Nagasaki, Nagasaki, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
March Air Quality Analysis
Nagasaki, Nagasaki, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (13th March):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 37 of Good air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 12th Mar - 13th Mar 2026
Nagasaki, Nagasaki, Japan
6 AM12th Mar 2026
6 PM
5 AM13th Mar 2026
72AQI
31AQI
59AQI
30AQI
In the last 24 hours,
Nagasaki's AQI reached its highest point of 72 at 10 AM during the Day, while the lowest point, 30, was recorded at 3 AM during the Night between 12th Mar and 13th Mar 2026.
Day & Night AQI Trend : Feb - Mar 2026
Nagasaki, Nagasaki, Japan
9°C7/12°C
10°C7/13°C
11°C9/13°C
14°C11/16°C
11°C9/14°C
10°C8/13°C
9°C8/11°C
9°C6/11°C
10°C8/13°C
12°C10/14°C
15°C12/18°C
12°C8/15°C
14°C9/17°C
13°C11/16°C
13°C10/17°C
13°C12/14°C
12°C10/15°C
12°C9/16°C
12°C11/12°C
12°C9/14°C
10°C7/13°C
10°C7/14°C
11°C8/14°C
7°C5/9°C
7°C5/11°C
9°C6/12°C
8°C6/12°C
8°C5/12°C
10°C7/14°C
8°C6/10°C
50AQI
37AQI
45AQI
34AQI
2026 Days Vs Air Quality
Nagasaki, Nagasaki, Japan
86%
62
14%
10
Total number of days with different AQI categories in last 73 days in 2026 (292 days remaining)
Under WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2026, 86% of 73 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Nagasaki, Nagasaki, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI (US)
25AQI (US)
29AQI (US)
45AQI (US)
49AQI (US)
32AQI (US)
39AQI (US)
30AQI (US)
21AQI (US)
36AQI (US)
28AQI (US)
23AQI (US)
40AQI (US)
31AQI (US)
42AQI (US)
57AQI (US)
60AQI (US)
65AQI (US)
69AQI (US)
45AQI (US)
19AQI (US)
23AQI (US)
38AQI (US)
45AQI (US)
26AQI (US)
15AQI (US)
44AQI (US)
22AQI (US)
33AQI (US)
30AQI (US)
13AQI (US)
54AQI (US)
32AQI (US)
32AQI (US)
32AQI (US)
39AQI (US)
47AQI (US)
29AQI (US)
19AQI (US)
34AQI (US)
37AQI (US)
44AQI (US)
50AQI (US)
39AQI (US)
42AQI (US)
52AQI (US)
62AQI (US)
28AQI (US)
29AQI (US)
41AQI (US)
31AQI (US)
41AQI (US)
38AQI (US)
35AQI (US)
28AQI (US)
24AQI (US)
25AQI (US)
48AQI (US)
39AQI (US)
35AQI (US)
54AQI (US)
18AQI (US)
32AQI (US)
46AQI (US)
48AQI (US)
52AQI (US)
37AQI (US)
46AQI (US)
46AQI (US)
37AQI (US)
53AQI (US)
37AQI (US)
35AQI (US)
38AQI (US)
42AQI (US)
No. of days
202637AQI (US)
Highest AQI (US) recorded in
March42AQI (US)
Lowest AQI (US) recorded in
January35AQI (US)
202544AQI (US)
Highest AQI (US) recorded in
October54AQI (US)
Lowest AQI (US) recorded in
September31AQI (US)
202441AQI (US)
Highest AQI (US) recorded in
April52AQI (US)
Lowest AQI (US) recorded in
July28AQI (US)
202343AQI (US)
Highest AQI (US) recorded in
April53AQI (US)
Lowest AQI (US) recorded in
August34AQI (US)
202242AQI (US)
Highest AQI (US) recorded in
May49AQI (US)
Lowest AQI (US) recorded in
August36AQI (US)
202142AQI (US)
Highest AQI (US) recorded in
May50AQI (US)
Lowest AQI (US) recorded in
July33AQI (US)
202042AQI (US)
Highest AQI (US) recorded in
August52AQI (US)
Lowest AQI (US) recorded in
July31AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Nagasaki's annual 2026 AQI (US) (37) shows an average percentage change of -11.9% (improved AQI (US)) compared to previous years: 2020 (42), 2021 (42), 2022 (42), 2023 (43), 2024 (41), 2025 (44).