Heyuan, Guangdong Province, China 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
Heyuan, Guangdong Province, China
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 49 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 20th Sep - 21st Sep 2025
Heyuan, Guangdong Province, China
6 AM20th Sep 2025
6 PM
5 AM21st Sep 2025
AQI
AQI
53AQI
17AQI
In the last 24 hours,
Heyuan's AQI reached its highest point of 53 at 6 AM during the Night, while the lowest point, 17, was recorded at 10 AM during the Night between 20th Sep and 21st Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Heyuan, Guangdong Province, China
28°C23/34°C
28°C23/35°C
27°C23/33°C
28°C23/34°C
27°C21/34°C
27°C21/33°C
27°C23/33°C
27°C22/34°C
27°C22/34°C
28°C23/35°C
27°C22/34°C
27°C22/35°C
28°C22/35°C
27°C21/35°C
28°C23/34°C
28°C23/36°C
26°C22/33°C
24°C21/29°C
25°C21/30°C
26°C21/33°C
26°C22/32°C
27°C21/35°C
28°C22/35°C
27°C22/36°C
27°C21/35°C
27°C21/35°C
27°C21/35°C
26°C21/34°C
23°C21/25°C
--°C/°C
--°C/°C
54AQI
45AQI
54AQI
49AQI
2025 Days Vs Air Quality
Heyuan, Guangdong Province, China
47%
54
53%
60
Total number of days with different AQI categories in last 263 days in 2025 (102 days remaining)
Under WHO’s Safe Air Quality Limits: 47%
Health Risk Level:
Significant
In 2025, 47% of 263 days were within WHO’s safe air quality limits, and 53% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Heyuan, Guangdong Province, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
32AQI
48AQI
53AQI
58AQI
56AQI
45AQI
60AQI
59AQI
64AQI
65AQI
59AQI
61AQI
59AQI
54AQI
53AQI
50AQI
47AQI
44AQI
43AQI
40AQI
46AQI
44AQI
42AQI
39AQI
37AQI
40AQI
42AQI
46AQI
46AQI
44AQI
43AQI
43AQI
42AQI
43AQI
42AQI
46AQI
52AQI
55AQI
53AQI
59AQI
60AQI
61AQI
54AQI
50AQI
52AQI
53AQI
55AQI
57AQI
58AQI
61AQI
59AQI
56AQI
50AQI
48AQI
46AQI
47AQI
49AQI
52AQI
54AQI
56AQI
53AQI
54AQI
54AQI
52AQI
56AQI
52AQI
51AQI
51AQI
46AQI
44AQI
48AQI
49AQI
53AQI
51AQI
51AQI
57AQI
57AQI
48AQI
45AQI
48AQI
49AQI
45AQI
41AQI
43AQI
45AQI
49AQI
52AQI
50AQI
49AQI
50AQI
51AQI
51AQI
52AQI
50AQI
53AQI
54AQI
55AQI
56AQI
51AQI
60AQI
62AQI
59AQI
48AQI
46AQI
45AQI
47AQI
49AQI
50AQI
54AQI
54AQI
51AQI
54AQI
51AQI
49AQI
44AQI
49AQI
53AQI
50AQI
52AQI
No. of days
202551AQI
Highest AQI recorded in
July53AQI
Lowest AQI recorded in
May44AQI
Most & Least Polluted Years Over the Last 1 Years
Heyuan's annual 2025 AQI (51) shows an average percentage change of NaN% (improved AQI) compared to previous years: .