Saint Denis, Reunion General , Reunion Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Saint Denis, Reunion General , Reunion
AQI Trends: Highest and Lowest
Same Day Analysis (2nd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 65 of Moderate air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report
2025 Days Vs Air Quality
Saint Denis, Reunion General , Reunion
98%
209
2%
5
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2025, 98% of 215 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Saint Denis, Reunion General , Reunion
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
45AQI
36AQI
31AQI
33AQI
27AQI
31AQI
31AQI
26AQI
30AQI
26AQI
31AQI
41AQI
33AQI
37AQI
30AQI
26AQI
27AQI
24AQI
27AQI
23AQI
29AQI
58AQI
32AQI
33AQI
28AQI
32AQI
32AQI
31AQI
28AQI
29AQI
34AQI
39AQI
34AQI
35AQI
25AQI
37AQI
35AQI
31AQI
34AQI
39AQI
28AQI
30AQI
28AQI
31AQI
24AQI
32AQI
22AQI
26AQI
27AQI
25AQI
23AQI
24AQI
27AQI
28AQI
23AQI
22AQI
26AQI
61AQI
41AQI
38AQI
45AQI
38AQI
41AQI
32AQI
31AQI
35AQI
41AQI
39AQI
30AQI
30AQI
29AQI
29AQI
24AQI
28AQI
26AQI
26AQI
25AQI
26AQI
29AQI
24AQI
27AQI
27AQI
22AQI
24AQI
22AQI
24AQI
21AQI
21AQI
23AQI
21AQI
27AQI
24AQI
23AQI
27AQI
19AQI
19AQI
20AQI
22AQI
22AQI
21AQI
22AQI
29AQI
26AQI
26AQI
26AQI
25AQI
22AQI
22AQI
19AQI
23AQI
21AQI
25AQI
26AQI
23AQI
23AQI
27AQI
22AQI
28AQI
23AQI
28AQI
28AQI
26AQI
24AQI
27AQI
33AQI
34AQI
30AQI
37AQI
27AQI
33AQI
30AQI
33AQI
29AQI
32AQI
34AQI
33AQI
36AQI
36AQI
37AQI
35AQI
31AQI
31AQI
30AQI
33AQI
39AQI
34AQI
32AQI
32AQI
32AQI
31AQI
32AQI
30AQI
29AQI
30AQI
28AQI
29AQI
27AQI
26AQI
29AQI
28AQI
33AQI
32AQI
32AQI
30AQI
31AQI
34AQI
35AQI
36AQI
38AQI
34AQI
33AQI
29AQI
27AQI
30AQI
31AQI
29AQI
30AQI
31AQI
36AQI
30AQI
34AQI
33AQI
41AQI
27AQI
28AQI
29AQI
34AQI
30AQI
29AQI
30AQI
33AQI
32AQI
36AQI
38AQI
31AQI
28AQI
28AQI
29AQI
26AQI
26AQI
31AQI
29AQI
35AQI
26AQI
23AQI
25AQI
23AQI
23AQI
24AQI
29AQI
25AQI
54AQI
81AQI
65AQI
32AQI
31AQI
29AQI
24AQI
32AQI
31AQI
30AQI
73AQI
No. of days
202530AQI
Highest AQI recorded in
August73AQI
Lowest AQI recorded in
April24AQI
202427AQI
Highest AQI recorded in
July63AQI
Lowest AQI recorded in
February19AQI
202324AQI
Highest AQI recorded in
March29AQI
Lowest AQI recorded in
April20AQI
202227AQI
Highest AQI recorded in
August37AQI
Lowest AQI recorded in
July22AQI
202122AQI
Highest AQI recorded in
October34AQI
Lowest AQI recorded in
February8AQI
202020AQI
Highest AQI recorded in
October23AQI
Lowest AQI recorded in
June18AQI
Most & Least Polluted Years Over the Last 6 Years
Saint Denis's annual 2025 AQI (30) shows an average percentage change of 27.8% (worsened AQI) compared to previous years: 2020 (20), 2021 (22), 2022 (27), 2023 (24), 2024 (27).
