Stay updated with real-time air quality in Crown Point, Indiana featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
27
Good
Crown Point, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.17 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.82 μg/m³
0
55
155
255
425
605+
3.91 ppb
0
55
71
86
201
201+
1.12 ppb
0
36
76
186
605
1005+
13.10 ppb
0
54
101
361
1250
2050+
0.48 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Crown Point, Indiana
Crown Point, Indiana
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AQI 17
Good
2.49μg/m³
PM2.5
8.94μg/m³
PM10
17.90ppb
O3
0.35ppb
SO2
3.27ppb
NO2
0.27ppm
CO
AQI 17
Good
2.61μg/m³
PM2.5
12.83μg/m³
PM10
17.70ppb
O3
0.38ppb
SO2
3.14ppb
NO2
0.28ppm
CO
AQI 16
Good
2.72μg/m³
PM2.5
10.99μg/m³
PM10
17.50ppb
O3
0.38ppb
SO2
3.21ppb
NO2
0.27ppm
CO
AQI 16
Good
2.41μg/m³
PM2.5
9.99μg/m³
PM10
17.29ppb
O3
0.38ppb
SO2
3.33ppb
NO2
0.27ppm
CO
AQI 16
Good
2.44μg/m³
PM2.5
10.22μg/m³
PM10
17.03ppb
O3
0.39ppb
SO2
3.34ppb
NO2
0.27ppm
CO
AQI 18
Good
2.60μg/m³
PM2.5
12.84μg/m³
PM10
19.37ppb
O3
0.35ppb
SO2
3.11ppb
NO2
0.28ppm
CO
Air quality and pollutant data for Indiana, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Crown Point, Indiana is updated every hour for accuracy.
In the past 24 hours, the air quality in Crown Point, Indiana was at its worst at 03:00:00 on 2025-10-22.
In the last 24 hours, the best air quality in Crown Point, Indiana was observed at 08:00:00 on 2025-10-22.
As of now, the AQI in Crown Point, Indiana is 17, indicating Good conditions.
Crown Point, Indiana air has the highest levels of O3.
Poor air quality in Crown Point, Indiana means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Crown Point, Indiana are currently 2.711 μg/m3.
The PM10 concentration in Crown Point, Indiana is 11.375 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Crown Point, Indiana is 0.275 ppm.
Currently, Crown Point, Indiana has a sulfur dioxide (SO2) concentration of 0.363 ppb.
The current ozone (O3) level in Crown Point, Indiana at the moment is 17.548 ppm.
Nitrogen dioxide (NO2) level in Crown Point, Indiana at the moment is 3.178 ppb.
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