Air Quality in Muroran, Japan
Drizzle
17.0°C · 96.8% humidity
17.0°
Feels 17.0°
70
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station
Nearby Monitoring Stations
Muroran's air quality — share it
AQI Forecast
27
4pm
27
27
70
7pm
58
56
70
10pm
65
62
60
1am
58
57
56
4am
56
55
55
7am
55
54
54
10am
54
54
54
1pm
54
54
Air Quality Index Trend
30h · 1 stnMuroran'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 Muroran is 1.4× the WHO 24-hour guideline of 15 µg/m³.
96.8%
Humidity
37.7 km/h
Wind E
1014.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
21.1 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Muroran?
Temperature & Precipitation
PM2.5 Trend
30h · 1 stationPM2.521.1 µg/m³
×1.4 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
21.1
Median
21.1
Average
21.1
Low
21.1
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -14.9
What is the 7-day forecast for Muroran?
09-05
19.9° 15.4°
6.62 mm
09-06
22.4° 15.1°
0.25 mm
09-07
19.8° 12.7°
0.81 mm
09-08
22.4° 11.3°
7.69 mm
09-09
20.9° 17.1°
6.94 mm
09-10
20.2° 14.4°
1.44 mm
09-11
20.2° 14.0°
13.75 mm
Both models agree
Avg diff: 3.0°C
Where are air quality stations near Muroran?
55
Muroran, Hokkaido Prefecture, Japan (御前水地区測定局室蘭市)
70
Muroran, Hokkaido Prefecture, Japan (御前水地区測定局室蘭市)
What cities are near Muroran?
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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 2026-09-05T10:26 UTC.