Air Quality in Tōmi, Japan

Rain
18.4°C · 96.8% humidity
18.4°
Feels 18.4°
61
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations

Nearby Monitoring Stations

AQI Forecast
34 6am
27
27
61 9am
49
42
38 12pm
34
31
30 3pm
28
27
29 6pm
28
35
55 9pm
54
54
54 12am
54
54
54 3am
54
54
AD 728×90

Air Quality Index Trend

46h · 3 stn

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

96.8%
Humidity
20.5 km/h
Wind ESE
1004.3 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
61
16.95 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Tōmi?

Temperature & Precipitation

PM2.5 Trend

46h · 3 stations
PM2.516.95 µg/m³ ×1.1 WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX9.4
Very High
AD 300×250
Station readings (2 stations within 25 km)
16.95
Median
16.85
Average
15.9
Low
17.8
High
PM2.5 µg/m³ · Model: 10.0 · Bias: -6.9

What is the 7-day forecast for Tōmi?

07-22
23.9° 16.0°
7.38 mm
07-23
21.1° 13.9°
2.06 mm
07-24
20.8° 16.9°
3.31 mm
07-25
24.2° 15.4°
8.38 mm
07-26
25.5° 16.0°
0.75 mm
07-27
22.2° 17.4°
3.69 mm
07-28
24.1° 18.4°
2.69 mm
Both models agree Avg diff: 3.2°C

Where are air quality stations near Tōmi?

61
Atobe, Saku, Nagano, Japan (佐久佐久市)
16.7 km PM2.5: 16.9 µg/m³
30
倉敷市/庄, Japan (庄倉敷市)
19.4 km PM2.5: 7.2 µg/m³
23
Ozasa, Gunma, Japan (嬬恋村運動公園吾妻郡嬬恋村)
21.6 km PM2.5: 5.5 µg/m³
82
Ozasa, Gunma, Japan (嬬恋村運動公園吾妻郡嬬恋村)
21.6 km PM2.5: 26.8 µg/m³
13
Ozasa, Gunma, Japan (嬬恋村運動公園吾妻郡嬬恋村)
21.6 km PM2.5: 3.1 µg/m³
6
Shinonoifusetakada, Nagano, Nagano Prefecture, Japan (篠ノ井長野市)
31.5 km PM2.5: 1.4 µg/m³
50
Shinonoifusetakada, Nagano, Nagano Prefecture, Japan (篠ノ井長野市)
31.5 km PM2.5: 12.0 µg/m³

What cities are near Tōmi?

61 Komoro 66 Ueda 63 Kamimaruko 59 Miyota 63 Saku 75 Sakaki 59 Karuizawa 75 Chikuma 69 Suzaka 75 Nagano
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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.