Northbrook Air Quality Index (AQI) | Air Pollution
Real-time PM2.5, PM10 air pollution level in Northbrook
Last Updated: 2026-09-29 02:01 (Local Time)
17 °C
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Northbrook, Illinois, United States
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Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.
Source:
Berkeley Earth
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Most Polluted Cities 2026
United States
Analyze the real-time most air polluted cities in the country.
Standard Value
1.
Hanford, California
Moderate
1xbelow Standard
2.
Corcoran, California
Moderate
1xequal Standard
3.
Visalia, California
Moderate
1xabove Standard
4.
Keeler, California
Moderate
1xabove Standard
5.
Lone Pine, California
Moderate
1xabove Standard
6.
Olancha, California
Moderate
1xabove Standard
7.
Porterville, California
Moderate
2xabove Standard
8.
Huron, California
Moderate
1xbelow Standard
9.
Walla Walla, Washington
Moderate
1xabove Standard
10.
La Grande, Oregon
Moderate
1xabove Standard
Last Updated: 29 Sept 2026, 07:10 AM
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Frequently Asked Questions About Air Quality
1. What is the current AQI (US) level in Northbrook?
1. What is the current AQI (US) level in Northbrook?
The current real-time AQI (US) level in Northbrook is 33 (Good). This was last updated 2026-09-29 02:01 (Local Time).
2. When was the best AQI (US) level in Northbrook in the last 24 hours?
2. When was the best AQI (US) level in Northbrook in the last 24 hours?
The best AQI (US) level was 25 (Good) at 1:01 PM, Sep 28, 2026 (Local Time) during the last 24 hours.
3. When was the worst AQI (US) level in Northbrook in the last 24 hours?
3. When was the worst AQI (US) level in Northbrook in the last 24 hours?
The worst AQI (US) level was 50 (Good) at 8:01 AM, Sep 28, 2026 (Local Time) during the last 24 hours.
4. What is the current trend of AQI (US) levels in Northbrook during last 24 hours?
4. What is the current trend of AQI (US) levels in Northbrook during last 24 hours?
The AQI (US) levels in Northbrook have been fluctuating throughout the last 24 hours. The levels have increased by highest 50 at 8:01 AM, Sep 28, 2026 (Local Time), lowest 25 at 1:01 PM, Sep 28, 2026 (Local Time).
5. What actions are recommended as per the current AQI (US) level in Northbrook?
5. What actions are recommended as per the current AQI (US) level in Northbrook?
The air quality is satisfactory, and air pollution poses little or no risk. No special precautions are needed; enjoy outdoor activities freely.
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