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Air quality · Norway

Oslo Air Quality Index (AQI) today

Modelled estimate for 13:00 local time (UTC+1), refreshed 3 Nov, 07:52 UTC+0.

49 Good

Live estimate · modelled

US EPA AQI13:00 UTC+1, 3 Nov Main pollutant: PM2.5

Air quality is satisfactory, and air pollution poses little or no risk.

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 52.

Over the next 24 hours the model expects the AQI to range from 52 around 14:00 to 87 around 23:00 (3 Nov).

660th most polluted of 849 cities worldwide right now.

What to do today

  • Long walk or run outside OK
  • Kids playing outside OK
  • Airing the house Open
  • Mask outdoors Not needed

Based on the US EPA’s health statement: “Air quality is satisfactory, and air pollution poses little or no risk.” General guidance, not medical advice.

Last 24 hours and next 48

Past hours Forecast

14:00 · 25 15:00 · 26 16:00 · 31 17:00 · 41 18:00 · 52 19:00 · 55 20:00 · 60 21:00 · 63 22:00 · 64 23:00 · 64 00:00 · 60 01:00 · 56 02:00 · 52 03:00 · 48 04:00 · 43 05:00 · 41 06:00 · 38 07:00 · 38 08:00 · 43 09:00 · 51 10:00 · 53 11:00 · 52 12:00 · 50 13:00 · 49 14:00 · 52 15:00 · 55 16:00 · 59 17:00 · 63 18:00 · 67 19:00 · 72 20:00 · 78 21:00 · 83 22:00 · 85 23:00 · 87 00:00 · 86 01:00 · 83 02:00 · 78 03:00 · 74 04:00 · 71 05:00 · 67 06:00 · 64 07:00 · 64 08:00 · 64 09:00 · 63 10:00 · 62 11:00 · 60 12:00 · 60 13:00 · 62 14:00 · 72 15:00 · 80 16:00 · 87 17:00 · 84 18:00 · 84 19:00 · 82 20:00 · 80 21:00 · 77 22:00 · 73 23:00 · 69 00:00 · 64 01:00 · 58 02:00 · 54 03:00 · 48 04:00 · 39 05:00 · 32 06:00 · 30 07:00 · 30 08:00 · 37 Now

US EPA AQI per hour, UTC+1. 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 14:0025
Mon 15:0026
Mon 16:0031
Mon 17:0041
Mon 18:0052
Mon 19:0055
Mon 20:0060
Mon 21:0063
Mon 22:0064
Mon 23:0064
Tue 00:0060
Tue 01:0056
Tue 02:0052
Tue 03:0048
Tue 04:0043
Tue 05:0041
Tue 06:0038
Tue 07:0038
Tue 08:0043
Tue 09:0051
Tue 10:0053
Tue 11:0052
Tue 12:0050
Tue 13:00 · Now49
Tue 14:00 · Forecast52
Tue 15:00 · Forecast55
Tue 16:00 · Forecast59
Tue 17:00 · Forecast63
Tue 18:00 · Forecast67
Tue 19:00 · Forecast72
Tue 20:00 · Forecast78
Tue 21:00 · Forecast83
Tue 22:00 · Forecast85
Tue 23:00 · Forecast87
Wed 00:00 · Forecast86
Wed 01:00 · Forecast83
Wed 02:00 · Forecast78
Wed 03:00 · Forecast74
Wed 04:00 · Forecast71
Wed 05:00 · Forecast67
Wed 06:00 · Forecast64
Wed 07:00 · Forecast64
Wed 08:00 · Forecast64
Wed 09:00 · Forecast63
Wed 10:00 · Forecast62
Wed 11:00 · Forecast60
Wed 12:00 · Forecast60
Wed 13:00 · Forecast62
Wed 14:00 · Forecast72
Wed 15:00 · Forecast80
Wed 16:00 · Forecast87
Wed 17:00 · Forecast84
Wed 18:00 · Forecast84
Wed 19:00 · Forecast82
Wed 20:00 · Forecast80
Wed 21:00 · Forecast77
Wed 22:00 · Forecast73
Wed 23:00 · Forecast69
Thu 00:00 · Forecast64
Thu 01:00 · Forecast58
Thu 02:00 · Forecast54
Thu 03:00 · Forecast48
Thu 04:00 · Forecast39
Thu 05:00 · Forecast32
Thu 06:00 · Forecast30
Thu 07:00 · Forecast30
Thu 08:00 · Forecast37

Pollutants this hour

  • PM2.5 8.6 µg/m³ 24-hour mean 9.9 µg/m³ · within WHO’s 24-hour guideline (15) 49
  • PM10 14 µg/m³ 12
  • O₃ 36 µg/m³ 14
  • NO₂ 24 µg/m³ 11
  • SO₂ 1 µg/m³ 0
  • CO 0.38 mg/m³ 2

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
Gothenburg Sweden 23
Stockholm Sweden 21
Copenhagen Denmark 20
Hamburg Germany 53
Tallinn Estonia 31
Helsinki Finland 27
Berlin Germany 53

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 Oslo’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 Oslo right now?
49 on the US EPA scale (Good) at 13:00 UTC+1, 3 Nov. PM2.5 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 Oslo today?
For most people, yes. The EPA’s statement for “Good”: Air quality is satisfactory, and air pollution poses little or no risk. General guidance, not medical advice.

Will the air in Oslo get better or worse tomorrow?
Over the next 24 hours the model expects the AQI to range from 52 around 14:00 to 87 around 23:00 (3 Nov). Forecasts beyond a day are less certain.

How does Oslo compare with other cities?
Right now it is the 660th most polluted of 849 cities we track worldwide, all on the same US EPA scale.

Why does another app show a different AQI for Oslo?
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.