Air Quality in Kofu City

Active Alerts (Kofu City)

Photochemical Smog:No Alerts in Effect
Fine Particulate Matter
(PM2.5)		:No Alerts in Effect
Access Yamanashi Prefecture website linked above for more information.
Kofu City Map Kofu City Map
Kofu City Hall West Building
Kofu City Hall
Kofu City Local Wholesale Market
Yamanashi Prefecture Map
Tap the pin for air quality data.

Archived Data

Note

This information is preliminary and subject to revision.
The data may have a negative value because it is a very small amount.
Prefectual air quality information is available via email newsletter issued by Yamanashi Prefecture.
(Photochemical smog, Fine Particulate Matter(PM2.5))

Links

Kofu City
Copyright © Kofu City. All rights reserved.

Kofu City Hall West Building
(Kofu Anakiri Station)

2-8-19 Takara, Kofu City
Photochemical Oxidants

Photochemical Oxidants (Ox)

A type of pollutant produced by chemical reactions that occur between nitrogen oxide and organic compounds in the atmosphere due to the effect of UV rays from the sun. Not only does it cause photochemical smog, but it may also irritate mucosa at high concentrations and have negative effects on respiratory organs as well as on plants, including agricultural products.

Measuring unit: ppm

Photochemical Smog Advisory

Yamanashi prefecture announces photochemical smog alert when the level of photochemical oxidant exceeds 0.12ppm and such level is forecast to continue. There are four levels to the alerts declared by the prefecture according to the concentration level of the photochemical oxidant: 1. forecast, 2. advisory, 3. warning, and 4. emergency warning.

0.020
ppm
Fine Particulate Matter (PM2.5)

Fine Particulate Matter (PM2.5)

PM2.5 is the fine particles in the atmosphere with the size of 2.5 micrometers or smaller in diameter, and it is defined as the particle which passes through a size-selective inlet with a 50 % efficiency cut-off at 2.5 μm aerodynamic diameter.

Measuring unit: μg/m3

PM2.5 Health Warning

Yamanashi Prefecture announces PM2.5 Health Warning when the daily average of PM2.5 is forecast to exceed 70μg/m3.
10
μg/m3

Kofu City Hall
(Kofu City Motor Vehicle Emission Station)

1-18-1 Marunouchi, Kofu City
Fine Particulate Matter (PM2.5)

Fine Particulate Matter (PM2.5)

PM2.5 is the fine particles in the atmosphere with the size of 2.5 micrometers or smaller in diameter, and it is defined as the particle which passes through a size-selective inlet with a 50 % efficiency cut-off at 2.5 μm aerodynamic diameter.

Measuring unit: μg/m3

PM2.5 Health Warning

Yamanashi Prefecture announces PM2.5 Health Warning when the daily average of PM2.5 is forecast to exceed 70μg/m3.
4
μg/m3

Kofu City Local Wholesale Market
(Kokubo Motor Vehicle Emission Station)

6-5-1 Kokubo, Kofu City
Fine Particulate Matter (PM2.5)

Fine Particulate Matter (PM2.5)

PM2.5 is the fine particles in the atmosphere with the size of 2.5 micrometers or smaller in diameter, and it is defined as the particle which passes through a size-selective inlet with a 50 % efficiency cut-off at 2.5 μm aerodynamic diameter.

Measuring unit: μg/m3

PM2.5 Health Warning

Yamanashi Prefecture announces PM2.5 Health Warning when the daily average of PM2.5 is forecast to exceed 70μg/m3.
9
μg/m3