Air Quality Niigata Prefecture Free 2026

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Last updated on October 1st, 2026 at 09:46 am

Air Quality Niigata Prefecture

Niigata Prefecture AQI – Detailed Air Quality

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

Today’s Air Quality Index (AQI)

Real-time PM2.5, PM10 air pollution level in Niigata City, Niigata Capital

3:16 PM, October 11, 2026

Last updated on: 3:16 PM

Live AQI 76

Air Quality is Moderate

PM₂.₅: 17.67µg/m³ PM₁₀: 19.7µg/m³

Moderate The air quality is generally acceptable for most people. However, sensitive groups may experience minor to moderate symptoms from long-term exposure.

Air Quality Hourly Forecast

Min at 3:00 PM on Oct 11

Max at 11:00 AM on Oct 12, 2026

Niigata Prefecture Historical Air Quality Data

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

August

October

Niigata City, Niigata Capital Historical Air Quality Data

Explore historical AQI data and pollutant changes over time.

Oct 11, 2026 3:16 PM

SUNMONTUEWEDTHUFRISAT

Good

PM2.5: 10

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 10 µg/m3

PM₁₀ 11 µg/m3

SO₂ 7 µg/m3

NO₂ 4 µg/m3

O₃ 19 µg/m3

CO 123 µg/m3

AQI Hourly Forecast Graph

Min at 2:00 PM on Aug 30

Max at 12:00 AM on Aug 30, 2026

Moderate

PM2.5: 14

AQI

Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.

PM₂.₅ 14 µg/m3

PM₁₀ 14 µg/m3

SO₂ 6 µg/m3

NO₂ 4 µg/m3

O₃ 36 µg/m3

CO 137 µg/m3

AQI Hourly Forecast Graph

Min at 7:00 PM on Aug 31

Max at 4:00 AM on Aug 31, 2026

Moderate

PM2.5: 17

AQI

Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.

PM₂.₅ 17 µg/m3

PM₁₀ 18 µg/m3

SO₂ 6 µg/m3

NO₂ 4 µg/m3

O₃ 36 µg/m3

CO 145 µg/m3

AQI Hourly Forecast Graph

Min at 1:00 AM on Sep 1

Max at 4:00 AM on Sep 1, 2026

Moderate

PM2.5: 13

AQI

Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.

PM₂.₅ 13 µg/m3

PM₁₀ 14 µg/m3

SO₂ 6 µg/m3

NO₂ 3 µg/m3

O₃ 48 µg/m3

CO 127 µg/m3

AQI Hourly Forecast Graph

Min at 7:00 AM on Sep 2

Max at 1:00 AM on Sep 2, 2026

Good

PM2.5: 10

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 10 µg/m3

PM₁₀ 10 µg/m3

SO₂ 4 µg/m3

NO₂ 4 µg/m3

O₃ 21 µg/m3

CO 134 µg/m3

AQI Hourly Forecast Graph

Min at 5:00 PM on Sep 3

Max at 1:00 AM on Sep 3, 2026

Good

PM2.5: 9

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 9 µg/m3

PM₁₀ 10 µg/m3

SO₂ 6 µg/m3

NO₂ 4 µg/m3

O₃ 31 µg/m3

CO 129 µg/m3

AQI Hourly Forecast Graph

Min at 6:00 AM on Sep 4

Max at 11:00 PM on Sep 4, 2026

Good

PM2.5: 7

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 7 µg/m3

PM₁₀ 8 µg/m3

SO₂ 6 µg/m3

NO₂ 3 µg/m3

O₃ 54 µg/m3

CO 145 µg/m3

AQI Hourly Forecast Graph

Min at 12:00 AM on Sep 5

Max at 1:00 AM on Sep 5, 2026

Good

PM2.5: 1

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 1 µg/m3

PM₁₀ 2 µg/m3

SO₂ 3 µg/m3

NO₂ 2 µg/m3

O₃ 59 µg/m3

CO 145 µg/m3

AQI Hourly Forecast Graph

Min at 6:00 AM on Sep 6

Max at 1:00 AM on Sep 6, 2026

Good

PM2.5: 7

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 7 µg/m3

PM₁₀ 7 µg/m3

SO₂ 6 µg/m3

NO₂ 4 µg/m3

O₃ 29 µg/m3

CO 144 µg/m3

AQI Hourly Forecast Graph

Min at 1:00 AM on Sep 7

Max at 12:00 AM on Sep 7, 2026

Good

PM2.5: 10

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 10 µg/m3

PM₁₀ 11 µg/m3

SO₂ 6 µg/m3

NO₂ 5 µg/m3

O₃ 20 µg/m3

CO 163 µg/m3

AQI Hourly Forecast Graph

Min at 11:00 PM on Sep 8

Max at 2:00 AM on Sep 8, 2026

Good

PM2.5: 3

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 3 µg/m3

PM₁₀ 4 µg/m3

SO₂ 5 µg/m3

NO₂ 3 µg/m3

O₃ 44 µg/m3

CO 201 µg/m3

AQI Hourly Forecast Graph

Min at 10:00 AM on Sep 9

Max at 1:00 AM on Sep 9, 2026

Good

PM2.5: 9

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 9 µg/m3

PM₁₀ 10 µg/m3

SO₂ 6 µg/m3

NO₂ 4 µg/m3

O₃ 30 µg/m3

CO 201 µg/m3

AQI Hourly Forecast Graph

Min at 1:00 AM on Sep 10

Max at 12:00 AM on Sep 10, 2026

Moderate

PM2.5: 16

AQI

Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.

PM₂.₅ 16 µg/m3

PM₁₀ 17 µg/m3

SO₂ 6 µg/m3

NO₂ 5 µg/m3

O₃ 26 µg/m3

CO 209 µg/m3

AQI Hourly Forecast Graph

Min at 1:00 AM on Sep 11

Max at 12:00 AM on Sep 11, 2026

Moderate

PM2.5: 15

AQI

Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.

PM₂.₅ 15 µg/m3

PM₁₀ 15 µg/m3

SO₂ 6 µg/m3

NO₂ 3 µg/m3

O₃ 33 µg/m3

CO 195 µg/m3

AQI Hourly Forecast Graph

Min at 8:00 PM on Sep 12

Max at 2:00 AM on Sep 12, 2026

Moderate

PM2.5: 13

AQI

Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.

PM₂.₅ 13 µg/m3

PM₁₀ 13 µg/m3

SO₂ 6 µg/m3

NO₂ 3 µg/m3

O₃ 32 µg/m3

CO 180 µg/m3

AQI Hourly Forecast Graph

Min at 6:00 PM on Sep 13

Max at 2:00 AM on Sep 13, 2026

Good

PM2.5: 6

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 6 µg/m3

PM₁₀ 7 µg/m3

SO₂ 5 µg/m3

NO₂ 3 µg/m3

O₃ 32 µg/m3

CO 123 µg/m3

AQI Hourly Forecast Graph

Min at 8:00 AM on Sep 14

Max at 1:00 AM on Sep 14, 2026

Good

PM2.5: 8

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 8 µg/m3

PM₁₀ 8 µg/m3

SO₂ 6 µg/m3

NO₂ 4 µg/m3

O₃ 29 µg/m3

CO 124 µg/m3

AQI Hourly Forecast Graph

Min at 12:00 AM on Sep 15

Max at 2:00 AM on Sep 15, 2026

Good

PM2.5: 7

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 7 µg/m3

PM₁₀ 7 µg/m3

SO₂ 6 µg/m3

NO₂ 4 µg/m3

O₃ 26 µg/m3

CO 136 µg/m3

AQI Hourly Forecast Graph

Min at 5:00 AM on Sep 16

Max at 12:00 AM on Sep 16, 2026

Good

PM2.5: 10

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 10 µg/m3

PM₁₀ 11 µg/m3

SO₂ 6 µg/m3

NO₂ 3 µg/m3

O₃ 44 µg/m3

CO 142 µg/m3

AQI Hourly Forecast Graph

Min at 3:00 AM on Sep 17

Max at 12:00 AM on Sep 17, 2026

Moderate

PM2.5: 11

AQI

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 6 µg/m3

NO₂ 3 µg/m3

O₃ 49 µg/m3

CO 124 µg/m3

AQI Hourly Forecast Graph

Min at 7:00 AM on Sep 18

Max at 12:00 AM on Sep 18, 2026

Good

PM2.5: 10

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 10 µg/m3

PM₁₀ 10 µg/m3

SO₂ 6 µg/m3

NO₂ 2 µg/m3

O₃ 38 µg/m3

CO 114 µg/m3

AQI Hourly Forecast Graph

Min at 8:00 AM on Sep 19

Max at 12:00 AM on Sep 19, 2026

Good

PM2.5: 6

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 6 µg/m3

PM₁₀ 7 µg/m3

SO₂ 5 µg/m3

NO₂ 2 µg/m3

O₃ 39 µg/m3

CO 113 µg/m3

AQI Hourly Forecast Graph

Min at 8:00 AM on Sep 20

Max at 1:00 AM on Sep 20, 2026

Good

PM2.5: 3

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 3 µg/m3

PM₁₀ 5 µg/m3

SO₂ 4 µg/m3

NO₂ 3 µg/m3

O₃ 42 µg/m3

CO 120 µg/m3

AQI Hourly Forecast Graph

Min at 12:00 PM on Sep 21

Max at 1:00 AM on Sep 21, 2026

Good

PM2.5: 9

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 9 µg/m3

PM₁₀ 16 µg/m3

SO₂ 4 µg/m3

NO₂ 3 µg/m3

O₃ 46 µg/m3

CO 127 µg/m3

AQI Hourly Forecast Graph

Min at 1:00 AM on Sep 22

Max at 12:00 AM on Sep 22, 2026

Moderate

PM2.5: 13

AQI

Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.

PM₂.₅ 13 µg/m3

PM₁₀ 16 µg/m3

SO₂ 7 µg/m3

NO₂ 4 µg/m3

O₃ 45 µg/m3

CO 145 µg/m3

AQI Hourly Forecast Graph

Min at 6:00 PM on Sep 23

Max at 2:00 AM on Sep 23, 2026

Good

PM2.5: 8

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 8 µg/m3

PM₁₀ 10 µg/m3

SO₂ 5 µg/m3

NO₂ 5 µg/m3

O₃ 41 µg/m3

CO 139 µg/m3

AQI Hourly Forecast Graph

Min at 11:00 AM on Sep 24

Max at 2:00 AM on Sep 24, 2026

Good

PM2.5: 7

AQI

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 4 µg/m3

O₃ 48 µg/m3

CO 135 µg/m3

AQI Hourly Forecast Graph

Min at 1:00 PM on Sep 25

Max at 1:00 AM on Sep 25, 2026

Moderate

PM2.5: 11

AQI

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 7 µg/m3

NO₂ 3 µg/m3

O₃ 35 µg/m3

CO 140 µg/m3

AQI Hourly Forecast Graph

Min at 1:00 AM on Sep 26

Max at 12:00 AM on Sep 26, 2026

Moderate

PM2.5: 14

AQI

Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.

PM₂.₅ 14 µg/m3

PM₁₀ 15 µg/m3

SO₂ 7 µg/m3

NO₂ 4 µg/m3

O₃ 33 µg/m3

CO 138 µg/m3

AQI Hourly Forecast Graph

Min at 12:00 PM on Sep 27

Max at 1:00 AM on Sep 27, 2026

Good

PM2.5: 7

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 7 µg/m3

PM₁₀ 7 µg/m3

SO₂ 4 µg/m3

NO₂ 5 µg/m3

O₃ 23 µg/m3

CO 157 µg/m3

AQI Hourly Forecast Graph

Min at 9:00 AM on Sep 28

Max at 1:00 AM on Sep 28, 2026

Good

PM2.5: 6

AQI

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 5 µg/m3

O₃ 28 µg/m3

CO 151 µg/m3

AQI Hourly Forecast Graph

Min at 6:00 AM on Sep 29

Max at 12:00 AM on Sep 29, 2026

Moderate

PM2.5: 17

AQI

Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.

PM₂.₅ 17 µg/m3

PM₁₀ 19 µg/m3

SO₂ 7 µg/m3

NO₂ 6 µg/m3

O₃ 38 µg/m3

CO 162 µg/m3

AQI Hourly Forecast Graph

Min at 1:00 AM on Sep 30

Max at 12:00 AM on Sep 30, 2026

Moderate

PM2.5: 12

AQI

Air Quality is Moderate Air is acceptable, but sensitive individuals should closely monitor their symptoms.

PM₂.₅ 12 µg/m3

PM₁₀ 15 µg/m3

SO₂ 5 µg/m3

NO₂ 4 µg/m3

O₃ 55 µg/m3

CO 147 µg/m3

AQI Hourly Forecast Graph

Min at 10:00 PM on Oct 1

Max at 2:00 AM on Oct 1, 2026

Good

PM2.5: 5

AQI

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 3 µg/m3

O₃ 59 µg/m3

CO 148 µg/m3

AQI Hourly Forecast Graph

Min at 1:00 PM on Oct 2

Max at 4:00 AM on Oct 2, 2026

Good

PM2.5: 6

AQI

Air Quality is Good Air quality is excellent. No health concerns for any group.

PM₂.₅ 6 µg/m3

PM₁₀ 10 µg/m3

SO₂ 7 µg/m3

NO₂ 3 µg/m3

O₃ 61 µg/m3

CO 146 µg/m3

AQI Hourly Forecast Graph

Min at 1:00 AM on Oct 3

Max at 12:00 AM on Oct 3, 2026

Niigata Prefecture Historical Weather Data

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

Niigata City, Niigata CapitalOct 10, 2026

19 °C | °F

Sunny

Max 23 °

Min 16 °

Humidity 68 %	Wind 40 Km/h
Visibility 10 km	UV Index 2.9
Sunrise 5:47 AM	Sunset 5:13 PM
Moonrise 4:58 AM	Moonset 4:40 PM
Snow 0 mm/h	Rain Chance 0%

Historical Weather from WeatherAPI

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