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Medellín air quality

Colombia · Live AQI and hourly forecast for the next 5 days · updated Sat 19:00 local time

42

Good

US AQI, mostly PM2.5

Great air. A perfect time to be outside.

Next 24 hours
31–43US AQI, highest around Sun 16:00
Best time outside
Sat 22:00–1:00US AQI about 31
PM2.5 vs WHO guideline
0.5×7.5 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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The live globe, centred on Medellín. Switch pollutants, drag through the next 5 days or press play. Full map →

Pollutants in Medellín right now

PollutantNowNext 24 h vs WHOUS AQI band
Fine particles (PM2.5) 7.2 µg/m³ 0.5× Good
Coarse particles (PM10) 7.2 µg/m³ 0.2× Good
Nitrogen dioxide (NO2) 19 µg/m³ 0.4× Good
Ozone (O3) 45 µg/m³ 0.9× Good
Sulphur dioxide (SO2) 4.9 µg/m³ 0.1× Good
Carbon monoxide (CO) 920 µg/m³ 0.1× Good
Desert dust0 µg/m³
Smoke and haze (aerosol optical depth)0.20
UV index0.0

“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 44 around Mon 17:00, lowest 31 around Sat 23:00.

Good 0–50Moderate 51–100Sensitive 101–150Unhealthy 151–200Very unhealthy 201–300Hazardous 301+

5-day air quality forecast for Medellín

Daily range of the hourly US AQI, from lowest to highest, on a scale of 0 to 150.

DayUS AQIAt worstWorst hourPM2.5 avgUV max
Sat 26 Sept 31–52 Moderate 0:00 5.6 10
Sun 27 Sept 31–43 Good 16:00 7.3 7.0
Mon 28 Sept 31–44 Good 17:00 5.9 9.4
Tue 29 Sept 33–49 Good 17:00 8.4 11
Wed 30 Sept 37–48 Good 16:00 6.4 8.6

Common questions about the air in Medellín

  1. Is the air in Medellín safe today?

    Yes. Right now the US AQI in Medellín is 42, which counts as good. Great air. A perfect time to be outside.

  2. When is the best time to be outside in Medellín?

    Sat 22:00–1:00. That is the cleanest stretch in the next 24 hours, with the US AQI averaging about 31. The worst hour is around Sun 16:00, at 43.

  3. What is the main pollutant in Medellín?

    Fine particles (PM2.5). It drives the index right now, at 7.2 µg/m³. Tiny particles from combustion, fires and dust that reach deep into the lungs. The main driver of AQI worldwide.

  4. How does Medellín's air compare with the WHO guideline?

    Within the guideline. Over the next 24 hours PM2.5 averages about 7.5 µg/m³, against the World Health Organization's 24-hour guideline of 15 µg/m³. The other pollutants stay within their guideline levels.

  5. How many cigarettes is a day of Medellín's air?

    About 0.3 cigarettes. Over the next 24 hours PM2.5 averages about 7.5 µg/m³. By Berkeley Earth's rule of thumb, 22 µg/m³ breathed for a day is roughly one cigarette.

  6. Will air quality in Medellín improve this week?

    Sunday looks cleanest. Its AQI peaks at 43, against 52 on Saturday, the worst day in the forecast.

Air quality near Medellín

All 161 cities

About this forecast

Forecast from CAMS 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 6.24°N, 75.58°W, updated 2026-09-27 00:00 UTC.