Muar, Johor, Malaysia 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
Muar, Johor, Malaysia
AQI Trends: Highest and Lowest
Same Day Analysis (21st September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 61 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 21st Sep - 22nd Sep 2025
Muar, Johor, Malaysia
7 AM21st Sep 2025
7 PM
6 AM22nd Sep 2025
79AQI
50AQI
64AQI
57AQI
In the last 24 hours,
Muar's AQI reached its highest point of 79 at 10 AM during the Day, while the lowest point, 50, was recorded at 5 PM during the Day between 21st Sep and 22nd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Muar, Johor, Malaysia
28°C23/35°C
27°C23/33°C
26°C23/32°C
28°C23/34°C
28°C23/35°C
26°C23/31°C
27°C22/33°C
27°C24/32°C
27°C24/33°C
25°C23/29°C
25°C23/27°C
26°C22/30°C
26°C23/31°C
27°C22/33°C
27°C23/33°C
25°C23/28°C
26°C23/33°C
26°C23/30°C
27°C23/34°C
25°C23/30°C
25°C22/29°C
24°C23/26°C
27°C22/33°C
26°C22/31°C
27°C23/32°C
25°C22/29°C
27°C23/32°C
26°C22/32°C
26°C23/32°C
27°C23/32°C
--°C/°C
59AQI
56AQI
59AQI
56AQI
2025 Days Vs Air Quality
Muar, Johor, Malaysia
20%
54
80%
210
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Under WHO’s Safe Air Quality Limits: 20%
Health Risk Level:
Very high
In 2025, 20% of 265 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.
Annual Air Quality Insights
Muar, Johor, Malaysia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
56AQI
57AQI
57AQI
57AQI
57AQI
57AQI
57AQI
57AQI
56AQI
56AQI
55AQI
54AQI
55AQI
55AQI
56AQI
56AQI
55AQI
56AQI
56AQI
57AQI
57AQI
57AQI
58AQI
58AQI
58AQI
59AQI
59AQI
59AQI
58AQI
59AQI
59AQI
60AQI
61AQI
62AQI
62AQI
62AQI
62AQI
63AQI
62AQI
62AQI
62AQI
61AQI
61AQI
60AQI
61AQI
62AQI
62AQI
63AQI
63AQI
62AQI
62AQI
61AQI
61AQI
61AQI
60AQI
59AQI
58AQI
58AQI
57AQI
57AQI
56AQI
57AQI
56AQI
56AQI
56AQI
56AQI
55AQI
54AQI
54AQI
54AQI
54AQI
54AQI
53AQI
54AQI
53AQI
52AQI
51AQI
51AQI
51AQI
52AQI
53AQI
53AQI
53AQI
54AQI
55AQI
55AQI
56AQI
57AQI
57AQI
57AQI
57AQI
56AQI
56AQI
55AQI
55AQI
54AQI
54AQI
54AQI
54AQI
54AQI
53AQI
53AQI
52AQI
52AQI
52AQI
52AQI
52AQI
52AQI
52AQI
52AQI
52AQI
52AQI
51AQI
51AQI
51AQI
51AQI
51AQI
51AQI
51AQI
51AQI
51AQI
52AQI
52AQI
53AQI
53AQI
54AQI
53AQI
55AQI
54AQI
54AQI
54AQI
52AQI
51AQI
53AQI
52AQI
53AQI
53AQI
52AQI
51AQI
51AQI
51AQI
49AQI
49AQI
48AQI
48AQI
45AQI
44AQI
44AQI
44AQI
46AQI
49AQI
49AQI
49AQI
50AQI
50AQI
51AQI
51AQI
51AQI
49AQI
48AQI
47AQI
48AQI
47AQI
47AQI
44AQI
43AQI
41AQI
42AQI
41AQI
41AQI
41AQI
41AQI
39AQI
39AQI
38AQI
39AQI
40AQI
41AQI
41AQI
43AQI
44AQI
45AQI
45AQI
48AQI
47AQI
48AQI
48AQI
47AQI
49AQI
49AQI
49AQI
50AQI
50AQI
50AQI
51AQI
50AQI
51AQI
52AQI
52AQI
52AQI
52AQI
52AQI
52AQI
52AQI
52AQI
53AQI
53AQI
54AQI
53AQI
55AQI
54AQI
55AQI
56AQI
56AQI
56AQI
56AQI
52AQI
58AQI
63AQI
68AQI
71AQI
67AQI
60AQI
58AQI
59AQI
60AQI
56AQI
59AQI
59AQI
60AQI
59AQI
62AQI
63AQI
68AQI
65AQI
61AQI
60AQI
60AQI
67AQI
59AQI
64AQI
60AQI
60AQI
56AQI
54AQI
56AQI
43AQI
49AQI
52AQI
51AQI
57AQI
54AQI
58AQI
57AQI
53AQI
53AQI
56AQI
51AQI
52AQI
48AQI
55AQI
61AQI
62AQI
61AQI
57AQI
61AQI
54AQI
53AQI
51AQI
45AQI
51AQI
61AQI
54AQI
No. of days
202554AQI
Highest AQI recorded in
February61AQI
Lowest AQI recorded in
June45AQI
202424AQI
Highest AQI recorded in
June56AQI
Lowest AQI recorded in
September0AQI
20230AQI
Highest AQI recorded in
February0AQI
Lowest AQI recorded in
December0AQI
20220AQI
Highest AQI recorded in
January0AQI
Lowest AQI recorded in
November0AQI
202120AQI
Highest AQI recorded in
March58AQI
Lowest AQI recorded in
December0AQI
202049AQI
Highest AQI recorded in
October54AQI
Lowest AQI recorded in
November42AQI
Most & Least Polluted Years Over the Last 6 Years
Muar's annual 2025 AQI (54) shows an average percentage change of 101.1% (worsened AQI) compared to previous years: 2020 (49), 2021 (20), 2022 (0), 2023 (0), 2024 (24).