Air Quality in Kosai, Japan

Rain
23.7°C · 57.3% humidity
23.7°
Feels 23.7°
16
Good
Air quality is satisfactory. Enjoy outdoor activities.
15 stations

Nearby Monitoring Stations

AQI Forecast
27 3am
27
27
16 6am
19
21
23 9am
24
32
53 12pm
65
65
65 3pm
66
66
54 6pm
54
34
34 9pm
27
27
27 12am
27
27
AD 728×90

Air Quality Index Trend

47h · 20 stn

Kosai'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.

57.3%
Humidity
98.9 km/h
Wind SE
1002.9 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
16
3.87 µg/m³
PM10▲
25
27.45 µg/m³
050100150200300500

What is the weather forecast for Kosai?

Temperature & Precipitation

PM2.5 Trend

47h · 20 stations
PM2.53.87 µg/m³ ✓ WHO
Good
PM1027.45 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (15 stations within 25 km)
3.87
Median
5.12
Average
1.0
Low
22.1
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +6.1

What is the 7-day forecast for Kosai?

05-28
23.4° 16.3°
19.69 mm
05-29
23.7° 19.0°
17.63 mm
05-30
22.9° 19.1°
1.63 mm
05-31
24.4° 19.6°
0.06 mm
06-01
24.6° 20.3°
06-02
23.4° 21.3°
06-03
26.1° 21.4°
11.5 mm
Both models agree Avg diff: 2.2°C

Where are air quality stations near Kosai?

17
Oiwacho, Toyohashi, Aichi, Japan (二川豊橋市)
7.0 km PM2.5: 4.1 µg/m³
30
Mikkabicho Mikkabi, Shizuoka, Japan (三ヶ日浜松市北区)
11.8 km PM2.5: 7.2 µg/m³
30
Azumacho, Toyohashi, Aichi, Japan (吾妻豊橋市)
12.1 km PM2.5: 7.2 µg/m³
50
Kamigayachō, Shizuoka-ken, Japan (西部測定局浜松市西区)
13.8 km PM2.5: 12.0 µg/m³
35
Kamoe, Shizuoka, Japan (浜松中央測定局浜松市中区)
17.6 km PM2.5: 8.4 µg/m³
38
Kamoe, Shizuoka, Japan (浜松中央測定局浜松市中区)
17.6 km PM2.5: 9.1 µg/m³
34
Hamamatsu (浜松)
18.6 km PM2.5: 8.2 µg/m³
42
Hamamatsu (浜松)
18.6 km PM2.5: 10.1 µg/m³
50
Aioicho, Shizuoka, Japan (Ｒ−１５０浜松市中区)
20.7 km PM2.5: 12.0 µg/m³
34
Aioicho, Shizuoka, Japan (Ｒ−１５０浜松市中区)
20.7 km PM2.5: 8.2 µg/m³

What cities are near Kosai?

19 Arai 22 Toyohashi 22 Toyokawa 16 Kozakai-chō 20 Hamamatsu 17 Shinshiro 16 Tahara 18 Hamakita 16 Iwata 19 Gamagōri
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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 2026-05-28T21:35 UTC.