Heilongtan, Meishan, Sichuan, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
February Air Quality Analysis
Heilongtan, Meishan, Sichuan, China
AQI Trends: Highest and Lowest
Same Day Analysis (15th February):
On this day, AQI across the 3 years varied significantly: 2026 ranks 1st highest AQI at 132 of Poor air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 14th Feb - 15th Feb 2026
Heilongtan, Meishan, Sichuan, China
7 AM14th Feb 2026
6 PM
6 AM15th Feb 2026
150AQI
122AQI
164AQI
125AQI
In the last 24 hours,
Heilongtan's AQI reached its highest point of 164 at 5 AM during the Night, while the lowest point, 122, was recorded at 5 PM during the Day between 14th Feb and 15th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Heilongtan, Meishan, Sichuan, China
13°C9/18°C
13°C9/18°C
11°C6/14°C
5°C3/7°C
4°C3/5°C
5°C2/9°C
7°C6/9°C
8°C6/10°C
7°C6/9°C
9°C5/13°C
9°C6/13°C
10°C8/13°C
10°C9/14°C
9°C8/12°C
8°C5/12°C
10°C6/12°C
10°C7/14°C
11°C9/13°C
11°C10/14°C
12°C9/16°C
13°C9/17°C
10°C8/12°C
8°C6/10°C
8°C6/11°C
10°C7/14°C
11°C7/15°C
12°C8/16°C
14°C11/18°C
14°C10/18°C
14°C11/17°C
132AQI
115AQI
137AQI
119AQI
2026 Days Vs Air Quality
Heilongtan, Meishan, Sichuan, China
24%
11
43%
20
33%
15
Total number of days with different AQI categories in last 47 days in 2026 (318 days remaining)
Under WHO’s Safe Air Quality Limits: 0%
Health Risk Level:
Extreme
In 2026, 0% of 47 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
Heilongtan, Meishan, Sichuan, China
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
71AQI (US)
98AQI (US)
53AQI (US)
72AQI (US)
132AQI (US)
104AQI (US)
122AQI (US)
140AQI (US)
154AQI (US)
169AQI (US)
186AQI (US)
190AQI (US)
186AQI (US)
170AQI (US)
158AQI (US)
166AQI (US)
180AQI (US)
190AQI (US)
126AQI (US)
54AQI (US)
95AQI (US)
115AQI (US)
89AQI (US)
149AQI (US)
148AQI (US)
132AQI (US)
146AQI (US)
145AQI (US)
156AQI (US)
116AQI (US)
138AQI (US)
146AQI (US)
146AQI (US)
153AQI (US)
151AQI (US)
156AQI (US)
154AQI (US)
131AQI (US)
77AQI (US)
72AQI (US)
81AQI (US)
94AQI (US)
122AQI (US)
131AQI (US)
147AQI (US)
132AQI (US)
134AQI (US)
126AQI (US)
No. of days
2026131AQI (US)
Highest AQI (US) recorded in
January134AQI (US)
Lowest AQI (US) recorded in
February126AQI (US)
202589AQI (US)
Highest AQI (US) recorded in
January147AQI (US)
Lowest AQI (US) recorded in
July52AQI (US)
202481AQI (US)
Highest AQI (US) recorded in
January152AQI (US)
Lowest AQI (US) recorded in
March13AQI (US)
2023134AQI (US)
Highest AQI (US) recorded in
December135AQI (US)
Lowest AQI (US) recorded in
November119AQI (US)
2022106AQI (US)
Highest AQI (US) recorded in
January144AQI (US)
Lowest AQI (US) recorded in
May43AQI (US)
202183AQI (US)
Highest AQI (US) recorded in
January131AQI (US)
Lowest AQI (US) recorded in
September53AQI (US)
202078AQI (US)
Highest AQI (US) recorded in
December109AQI (US)
Lowest AQI (US) recorded in
July59AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Heilongtan's annual 2026 AQI (US) (131) shows an average percentage change of 43.03% (worsened AQI (US)) compared to previous years: 2020 (78), 2021 (83), 2022 (106), 2023 (134), 2024 (81), 2025 (89).