Joetsu, Niigata, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
June Air Quality Analysis
Joetsu, Niigata, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (3rd June):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 21 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: 2nd Jun - 3rd Jun 2026
Joetsu, Niigata, Japan
4 AM2nd Jun 2026
6 PM
3 AM3rd Jun 2026
55AQI
38AQI
53AQI
31AQI
In the last 24 hours,
Joetsu's AQI reached its highest point of 55 at 1 PM during the Day, while the lowest point, 31, was recorded at 2 AM during the Night between 2nd Jun and 3rd Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Joetsu, Niigata, Japan
12°C6/16°C
14°C9/18°C
16°C11/20°C
15°C10/20°C
11°C8/16°C
13°C7/18°C
15°C10/20°C
16°C12/20°C
16°C12/20°C
15°C11/19°C
15°C10/19°C
15°C11/20°C
16°C12/21°C
18°C13/24°C
19°C16/25°C
18°C15/23°C
16°C15/18°C
17°C14/18°C
17°C11/22°C
16°C14/20°C
18°C14/22°C
19°C16/24°C
20°C17/24°C
20°C17/25°C
16°C12/18°C
18°C11/24°C
20°C15/25°C
20°C16/26°C
19°C16/22°C
17°C16/19°C
47AQI
39AQI
44AQI
37AQI
2026 Days Vs Air Quality
Joetsu, Niigata, Japan
79%
122
21%
32
Total number of days with different AQI categories in last 154 days in 2026 (211 days remaining)
Under WHO’s Safe Air Quality Limits: 79%
Health Risk Level:
Low
In 2026, 79% of 154 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
Joetsu, Niigata, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
19AQI (US)
23AQI (US)
27AQI (US)
34AQI (US)
28AQI (US)
26AQI (US)
26AQI (US)
29AQI (US)
28AQI (US)
31AQI (US)
27AQI (US)
28AQI (US)
29AQI (US)
21AQI (US)
32AQI (US)
52AQI (US)
45AQI (US)
33AQI (US)
47AQI (US)
30AQI (US)
21AQI (US)
23AQI (US)
34AQI (US)
33AQI (US)
43AQI (US)
27AQI (US)
35AQI (US)
31AQI (US)
27AQI (US)
38AQI (US)
41AQI (US)
32AQI (US)
35AQI (US)
31AQI (US)
35AQI (US)
41AQI (US)
42AQI (US)
23AQI (US)
13AQI (US)
35AQI (US)
41AQI (US)
48AQI (US)
40AQI (US)
45AQI (US)
61AQI (US)
55AQI (US)
50AQI (US)
19AQI (US)
31AQI (US)
31AQI (US)
33AQI (US)
44AQI (US)
43AQI (US)
54AQI (US)
44AQI (US)
24AQI (US)
11AQI (US)
43AQI (US)
37AQI (US)
38AQI (US)
71AQI (US)
41AQI (US)
14AQI (US)
62AQI (US)
54AQI (US)
46AQI (US)
45AQI (US)
50AQI (US)
56AQI (US)
56AQI (US)
63AQI (US)
34AQI (US)
48AQI (US)
59AQI (US)
56AQI (US)
56AQI (US)
43AQI (US)
34AQI (US)
39AQI (US)
59AQI (US)
47AQI (US)
51AQI (US)
72AQI (US)
51AQI (US)
22AQI (US)
22AQI (US)
54AQI (US)
59AQI (US)
63AQI (US)
42AQI (US)
44AQI (US)
19AQI (US)
40AQI (US)
46AQI (US)
33AQI (US)
26AQI (US)
31AQI (US)
29AQI (US)
30AQI (US)
43AQI (US)
41AQI (US)
30AQI (US)
30AQI (US)
38AQI (US)
51AQI (US)
29AQI (US)
30AQI (US)
36AQI (US)
33AQI (US)
36AQI (US)
44AQI (US)
27AQI (US)
21AQI (US)
32AQI (US)
45AQI (US)
51AQI (US)
50AQI (US)
41AQI (US)
40AQI (US)
39AQI (US)
47AQI (US)
54AQI (US)
45AQI (US)
25AQI (US)
29AQI (US)
29AQI (US)
31AQI (US)
26AQI (US)
26AQI (US)
28AQI (US)
31AQI (US)
36AQI (US)
39AQI (US)
33AQI (US)
34AQI (US)
82AQI (US)
67AQI (US)
53AQI (US)
48AQI (US)
61AQI (US)
61AQI (US)
61AQI (US)
55AQI (US)
59AQI (US)
50AQI (US)
41AQI (US)
52AQI (US)
28AQI (US)
19AQI (US)
24AQI (US)
29AQI (US)
45AQI (US)
46AQI (US)
21AQI (US)
31AQI (US)
37AQI (US)
49AQI (US)
36AQI (US)
42AQI (US)
37AQI (US)
No. of days
202639AQI (US)
Highest AQI (US) recorded in
March49AQI (US)
Lowest AQI (US) recorded in
January31AQI (US)
202541AQI (US)
Highest AQI (US) recorded in
October50AQI (US)
Lowest AQI (US) recorded in
September30AQI (US)
202439AQI (US)
Highest AQI (US) recorded in
April52AQI (US)
Lowest AQI (US) recorded in
December27AQI (US)
202341AQI (US)
Highest AQI (US) recorded in
April50AQI (US)
Lowest AQI (US) recorded in
December32AQI (US)
202239AQI (US)
Highest AQI (US) recorded in
May50AQI (US)
Lowest AQI (US) recorded in
December30AQI (US)
202137AQI (US)
Highest AQI (US) recorded in
June48AQI (US)
Lowest AQI (US) recorded in
December27AQI (US)
202034AQI (US)
Highest AQI (US) recorded in
August54AQI (US)
Lowest AQI (US) recorded in
December21AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Joetsu's annual 2026 AQI (US) (39) shows an average percentage change of 1.7% (worsened AQI (US)) compared to previous years: 2020 (34), 2021 (37), 2022 (39), 2023 (41), 2024 (39), 2025 (41).