Karaj: Air Pollution Today — AQI Index, PM2.5/PM10, Smog Alerts and Forecast

Pollution and air quality forecast for Karaj. Today is Thursday, August 27, 2026. The following air pollution values have been recorded for Karaj:

1. particulate matter (PM2.5) dust - 15 (Moderate)
2. particulate matter (PM10) suspended dust - 22 (Moderate)
3. ozone (O3) - 91 (Moderate)
4. nitrogen dioxide (NO2) - 45 (Moderate)
5. sulfur dioxide (SO2) - 36 (Good)
6. carbon monoxide (CO) - 428 (Good)

Real-time Air Quality Index (AQI) for Karaj, Thursday, August 27, 2026: 2.

What is the current level of PM2.5 in Karaj? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 15 (Moderate) For comparison, the highest level of PM2.5 in Karaj in the last 7 days was: 20 (Sunday, August 23, 2026) and the lowest: 11 (Thursday, August 27, 2026).

What is the level of PM10 today in Karaj? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Karaj is: 22 (Moderate)

How is the O3 level today in Karaj? (ozone (O3))
91 (Moderate)

How high is the level of NO2? (nitrogen dioxide (NO2))
45 (Moderate)

What is the level of SO2 pollution? (sulfur dioxide (SO2))
36 (Good)

How high is the CO level? (carbon monoxide (CO))
428 (Good)

Current data Thursday, August 27, 2026 at 4:30 AM

Karaj

Thursday, August 27, 2026 at 4:30 AM

🌦️ Weather · 16-day Forecast — Karaj

16-day weather forecast for Karaj: today around 37°C (clear sky), lows near 22°C. Daily temperature and conditions, updated every day. A moderate breeze (about 16 km/h) is partially dispersing pollutants today.

☀️ UV Index · 16-day Forecast — Karaj

The UV index in Karaj today is 7.9 (high) — unprotected fair skin can burn in about 25 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Karaj — compare nearby locations.

• Tehran 27 µg/m³
• Qom 8 µg/m³
• Rasht 21 µg/m³
• Arak 7 µg/m³
• Hamadan 13 µg/m³
• Eşfahān 24 µg/m³
• Ardabīl 17 µg/m³
• Kahrīz 18 µg/m³

Frequently asked questions

Is the air safe to breathe in Karaj today?

The current average PM2.5 across Karaj is about 15 µg/m³, rated “Moderate”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Karaj?

Right now PM2.5 in Karaj averages about 15 µg/m³ (“Moderate”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

Which day last week had the worst air in Karaj?

Over the past week, the highest daily PM2.5 in Karaj was recorded on Sunday, August 23 (about 20 µg/m³).

What is the UV index in Karaj today?

The UV index in Karaj today is 7.9 (high) — unprotected fair skin can burn in about 25 minutes.

Does today's wind help disperse smog in Karaj?

A moderate breeze (about 16 km/h) is partially dispersing pollutants today.

How is air quality measured?

Air quality here is based on PM2.5 — the concentration of fine particulate matter in µg/m³. Lower values mean cleaner air. Data is updated daily from Open-Meteo.