Air Quality in Kosai, Japan

Drizzle
28.8°C · 76.9% humidity
28.8°
Feels 34.9°
63
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
14 stations

Nearby Monitoring Stations

AQI Forecast
34 6am
34
34
63 9am
55
49
45 12pm
62
59
58 3pm
57
56
55 6pm
55
55
55 9pm
54
54
54 12am
34
34
34 3am
34
34
AD 728×90

Air Quality Index Trend

47h · 13 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. Current PM2.5 concentration in Kosai is 1.2× the WHO 24-hour guideline of 15 µg/m³.

76.9%
Humidity
68.7 km/h
Wind ESE
1000.4 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
63
17.61 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Kosai?

Temperature & Precipitation

PM2.5 Trend

47h · 13 stations
PM2.517.61 µg/m³ ×1.2 WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (14 stations within 25 km)
17.61
Median
17.61
Average
13.1
Low
24.0
High
PM2.5 µg/m³ · Model: 10.85 · Bias: -6.8

What is the 7-day forecast for Kosai?

07-22
30.0° 24.3°
3.13 mm
07-23
28.3° 21.5°
1.06 mm
07-24
28.2° 27.2°
0.06 mm
07-25
30.2° 24.3°
0.88 mm
07-26
33.6° 23.2°
0.38 mm
07-27
30.0° 24.9°
1.63 mm
07-28
30.3° 26.3°
Both models agree Avg diff: 2.1°C

Where are air quality stations near Kosai?

59
Oiwacho, Toyohashi, Aichi, Japan (二川豊橋市)
7.0 km PM2.5: 15.9 µg/m³
72
Mikkabicho Mikkabi, Shizuoka, Japan (三ヶ日浜松市北区)
11.8 km PM2.5: 22.1 µg/m³
80
Azumacho, Toyohashi, Aichi, Japan (吾妻豊橋市)
12.1 km PM2.5: 25.9 µg/m³
42
Kamigayachō, Shizuoka-ken, Japan (西部測定局浜松市西区)
13.8 km PM2.5: 10.1 µg/m³
63
Kamoe, Shizuoka, Japan (浜松中央測定局浜松市中区)
17.6 km PM2.5: 17.8 µg/m³
61
Kamoe, Shizuoka, Japan (浜松中央測定局浜松市中区)
17.6 km PM2.5: 16.9 µg/m³
42
Hamamatsu (浜松)
18.6 km PM2.5: 10.1 µg/m³
80
Hamamatsu (浜松)
18.6 km PM2.5: 25.9 µg/m³
72
Aioicho, Shizuoka, Japan (Ｒ−１５０浜松市中区)
20.7 km PM2.5: 22.1 µg/m³
55
Aioicho, Shizuoka, Japan (Ｒ−１５０浜松市中区)
20.7 km PM2.5: 14.0 µg/m³

What cities are near Kosai?

62 Arai 74 Toyohashi 68 Toyokawa 72 Kozakai-chō 60 Hamamatsu 68 Shinshiro 63 Tahara 69 Hamakita 50 Iwata 64 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 2026-07-22T00:21 UTC.