Air Quality in Koga, Japan

Cloudy
22.1°C · 75.9% humidity
22.1°
Feels 22.1°
59
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
15 stations

Nearby Monitoring Stations

AQI Forecast
83 4am
84
84
59 7am
37
42
45 10am
48
49
51 1pm
52
52
53 4pm
53
53
54 7pm
54
66
83 10pm
83
83
83 1am
83
83
AD 728×90

Air Quality Index Trend

47h · 28 stn

Koga'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 Koga is 1.1× the WHO 24-hour guideline of 15 µg/m³.

75.9%
Humidity
11.8 km/h
Wind SSE
1010.6 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
59
16.0 µg/m³
PM10
38
41.15 µg/m³
050100150200300500

What is the weather forecast for Koga?

Temperature & Precipitation

PM2.5 Trend

47h · 28 stations
PM2.516.0 µg/m³ ×1.1 WHO
Moderate
PM1041.15 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (15 stations within 25 km)
16.0
Median
8.64
Average
3.1
Low
18.3
High
PM2.5 µg/m³ · Model: 20.3 · Bias: +4.3

What is the 7-day forecast for Koga?

05-29
21.3° 19.4°
0.94 mm
05-30
22.1° 20.6°
0.19 mm
05-31
23.4° 20.4°
0.19 mm
06-01
25.8° 19.3°
1.13 mm
06-02
24.3° 21.0°
06-03
22.2° 17.4°
38.31 mm
06-04
23.1° 19.0°
47.38 mm
Both models agree Avg diff: 2.3°C

Where are air quality stations near Koga?

50
Koga, Fukuoka Prefecture, Japan (古賀古賀市)
1.9 km PM2.5: 12.0 µg/m³
21
Kasumigaoka, Fukuoka, Japan (香椎福岡市東区)
7.3 km PM2.5: 5.0 µg/m³
21
Kasumigaoka, Fukuoka, Japan (香椎福岡市東区)
7.3 km PM2.5: 5.0 µg/m³
59
Togo, Munakata, Fukuoka, Japan (宗像宗像市)
10.5 km PM2.5: 15.9 µg/m³
25
Togo, Munakata, Fukuoka, Japan (宗像宗像市)
10.5 km PM2.5: 6.0 µg/m³
25
Tanaka, Fukuoka-ken, Japan (篠栗糟屋郡篠栗町)
13.1 km PM2.5: 6.0 µg/m³
37
Tanaka, Fukuoka-ken, Japan (篠栗糟屋郡篠栗町)
13.1 km PM2.5: 8.9 µg/m³
25
Yoshizuka, Fukuoka, Japan (吉塚福岡市博多区)
14.5 km PM2.5: 6.0 µg/m³
25
Yoshizuka, Fukuoka, Japan (吉塚福岡市博多区)
14.5 km PM2.5: 6.0 µg/m³
21
Fukuoka (福岡)
17.0 km PM2.5: 5.0 µg/m³

What cities are near Koga?

42 Nishifukuma 53 Shingū 29 Fukutsu 18 Munakata 39 Wakasugi 38 Sasaguri 40 Fukuoka 36 Sue 38 Miyawaka 36 Shime
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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 2026-05-29T22:26 UTC.