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Air quality · Central Java, Indonesia

Jepara Air Quality Index (AQI) today

Modelled estimate for 19:00 local time (UTC+7), refreshed 3 Nov, 07:52 UTC+0.

77 Moderate

Live estimate · modelled

US EPA AQI19:00 UTC+7, 3 Nov Main pollutant: O₃

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

This page uses EPA’s NowCast, which follows the last few hours, as the US government’s AirNow does. On a 24-hour average of particles, as many apps show, it is 92.

Over the next 24 hours the model expects the AQI to range from 74 around 20:00 to 150 around 17:00 (4 Nov).

322nd most polluted of 849 cities worldwide right now, 19th of 25 in Indonesia.

What to do today

  • Long walk or run outside OK, lighter if very sensitive
  • Kids playing outside OK
  • Airing the house Open
  • Mask outdoors Not needed

Based on the US EPA’s health statement: “Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.” General guidance, not medical advice.

Last 24 hours and next 48

Past hours Forecast

20:00 · 92 21:00 · 94 22:00 · 95 23:00 · 93 00:00 · 93 01:00 · 93 02:00 · 96 03:00 · 98 04:00 · 103 05:00 · 107 06:00 · 113 07:00 · 110 08:00 · 107 09:00 · 104 10:00 · 99 11:00 · 97 12:00 · 93 13:00 · 90 14:00 · 86 15:00 · 93 16:00 · 100 17:00 · 100 18:00 · 90 19:00 · 77 20:00 · 74 21:00 · 74 22:00 · 75 23:00 · 77 00:00 · 79 01:00 · 80 02:00 · 81 03:00 · 85 04:00 · 90 05:00 · 97 06:00 · 105 07:00 · 100 08:00 · 98 09:00 · 98 10:00 · 99 11:00 · 103 12:00 · 107 13:00 · 109 14:00 · 109 15:00 · 119 16:00 · 140 17:00 · 150 18:00 · 147 19:00 · 133 20:00 · 113 21:00 · 135 22:00 · 153 23:00 · 158 00:00 · 163 01:00 · 165 02:00 · 165 03:00 · 164 04:00 · 162 05:00 · 158 06:00 · 154 07:00 · 133 08:00 · 106 09:00 · 95 10:00 · 94 11:00 · 96 12:00 · 98 13:00 · 99 14:00 · 99 Now

US EPA AQI per hour, UTC+7. Particles use EPA’s NowCast (a 12-hour weighted average), ozone and CO an 8-hour average. Lighter bars are the CAMS forecast.

Show as a table
TimeAQI
Mon 20:0092
Mon 21:0094
Mon 22:0095
Mon 23:0093
Tue 00:0093
Tue 01:0093
Tue 02:0096
Tue 03:0098
Tue 04:00103
Tue 05:00107
Tue 06:00113
Tue 07:00110
Tue 08:00107
Tue 09:00104
Tue 10:0099
Tue 11:0097
Tue 12:0093
Tue 13:0090
Tue 14:0086
Tue 15:0093
Tue 16:00100
Tue 17:00100
Tue 18:0090
Tue 19:00 · Now77
Tue 20:00 · Forecast74
Tue 21:00 · Forecast74
Tue 22:00 · Forecast75
Tue 23:00 · Forecast77
Wed 00:00 · Forecast79
Wed 01:00 · Forecast80
Wed 02:00 · Forecast81
Wed 03:00 · Forecast85
Wed 04:00 · Forecast90
Wed 05:00 · Forecast97
Wed 06:00 · Forecast105
Wed 07:00 · Forecast100
Wed 08:00 · Forecast98
Wed 09:00 · Forecast98
Wed 10:00 · Forecast99
Wed 11:00 · Forecast103
Wed 12:00 · Forecast107
Wed 13:00 · Forecast109
Wed 14:00 · Forecast109
Wed 15:00 · Forecast119
Wed 16:00 · Forecast140
Wed 17:00 · Forecast150
Wed 18:00 · Forecast147
Wed 19:00 · Forecast133
Wed 20:00 · Forecast113
Wed 21:00 · Forecast135
Wed 22:00 · Forecast153
Wed 23:00 · Forecast158
Thu 00:00 · Forecast163
Thu 01:00 · Forecast165
Thu 02:00 · Forecast165
Thu 03:00 · Forecast164
Thu 04:00 · Forecast162
Thu 05:00 · Forecast158
Thu 06:00 · Forecast154
Thu 07:00 · Forecast133
Thu 08:00 · Forecast106
Thu 09:00 · Forecast95
Thu 10:00 · Forecast94
Thu 11:00 · Forecast96
Thu 12:00 · Forecast98
Thu 13:00 · Forecast99
Thu 14:00 · Forecast99

Pollutants this hour

  • PM2.5 20.8 µg/m³ 24-hour mean 31.1 µg/m³ · 2.1× WHO’s 24-hour guideline (15) 73
  • PM10 26 µg/m³ 23
  • O₃ 77 µg/m³ 77
  • NO₂ 11 µg/m³ 5
  • SO₂ 25 µg/m³ 13
  • CO 0.79 mg/m³ 5

Modelled concentrations at the city’s location (CAMS). The sub-index uses the same averaging as the headline, so the highest one is the AQI.

Nearby cities

City AQI
Semarang Central Java 159
Surabaya East Java 83
Malang East Java 105
Tasikmalaya West Java 86
Bandung West Java 165
Situbondo East Java 62
Jakarta Jakarta 171

Where this number comes from

The Copernicus Atmosphere Monitoring Service (CAMS) forecasts air pollution worldwide on a grid (about 11 km over Europe, about 45 km elsewhere). We take the grid value at Jepara’s coordinates and score it with the US EPA’s method. It is a model, not a measurement: a nearby monitoring station can read quite differently, especially next to busy roads or during fires and dust storms.

Full methodology · Data: CAMS via Open-Meteo (CC BY 4.0); city list: GeoNames (CC BY 4.0).

  • Good 0–50
  • Moderate 51–100
  • Unhealthy for sensitive groups 101–150
  • Unhealthy 151–200
  • Very unhealthy 201–300
  • Hazardous 301–500

Questions

What is the AQI in Jepara right now?
77 on the US EPA scale (Moderate) at 19:00 UTC+7, 3 Nov. O₃ is the pollutant with the highest sub-index. This is a modelled estimate from the Copernicus Atmosphere Monitoring Service (CAMS), not a reading from a monitoring station.

Is it safe to exercise outside in Jepara today?
For most people, yes. The EPA’s statement for “Moderate”: Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. General guidance, not medical advice.

Will the air in Jepara get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 74 around 20:00 to 150 around 17:00 (4 Nov). Forecasts beyond a day are less certain.

How does Jepara compare with other cities?
Right now it is the 322nd most polluted of 849 cities we track worldwide, and 19th of 25 in Indonesia, all on the same US EPA scale.

Why does another app show a different AQI for Jepara?
Apps differ in source (government stations, low-cost sensors or a model like this one), in scale (US EPA, European, or a national index) and in averaging (hourly or NowCast, 8-hour, 24-hour). This page uses the US EPA AQI with EPA’s NowCast for particles, computed from the CAMS forecast for the city’s location.