Oslo air quality
Norway · Live AQI and hourly forecast for the next 5 days · updated Sun 01:00 local time
Good
Great air. A perfect time to be outside.
- Next 24 hours
- 25–36US AQI, highest around Sun 22:00
- Best time outside
- Sun 04:00–7:00US AQI about 25
- PM2.5 vs WHO guideline
- 0.4×6.5 µg/m³ over 24 h, guideline 15
- Cigarette equivalent
- ≈ 0.3 a dayBerkeley Earth rule of thumb
- European AQI
- Fairlevel 2 of 6
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Pollutants in Oslo right now
| Pollutant | Now | Next 24 h vs WHO | US AQI band |
|---|---|---|---|
| Fine particles (PM2.5) | 7.1 µg/m³ | 0.4× | Good |
| Coarse particles (PM10) | 10 µg/m³ | 0.2× | Good |
| Nitrogen dioxide (NO2) | 19 µg/m³ | 0.5× | Good |
| Ozone (O3) | 27 µg/m³ | 0.7× | Good |
| Sulphur dioxide (SO2) | 0.9 µg/m³ | 0.0× | Good |
| Carbon monoxide (CO) | 233 µg/m³ | 0.1× | Good |
| Desert dust | 0 µg/m³ | ||
| Smoke and haze (aerosol optical depth) | 0.06 | ||
| UV index | 0.0 |
“Next 24 h vs WHO” compares the forecast with the World Health Organization’s 2021 guideline levels: 24-hour means of 15 µg/m³ for PM2.5, 45 for PM10, 25 for NO2, 40 for SO2 and 4 mg/m³ for CO, and 100 µg/m³ over 8 hours for ozone. Above 1× is above the guideline.
Next 48 hours
Hourly US AQI. Highest 43 around Tue 00:00, lowest 25 around Sun 04:00.
5-day air quality forecast for Oslo
Daily range of the hourly US AQI, from lowest to highest, on a scale of 0 to 150.
| Day | US AQI | At worst | PM2.5 avg | |
|---|---|---|---|---|
| Sun 27 Sept | 25–36 | 6.5 | ||
| Mon 28 Sept | 31–42 | 7.8 | ||
| Tue 29 Sept | 43–52 | 8.5 | ||
| Wed 30 Sept | 27–47 | 3.6 | ||
| Thu 1 Oct | 29–35 | 7.8 |
Common questions about the air in Oslo
Is the air in Oslo safe today?
Yes. Right now the US AQI in Oslo is 29, which counts as good. Great air. A perfect time to be outside.
When is the best time to be outside in Oslo?
Sun 04:00–7:00. That is the cleanest stretch in the next 24 hours, with the US AQI averaging about 25. The worst hour is around Sun 22:00, at 36.
What is the main pollutant in Oslo?
Fine particles (PM2.5). It drives the index right now, at 7.1 µg/m³. Tiny particles from combustion, fires and dust that reach deep into the lungs. The main driver of AQI worldwide.
How does Oslo's air compare with the WHO guideline?
Within the guideline. Over the next 24 hours PM2.5 averages about 6.5 µg/m³, against the World Health Organization's 24-hour guideline of 15 µg/m³. The other pollutants stay within their guideline levels.
How many cigarettes is a day of Oslo's air?
About 0.3 cigarettes. Over the next 24 hours PM2.5 averages about 6.5 µg/m³. By Berkeley Earth's rule of thumb, 22 µg/m³ breathed for a day is roughly one cigarette.
Will air quality in Oslo improve this week?
Thursday looks cleanest. Its AQI peaks at 35, against 52 on Tuesday, the worst day in the forecast.
Measured near Oslo
| Station | PM2.5 µg/m³ | Measured |
|---|---|---|
| Unnamed sensor Sensor.Community, low-cost sensor | 1.7 | Sun 01:48 |
| Unnamed sensor Sensor.Community, low-cost sensor | 0.0 | Sun 01:49 |
| Unnamed sensor Sensor.Community, low-cost sensor | 0.9 | Sun 01:48 |
Air quality near Oslo
- Stockholm 416 km E
- Copenhagen 483 km S
- Hamburg 709 km S
- Helsinki 787 km E
- Berlin 838 km S
- Amsterdam 913 km SW
About this forecast
Forecast from CAMS Europe and global via Open-Meteo: the Copernicus Atmosphere Monitoring Service (CAMS) model at about 40 km resolution (10 km inside Europe), refreshed twice a day. Models smooth out street-level peaks, so busy roads and industrial sites can be worse than shown; ground stations, where there are any nearby, show what monitors actually measure. The US AQI follows the US EPA scale and the European AQI the EEA bands. Readings for 59.91°N, 10.75°E, updated 2026-09-26 23:00 UTC.