Karaj, Alborz 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
Karaj, Alborz Province, Iran
AQI Trends: Highest and Lowest
Same Day Analysis (18th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 68 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
Karaj, Alborz Province, Iran
6 AM19th Sep 2025
7 PM
5 AM20th Sep 2025
AQI
AQI
85AQI
55AQI
In the last 24 hours,
Karaj's AQI reached its highest point of 85 at 1 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 19th Sep and 20th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Karaj, Alborz Province, Iran
30°C24/34°C
28°C23/33°C
27°C21/32°C
29°C23/33°C
29°C24/33°C
28°C22/32°C
28°C23/32°C
27°C21/31°C
25°C20/30°C
26°C20/30°C
27°C23/31°C
27°C22/32°C
25°C19/29°C
26°C21/30°C
28°C22/32°C
28°C22/32°C
26°C21/32°C
27°C21/32°C
27°C21/32°C
27°C20/33°C
29°C24/34°C
25°C21/31°C
23°C19/28°C
22°C17/27°C
22°C18/26°C
20°C16/25°C
22°C15/26°C
22°C18/27°C
23°C17/27°C
--°C/°C
--°C/°C
81AQI
81AQI
82AQI
78AQI
2025 Days Vs Air Quality
Karaj, Alborz Province, Iran
77%
87
23%
26
Total number of days with different AQI categories in last 262 days in 2025 (103 days remaining)
Under WHO’s Safe Air Quality Limits: 0%
Health Risk Level:
Extreme
In 2025, 0% of 262 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
Karaj, Alborz Province, Iran
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
77AQI
71AQI
69AQI
69AQI
70AQI
70AQI
76AQI
69AQI
74AQI
75AQI
83AQI
65AQI
64AQI
70AQI
75AQI
80AQI
79AQI
83AQI
81AQI
92AQI
108AQI
109AQI
102AQI
111AQI
136AQI
110AQI
97AQI
100AQI
110AQI
106AQI
111AQI
119AQI
124AQI
120AQI
124AQI
111AQI
108AQI
104AQI
119AQI
117AQI
118AQI
99AQI
101AQI
118AQI
117AQI
114AQI
106AQI
94AQI
88AQI
86AQI
85AQI
86AQI
83AQI
83AQI
85AQI
82AQI
81AQI
75AQI
73AQI
67AQI
70AQI
76AQI
78AQI
83AQI
86AQI
86AQI
87AQI
90AQI
92AQI
90AQI
85AQI
81AQI
79AQI
82AQI
91AQI
86AQI
89AQI
84AQI
80AQI
90AQI
84AQI
87AQI
93AQI
92AQI
102AQI
93AQI
87AQI
101AQI
96AQI
89AQI
77AQI
78AQI
85AQI
78AQI
81AQI
66AQI
76AQI
80AQI
65AQI
84AQI
80AQI
81AQI
82AQI
79AQI
80AQI
81AQI
77AQI
75AQI
75AQI
75AQI
71AQI
71AQI
68AQI
72AQI
91AQI
95AQI
87AQI
76AQI
No. of days
202588AQI
Highest AQI recorded in
July95AQI
Lowest AQI recorded in
May72AQI
Most & Least Polluted Years Over the Last 1 Years
Karaj's annual 2025 AQI (88) shows an average percentage change of NaN% (improved AQI) compared to previous years: .