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!
September Air Quality Analysis
Tehran, Tehran Province, Iran
AQI Trends: Highest and Lowest
Same Day Analysis (19th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 74 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 19th Sep - 20th Sep 2025
Tehran, Tehran Province, Iran
6 AM19th Sep 2025
7 PM
5 AM20th Sep 2025
69AQI
54AQI
86AQI
68AQI
In the last 24 hours,
Tehran's AQI reached its highest point of 86 at 3 AM during the Night, while the lowest point, 54, was recorded at 9 AM during the Day between 19th Sep and 20th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Tehran, Tehran Province, Iran
31°C26/35°C
32°C28/35°C
31°C27/34°C
31°C27/35°C
31°C27/34°C
30°C26/32°C
31°C27/33°C
30°C25/33°C
29°C25/32°C
29°C26/32°C
29°C25/32°C
29°C25/33°C
28°C24/31°C
28°C23/31°C
30°C25/33°C
31°C27/33°C
30°C27/33°C
30°C27/33°C
30°C27/34°C
30°C27/34°C
32°C28/34°C
30°C28/32°C
27°C24/30°C
25°C22/28°C
25°C22/28°C
24°C22/27°C
24°C21/27°C
25°C22/29°C
25°C21/28°C
27°C22/31°C
--°C/°C
82AQI
77AQI
79AQI
78AQI
2025 Days Vs Air Quality
Tehran, Tehran Province, Iran
79%
90
21%
24
Total number of days with different AQI categories in last 263 days in 2025 (102 days remaining)
Under WHO’s Safe Air Quality Limits: 0%
Health Risk Level:
Extreme
In 2025, 0% of 263 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
Tehran, Tehran Province, Iran
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
75AQI
79AQI
73AQI
72AQI
77AQI
69AQI
71AQI
69AQI
73AQI
75AQI
81AQI
76AQI
76AQI
81AQI
79AQI
87AQI
87AQI
80AQI
82AQI
88AQI
102AQI
105AQI
95AQI
98AQI
105AQI
100AQI
98AQI
99AQI
108AQI
102AQI
107AQI
113AQI
116AQI
116AQI
117AQI
114AQI
113AQI
109AQI
124AQI
116AQI
117AQI
101AQI
104AQI
110AQI
108AQI
103AQI
101AQI
92AQI
87AQI
85AQI
85AQI
84AQI
83AQI
85AQI
85AQI
82AQI
83AQI
77AQI
71AQI
69AQI
72AQI
79AQI
79AQI
86AQI
91AQI
89AQI
89AQI
91AQI
92AQI
89AQI
85AQI
82AQI
83AQI
82AQI
92AQI
88AQI
92AQI
85AQI
82AQI
89AQI
83AQI
88AQI
95AQI
93AQI
103AQI
92AQI
89AQI
103AQI
93AQI
87AQI
75AQI
79AQI
84AQI
75AQI
78AQI
66AQI
76AQI
77AQI
67AQI
81AQI
78AQI
78AQI
81AQI
82AQI
80AQI
80AQI
76AQI
75AQI
74AQI
72AQI
71AQI
71AQI
68AQI
74AQI
76AQI
89AQI
95AQI
88AQI
75AQI
No. of days
202588AQI
Highest AQI recorded in
July95AQI
Lowest AQI recorded in
September75AQI
Most & Least Polluted Years Over the Last 1 Years
Tehran's annual 2025 AQI (88) shows an average percentage change of NaN% (improved AQI) compared to previous years: .