Air Quality in Chikuma, Japan

Rain
22.7°C · 86.3% humidity
22.7°
Feels 22.7°
75
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast
27 6am
27
27
75 9am
59
50
43 12pm
38
34
31 3pm
30
28
29 6pm
29
28
35 9pm
55
54
54 12am
54
54
34 3am
34
34
AD 728×90

Air Quality Index Trend

43h · 3 stn

Chikuma'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 Chikuma is 1.6× the WHO 24-hour guideline of 15 µg/m³.

86.3%
Humidity
5.2 km/h
Wind SSE
1002.7 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
75
23.5 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Chikuma?

Temperature & Precipitation

PM2.5 Trend

43h · 3 stations
PM2.523.5 µg/m³ ×1.6 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX5.9
High
AD 300×250
Station readings (1 station within 25 km)
23.5
Median
23.5
Average
23.5
Low
23.5
High
PM2.5 µg/m³ · Model: 7.35 · Bias: -16.1

What is the 7-day forecast for Chikuma?

07-22
31.6° 20.4°
8.87 mm
07-23
27.4° 15.4°
2.5 mm
07-24
26.4° 20.9°
3.25 mm
07-25
29.3° 18.5°
10.44 mm
07-26
30.2° 19.6°
0.75 mm
07-27
30.6° 18.4°
4.12 mm
07-28
25.0° 19.4°
6.19 mm
Both models agree Avg diff: 2.0°C

Where are air quality stations near Chikuma?

6
Shinonoifusetakada, Nagano, Nagano Prefecture, Japan (篠ノ井長野市)
7.2 km PM2.5: 1.4 µg/m³
50
Shinonoifusetakada, Nagano, Nagano Prefecture, Japan (篠ノ井長野市)
7.2 km PM2.5: 12.0 µg/m³
93
Amori, Nagano, Nagano, Japan (環境保全研究所長野市)
14.2 km PM2.5: 32.1 µg/m³
99
Nagano (長野)
16.4 km PM2.5: 34.9 µg/m³
76
Nagano (長野)
16.4 km PM2.5: 24.0 µg/m³
78
Hokujo, Nagano Prefecture, Japan (国設八方尾根酸性雨北安曇郡白馬村)
27.6 km PM2.5: 24.9 µg/m³
22
Hokujo, Nagano Prefecture, Japan (国設八方尾根酸性雨北安曇郡白馬村)
27.6 km PM2.5: 5.3 µg/m³

What cities are near Chikuma?

75 Sakaki 75 Nagano 15 Ōmachi 66 Ueda 69 Suzaka 63 Hotaka 63 Kamimaruko 63 Toyoshina 61 Tōmi 63 Azumino
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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.