Air Quality in Hirai, Japan

Cloudy
26.1°C · 70.3% humidity
26.1°
Feels 26.1°
21
Good
Air quality is satisfactory. Enjoy outdoor activities.
16 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
15 9am
19
15
21 12pm
25
28
30 3pm
11
32
13 6pm
14
34
34 9pm
35
35
35 12am
35
35
35 3am
35
35
35 6am
35
35
Station readings
19
CAMS model adj -19
34
34
34
54
54
54
54
34
54
34
34
54
54
54
54
54
54
54
54
54
54
54
54
54
AD 728×90

Air Quality Index Trend

19h · 2 stn

Hirai's air quality is influenced by industrial emissions, vehicle traffic, and regional pollution transport. Winter heating season and spring dust events typically create the most challenging air quality conditions.

70.3%
Humidity
31.9 km/h
Wind E
1009.4 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
21
4.96 µg/m³
PM10▲
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Hirai?

Temperature & Precipitation

PM2.5 Trend

19h · 2 stations
PM2.54.96 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (16 stations within 25 km)
4.96
Median
5.26
Average
2.6
Low
8.4
High
PM2.5 µg/m³ · Model: 8.2 · Bias: +3.2

What is the 7-day forecast for Hirai?

08-03
29.2° 22.1°
11.81 mm
08-04
33.3° 25.9°
6.81 mm
08-05
31.8° 25.8°
2.75 mm
08-06
29.9° 27.2°
12.25 mm
08-07
34.4° 25.5°
9.13 mm
08-08
33.7° 26.6°
45.5 mm
08-09
35.1° 23.7°
0.13 mm
Both models agree Avg diff: 2.6°C

Where are air quality stations near Hirai?

34
Edogawa (江戸川区)
2.3 km PM2.5: 8.2 µg/m³
50
スカイツリー１５０ｍ
2.9 km 86.5% RH PM2.5: 12.0 µg/m³ PM10: 12.0 µg/m³
8
スカイツリー３２５ｍ
2.9 km 81.2% RH PM2.5: 2.0 µg/m³ PM10: 8.0 µg/m³
25
Katsushika (葛飾)
4.0 km PM2.5: 6.0 µg/m³
21
Katsushika (葛飾)
4.0 km PM2.5: 5.0 µg/m³
25
Koto (江東区)
4.5 km PM2.5: 6.0 µg/m³
37
Haruecho, Edogawa, Tokyo, Japan (江戸川区春江町江戸川区)
4.8 km PM2.5: 8.9 µg/m³
48
Kamakura, Katsushika, Tokyo, Japan (葛飾区鎌倉葛飾区)
5.1 km PM2.5: 11.5 µg/m³
21
Minamisenju, Arakawa, Tokyo, Japan (荒川区南千住荒川区)
5.2 km PM2.5: 5.0 µg/m³
32
Minamikasai, Edogawa, Tokyo, Japan (江戸川区南葛西江戸川区)
7.0 km PM2.5: 7.7 µg/m³

What cities are near Hirai?

20 Ōjima 23 Katsushika 18 Edogawe 23 Sumida 17 Funabori 17 Ichinoe 23 Asakusa 24 Horikiri 25 Aoto 20 Tōyō
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T03:01 UTC.