District 21, Tehran, Tehran Province, Iran 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
District 21, Tehran, Tehran Province, Iran
AQI Trends: Highest and Lowest
Same Day Analysis (3rd August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 89 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Aug - 5th Aug 2025
District 21, Tehran, Tehran Province, Iran
6 AM4th Aug 2025
8 PM
5 AM5th Aug 2025
AQI
AQI
108AQI
83AQI
In the last 24 hours,
District 21's AQI reached its highest point of 108 at 4 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
District 21, Tehran, Tehran Province, Iran
31°C27/35°C
29°C26/33°C
29°C25/32°C
30°C26/33°C
30°C27/35°C
31°C28/34°C
32°C28/35°C
28°C25/30°C
27°C24/31°C
30°C25/33°C
31°C27/35°C
33°C28/36°C
34°C30/37°C
33°C29/36°C
33°C29/36°C
33°C29/37°C
33°C28/37°C
32°C29/35°C
31°C27/34°C
32°C29/35°C
32°C29/35°C
31°C28/34°C
32°C27/36°C
33°C29/37°C
33°C30/35°C
32°C29/35°C
31°C26/35°C
32°C28/35°C
33°C29/36°C
--°C/°C
--°C/°C
92AQI
88AQI
92AQI
92AQI
2025 Days Vs Air Quality
District 21, Tehran, Tehran Province, Iran
69%
46
31%
21
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Under WHO’s Safe Air Quality Limits: 0%
Health Risk Level:
Extreme
In 2025, 0% of 216 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
District 21, Tehran, Tehran Province, Iran
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
74AQI
78AQI
74AQI
73AQI
74AQI
68AQI
70AQI
69AQI
72AQI
74AQI
82AQI
75AQI
74AQI
80AQI
81AQI
85AQI
83AQI
79AQI
83AQI
88AQI
102AQI
106AQI
95AQI
96AQI
96AQI
97AQI
100AQI
100AQI
110AQI
103AQI
106AQI
111AQI
114AQI
116AQI
115AQI
113AQI
110AQI
111AQI
123AQI
116AQI
119AQI
103AQI
110AQI
120AQI
115AQI
110AQI
104AQI
94AQI
89AQI
86AQI
85AQI
83AQI
83AQI
84AQI
86AQI
84AQI
85AQI
78AQI
72AQI
69AQI
72AQI
80AQI
79AQI
84AQI
91AQI
89AQI
89AQI
75AQI
88AQI
96AQI
90AQI
No. of days
202591AQI
Highest AQI recorded in
July96AQI
Lowest AQI recorded in
May75AQI
Most & Least Polluted Years Over the Last 1 Years
District 21's annual 2025 AQI (91) shows an average percentage change of NaN% (improved AQI) compared to previous years: .