AQI
112AQI
96AQI
105AQI
100AQI
123AQI
132AQI
123AQI
100AQI
96AQI
133AQI
108AQI
122AQI
108AQI
105AQI
87AQI
80AQI
70AQI
67AQI
59AQI
56AQI
57AQI
92AQI
109AQI
92AQI
108AQI
110AQI
116AQI
91AQI
87AQI
85AQI
79AQI
79AQI
70AQI
67AQI
61AQI
70AQI
66AQI
82AQI
116AQI
130AQI
158AQI
123AQI
113AQI
108AQI
121AQI
102AQI
115AQI
124AQI
142AQI
153AQI
164AQI
128AQI
147AQI
126AQI
114AQI
98AQI
88AQI
82AQI
76AQI
68AQI
65AQI
64AQI
82AQI
68AQI
68AQI
82AQI
67AQI
71AQI
61AQI
67AQI
79AQI
73AQI
68AQI
80AQI
106AQI
77AQI
100AQI
88AQI
83AQI
84AQI
95AQI
113AQI
93AQI
91AQI
79AQI
80AQI
105AQI
93AQI
92AQI
88AQI
103AQI
120AQI
92AQI
98AQI
74AQI
82AQI
102AQI
80AQI
87AQI
85AQI
81AQI
75AQI
75AQI
64AQI
74AQI
82AQI
73AQI
91AQI
102AQI
82AQI
88AQI
89AQI
99AQI
97AQI
84AQI
81AQI
102AQI
77AQI
89AQI
92AQI
116AQI
107AQI
123AQI
113AQI
99AQI
97AQI
99AQI
101AQI
103AQI
101AQI
102AQI
103AQI
109AQI
96AQI
81AQI
74AQI
75AQI
72AQI
72AQI
72AQI
74AQI
69AQI
74AQI
81AQI
86AQI
85AQI
75AQI
68AQI
71AQI
76AQI
70AQI
66AQI
63AQI
58AQI
66AQI
72AQI
69AQI
70AQI
71AQI
72AQI
76AQI
71AQI
69AQI
70AQI
66AQI
69AQI
68AQI
63AQI
63AQI
63AQI
65AQI
67AQI
71AQI
71AQI
66AQI
66AQI
67AQI
66AQI
63AQI
65AQI
65AQI
63AQI
63AQI
66AQI
66AQI
64AQI
64AQI
64AQI
63AQI
63AQI
58AQI
58AQI
61AQI
66AQI
64AQI
61AQI
64AQI
63AQI
69AQI
69AQI
65AQI
58AQI
63AQI
64AQI
66AQI
61AQI
66AQI
68AQI
60AQI
62AQI
62AQI
60AQI
90AQI
86AQI
101AQI
90AQI
93AQI
74AQI
65AQI
64AQI
No. of days
202584AQI
Highest AQI recorded in
March101AQI
Lowest AQI recorded in
August64AQI
202423AQI
Highest AQI recorded in
November111AQI
Lowest AQI recorded in
September0AQI
20230AQI
Highest AQI recorded in
May1AQI
Lowest AQI recorded in
December0AQI
20220AQI
Highest AQI recorded in
July0AQI
Lowest AQI recorded in
December0AQI
202143AQI
Highest AQI recorded in
March155AQI
Lowest AQI recorded in
December0AQI
202095AQI
Highest AQI recorded in
October108AQI
Lowest AQI recorded in
May76AQI
Most & Least Polluted Years Over the Last 6 Years
Environmental Monitoring Supervision Center's annual 2025 AQI (84) shows an average percentage change of 211613.4% (worsened AQI) compared to previous years: 2020 (95), 2021 (43), 2022 (0), 2023 (0), 2024 (23).