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

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

1. particulate matter (PM2.5) dust - 12 (Good)
2. particulate matter (PM10) suspended dust - 13 (Good)
3. ozone (O3) - 90 (Moderate)
4. nitrogen dioxide (NO2) - 19 (Good)
5. sulfur dioxide (SO2) - 2 (Good)
6. carbon monoxide (CO) - 184 (Good)

Real-time Air Quality Index (AQI) for Philadelphia, Wednesday, August 26, 2026: 2.

What is the current level of PM2.5 in Philadelphia? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 12 (Good) For comparison, the highest level of PM2.5 in Philadelphia in the last 7 days was: 24 (Wednesday, August 19, 2026) and the lowest: 9 (Sunday, August 23, 2026).

What is the level of PM10 today in Philadelphia? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Philadelphia is: 13 (Good)

How is the O3 level today in Philadelphia? (ozone (O3))
90 (Moderate)

How high is the level of NO2? (nitrogen dioxide (NO2))
19 (Good)

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

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

Current data Wednesday, August 26, 2026 at 9:00 PM

Philadelphia

Wednesday, August 26, 2026 at 9:00 PM

🌦️ Weather · 16-day Forecast — United States

16-day weather forecast for United States: today around 30°C (rain), lows near 19°C. Daily temperature and conditions, updated every day. Strong wind (about 25 km/h) is actively clearing smog and dust away.

☀️ UV Index · 16-day Forecast — United States

The UV index in United States today is 7.3 (high) — unprotected fair skin can burn in about 25 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Philadelphia — compare nearby locations.

• Baltimore 6 µg/m³
• OshawaCanada 3 µg/m³
• New York City 20 µg/m³
• Los Angeles 30 µg/m³
• Chicago 10 µg/m³
• Houston 15 µg/m³
• Phoenix 7 µg/m³
• Bronx 20 µg/m³

Frequently asked questions

Is the air safe to breathe in Philadelphia today?

The current average PM2.5 across Philadelphia is about 12 µg/m³, rated “Good”. Air quality is good — outdoor activities are fine for everyone.

What is the current PM2.5 level in Philadelphia?

Right now PM2.5 in Philadelphia averages about 12 µg/m³ (“Good”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

Which day last week had the worst air in Philadelphia?

Over the past week, the highest daily PM2.5 in Philadelphia was recorded on Wednesday, August 19 (about 24 µg/m³).

What is the UV index in Philadelphia today?

The UV index in Philadelphia today is 7.3 (high) — unprotected fair skin can burn in about 25 minutes.

Does today's wind help disperse smog in Philadelphia?

Strong wind (about 25 km/h) is actively clearing smog and dust away.

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.