• October 21, 2026
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Last updated on October 1st, 2026 at 09:45 am

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Air Quality Japan Prefecture

Japan Prefecture AQI – Detailed Air Quality

Display current air quality index and forecast for the upcoming days in Japan Prefecture.

Today’s Air Quality Index (AQI)
Real-time PM2.5, PM10 air pollution level in Japan
8:46 AM, October 21, 2026
Last updated on: 8:46 AM
Live AQI 4
Air Quality is Good
PM₂.₅: 0.8µg/m³ PM₁₀: 1.38µg/m³
Good Air is clean and safe. No health risks expected. Everyone can enjoy outdoor activities without concern.
Good Moderate Poor Unhealthy Severe Hazardous 0 50 100 150 200 250 300+
Air Quality Hourly Forecast
4
Min at 8:00 AM on Oct 20
20
Max at 6:00 AM on Oct 21, 2026

Japan Prefecture Historical Air Quality Data

Display historical AQI data calendar by selecting a specific date and location Japan Prefecture.

Japan Historical Air Quality Data

Explore historical AQI data and pollutant changes over time.
Oct 21, 2026 8:46 AM
SUNMONTUEWEDTHUFRISAT
30
64
Moderate
PM2.5: 14
AQI
64
Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.
PM₂.₅ 14 µg/m3
PM₁₀ 17 µg/m3
SO₂ 7 µg/m3
NO₂ 20 µg/m3
O₃ 41 µg/m3
CO 176 µg/m3
AQI Hourly Forecast Graph
24
Min at 1:00 AM on Aug 30
87
Max at 10:00 PM on Aug 30, 2026
31
84
Moderate
PM2.5: 20
AQI
84
Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.
PM₂.₅ 20 µg/m3
PM₁₀ 26 µg/m3
SO₂ 10 µg/m3
NO₂ 30 µg/m3
O₃ 41 µg/m3
CO 219 µg/m3
AQI Hourly Forecast Graph
67
Min at 12:00 AM on Aug 31
102
Max at 3:00 AM on Aug 31, 2026
01
87
Moderate
PM2.5: 21
AQI
87
Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.
PM₂.₅ 21 µg/m3
PM₁₀ 27 µg/m3
SO₂ 10 µg/m3
NO₂ 20 µg/m3
O₃ 73 µg/m3
CO 215 µg/m3
AQI Hourly Forecast Graph
63
Min at 2:00 AM on Sep 1
106
Max at 9:00 PM on Sep 1, 2026
02
71
Moderate
PM2.5: 16
AQI
71
Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.
PM₂.₅ 16 µg/m3
PM₁₀ 19 µg/m3
SO₂ 6 µg/m3
NO₂ 11 µg/m3
O₃ 81 µg/m3
CO 188 µg/m3
AQI Hourly Forecast Graph
48
Min at 2:00 PM on Sep 2
101
Max at 1:00 AM on Sep 2, 2026
03
50
Good
PM2.5: 10
AQI
50
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 10 µg/m3
PM₁₀ 11 µg/m3
SO₂ 4 µg/m3
NO₂ 15 µg/m3
O₃ 47 µg/m3
CO 172 µg/m3
AQI Hourly Forecast Graph
35
Min at 8:00 AM on Sep 3
56
Max at 12:00 AM on Sep 3, 2026
04
74
Moderate
PM2.5: 17
AQI
74
Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.
PM₂.₅ 17 µg/m3
PM₁₀ 17 µg/m3
SO₂ 5 µg/m3
NO₂ 24 µg/m3
O₃ 36 µg/m3
CO 202 µg/m3
AQI Hourly Forecast Graph
38
Min at 12:00 AM on Sep 4
98
Max at 11:00 AM on Sep 4, 2026
05
30
Good
PM2.5: 6
AQI
30
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 6 µg/m3
PM₁₀ 8 µg/m3
SO₂ 4 µg/m3
NO₂ 14 µg/m3
O₃ 51 µg/m3
CO 171 µg/m3
AQI Hourly Forecast Graph
18
Min at 12:00 AM on Sep 5
36
Max at 3:00 PM on Sep 5, 2026
06
10
Good
PM2.5: 2
AQI
10
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 2 µg/m3
PM₁₀ 3 µg/m3
SO₂ 2 µg/m3
NO₂ 7 µg/m3
O₃ 40 µg/m3
CO 156 µg/m3
AQI Hourly Forecast Graph
8
Min at 3:00 PM on Sep 6
16
Max at 1:00 AM on Sep 6, 2026
07
25
Good
PM2.5: 5
AQI
25
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 5 µg/m3
PM₁₀ 6 µg/m3
SO₂ 5 µg/m3
NO₂ 18 µg/m3
O₃ 30 µg/m3
CO 212 µg/m3
AQI Hourly Forecast Graph
13
Min at 1:00 AM on Sep 7
34
Max at 1:00 PM on Sep 7, 2026
08
20
Good
PM2.5: 4
AQI
20
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 4 µg/m3
PM₁₀ 6 µg/m3
SO₂ 2 µg/m3
NO₂ 6 µg/m3
O₃ 34 µg/m3
CO 190 µg/m3
AQI Hourly Forecast Graph
17
Min at 2:00 PM on Sep 8
27
Max at 6:00 AM on Sep 8, 2026
09
30
Good
PM2.5: 6
AQI
30
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 6 µg/m3
PM₁₀ 8 µg/m3
SO₂ 3 µg/m3
NO₂ 9 µg/m3
O₃ 41 µg/m3
CO 181 µg/m3
AQI Hourly Forecast Graph
19
Min at 8:00 PM on Sep 9
48
Max at 1:00 PM on Sep 9, 2026
10
35
Good
PM2.5: 7
AQI
35
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 7 µg/m3
PM₁₀ 9 µg/m3
SO₂ 5 µg/m3
NO₂ 24 µg/m3
O₃ 32 µg/m3
CO 282 µg/m3
AQI Hourly Forecast Graph
23
Min at 1:00 AM on Sep 10
45
Max at 6:00 PM on Sep 10, 2026
11
40
Good
PM2.5: 8
AQI
40
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 8 µg/m3
PM₁₀ 9 µg/m3
SO₂ 5 µg/m3
NO₂ 29 µg/m3
O₃ 21 µg/m3
CO 279 µg/m3
AQI Hourly Forecast Graph
31
Min at 3:00 AM on Sep 11
61
Max at 12:00 AM on Sep 11, 2026
12
64
Moderate
PM2.5: 14
AQI
64
Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.
PM₂.₅ 14 µg/m3
PM₁₀ 16 µg/m3
SO₂ 6 µg/m3
NO₂ 22 µg/m3
O₃ 35 µg/m3
CO 271 µg/m3
AQI Hourly Forecast Graph
50
Min at 1:00 PM on Sep 12
74
Max at 6:00 AM on Sep 12, 2026
13
67
Moderate
PM2.5: 15
AQI
67
Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.
PM₂.₅ 15 µg/m3
PM₁₀ 17 µg/m3
SO₂ 4 µg/m3
NO₂ 10 µg/m3
O₃ 55 µg/m3
CO 223 µg/m3
AQI Hourly Forecast Graph
46
Min at 12:00 AM on Sep 13
83
Max at 10:00 AM on Sep 13, 2026
14
20
Good
PM2.5: 4
AQI
20
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 4 µg/m3
PM₁₀ 5 µg/m3
SO₂ 2 µg/m3
NO₂ 5 µg/m3
O₃ 40 µg/m3
CO 110 µg/m3
AQI Hourly Forecast Graph
5
Min at 8:00 PM on Sep 14
47
Max at 3:00 AM on Sep 14, 2026
15
15
Good
PM2.5: 3
AQI
15
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 3 µg/m3
PM₁₀ 3 µg/m3
SO₂ 4 µg/m3
NO₂ 16 µg/m3
O₃ 25 µg/m3
CO 140 µg/m3
AQI Hourly Forecast Graph
6
Min at 1:00 AM on Sep 15
23
Max at 12:00 AM on Sep 15, 2026
16
25
Good
PM2.5: 5
AQI
25
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 5 µg/m3
PM₁₀ 6 µg/m3
SO₂ 4 µg/m3
NO₂ 20 µg/m3
O₃ 33 µg/m3
CO 191 µg/m3
AQI Hourly Forecast Graph
18
Min at 6:00 PM on Sep 16
40
Max at 7:00 AM on Sep 16, 2026
17
50
Good
PM2.5: 10
AQI
50
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 10 µg/m3
PM₁₀ 12 µg/m3
SO₂ 5 µg/m3
NO₂ 13 µg/m3
O₃ 70 µg/m3
CO 177 µg/m3
AQI Hourly Forecast Graph
24
Min at 1:00 AM on Sep 17
61
Max at 1:00 PM on Sep 17, 2026
18
25
Good
PM2.5: 5
AQI
25
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 5 µg/m3
PM₁₀ 8 µg/m3
SO₂ 4 µg/m3
NO₂ 11 µg/m3
O₃ 65 µg/m3
CO 151 µg/m3
AQI Hourly Forecast Graph
20
Min at 9:00 PM on Sep 18
36
Max at 3:00 AM on Sep 18, 2026
19
20
Good
PM2.5: 4
AQI
20
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 4 µg/m3
PM₁₀ 5 µg/m3
SO₂ 4 µg/m3
NO₂ 13 µg/m3
O₃ 45 µg/m3
CO 152 µg/m3
AQI Hourly Forecast Graph
13
Min at 5:00 AM on Sep 19
21
Max at 3:00 PM on Sep 19, 2026
20
15
Good
PM2.5: 3
AQI
15
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 3 µg/m3
PM₁₀ 3 µg/m3
SO₂ 2 µg/m3
NO₂ 9 µg/m3
O₃ 39 µg/m3
CO 141 µg/m3
AQI Hourly Forecast Graph
8
Min at 2:00 PM on Sep 20
21
Max at 1:00 AM on Sep 20, 2026
21
15
Good
PM2.5: 3
AQI
15
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 3 µg/m3
PM₁₀ 3 µg/m3
SO₂ 2 µg/m3
NO₂ 8 µg/m3
O₃ 23 µg/m3
CO 131 µg/m3
AQI Hourly Forecast Graph
8
Min at 10:00 AM on Sep 21
20
Max at 2:00 AM on Sep 21, 2026
22
61
Moderate
PM2.5: 13
AQI
61
Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.
PM₂.₅ 13 µg/m3
PM₁₀ 17 µg/m3
SO₂ 9 µg/m3
NO₂ 22 µg/m3
O₃ 54 µg/m3
CO 200 µg/m3
AQI Hourly Forecast Graph
21
Min at 1:00 AM on Sep 22
73
Max at 6:00 PM on Sep 22, 2026
23
61
Moderate
PM2.5: 13
AQI
61
Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.
PM₂.₅ 13 µg/m3
PM₁₀ 15 µg/m3
SO₂ 6 µg/m3
NO₂ 24 µg/m3
O₃ 40 µg/m3
CO 205 µg/m3
AQI Hourly Forecast Graph
52
Min at 9:00 AM on Sep 23
69
Max at 1:00 AM on Sep 23, 2026
24
109
Poor
PM2.5: 29
AQI
109
Air Quality is Poor Air may cause discomfort. Sensitive groups should reduce outdoor exposure.
PM₂.₅ 29 µg/m3
PM₁₀ 31 µg/m3
SO₂ 9 µg/m3
NO₂ 16 µg/m3
O₃ 113 µg/m3
CO 241 µg/m3
AQI Hourly Forecast Graph
67
Min at 1:00 AM on Sep 24
124
Max at 4:00 PM on Sep 24, 2026
25
90
Moderate
PM2.5: 22
AQI
90
Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.
PM₂.₅ 22 µg/m3
PM₁₀ 24 µg/m3
SO₂ 7 µg/m3
NO₂ 15 µg/m3
O₃ 92 µg/m3
CO 228 µg/m3
AQI Hourly Forecast Graph
61
Min at 10:00 AM on Sep 25
120
Max at 2:00 AM on Sep 25, 2026
26
54
Moderate
PM2.5: 11
AQI
54
Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.
PM₂.₅ 11 µg/m3
PM₁₀ 12 µg/m3
SO₂ 4 µg/m3
NO₂ 15 µg/m3
O₃ 53 µg/m3
CO 192 µg/m3
AQI Hourly Forecast Graph
36
Min at 8:00 PM on Sep 26
89
Max at 1:00 AM on Sep 26, 2026
27
45
Good
PM2.5: 9
AQI
45
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 9 µg/m3
PM₁₀ 10 µg/m3
SO₂ 5 µg/m3
NO₂ 16 µg/m3
O₃ 50 µg/m3
CO 176 µg/m3
AQI Hourly Forecast Graph
24
Min at 12:00 AM on Sep 27
56
Max at 1:00 PM on Sep 27, 2026
28
20
Good
PM2.5: 4
AQI
20
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 4 µg/m3
PM₁₀ 4 µg/m3
SO₂ 2 µg/m3
NO₂ 12 µg/m3
O₃ 19 µg/m3
CO 149 µg/m3
AQI Hourly Forecast Graph
13
Min at 7:00 AM on Sep 28
27
Max at 12:00 AM on Sep 28, 2026
29
45
Good
PM2.5: 9
AQI
45
Air Quality is Good Air quality is excellent. No health concerns for any group.
PM₂.₅ 9 µg/m3
PM₁₀ 10 µg/m3
SO₂ 7 µg/m3
NO₂ 32 µg/m3
O₃ 31 µg/m3
CO 251 µg/m3
AQI Hourly Forecast Graph
29
Min at 1:00 AM on Sep 29
55
Max at 6:00 PM on Sep 29, 2026
30
54
Moderate
PM2.5: 11
AQI
54
Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.
PM₂.₅ 11 µg/m3
PM₁₀ 13 µg/m3
SO₂ 6 µg/m3
NO₂ 25 µg/m3
O₃ 39 µg/m3
CO 215 µg/m3
AQI Hourly Forecast Graph
47
Min at 8:00 AM on Sep 30
60
Max at 3:00 PM on Sep 30, 2026
01
109
Poor
PM2.5: 29
AQI
109
Air Quality is Poor Air may cause discomfort. Sensitive groups should reduce outdoor exposure.
PM₂.₅ 29 µg/m3
PM₁₀ 32 µg/m3
SO₂ 7 µg/m3
NO₂ 13 µg/m3
O₃ 106 µg/m3
CO 216 µg/m3
AQI Hourly Forecast Graph
62
Min at 1:00 AM on Oct 1
126
Max at 12:00 AM on Oct 1, 2026
02
80
Moderate
PM2.5: 19
AQI
80
Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.
PM₂.₅ 19 µg/m3
PM₁₀ 22 µg/m3
SO₂ 10 µg/m3
NO₂ 24 µg/m3
O₃ 53 µg/m3
CO 222 µg/m3
AQI Hourly Forecast Graph
62
Min at 8:00 PM on Oct 2
126
Max at 1:00 AM on Oct 2, 2026
03
58
Moderate
PM2.5: 12
AQI
58
Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.
PM₂.₅ 12 µg/m3
PM₁₀ 17 µg/m3
SO₂ 8 µg/m3
NO₂ 16 µg/m3
O₃ 59 µg/m3
CO 190 µg/m3
AQI Hourly Forecast Graph
46
Min at 10:00 AM on Oct 3
64
Max at 2:00 AM on Oct 3, 2026

Japan Prefecture Historical Weather Data

Display historical weather data by selecting a specific date and location Japan Prefecture.

Display historical weather data by selecting a specific date and location Japan Prefecture.

JapanOct 20, 2026
weather image
15 °C | °F
Light drizzle
Max 21 °
Min 11 °
Humidity 93 %
Wind 34 Km/h
Visibility 7 km
UV Index 0.4
Sunrise 5:55 AM
Sunset 5:00 PM
Moon Phase 77
Precipitation 7.98 mm
Snow 0 mm/h
Rain Chance 100%
Historical Weather from WeatherAPI

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