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)
49
Good
Crown Point, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.88 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
39.40 μg/m³
0
55
155
255
425
605+
18.84 ppb
0
55
71
86
201
201+
0.33 ppb
0
36
76
186
605
1005+
3.61 ppb
0
54
101
361
1250
2050+
0.19 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 49
Good
8.59μg/m³
PM2.5
42.28μg/m³
PM10
17.07ppb
O3
0.38ppb
SO2
5.18ppb
NO2
0.19ppm
CO
AQI 56
Moderate
12.29μg/m³
PM2.5
53.69μg/m³
PM10
17.09ppb
O3
0.39ppb
SO2
4.94ppb
NO2
0.20ppm
CO
AQI 56
Moderate
11.68μg/m³
PM2.5
53.67μg/m³
PM10
17.05ppb
O3
0.38ppb
SO2
5.21ppb
NO2
0.20ppm
CO
AQI 56
Moderate
12.46μg/m³
PM2.5
56.13μg/m³
PM10
17.69ppb
O3
0.35ppb
SO2
5.34ppb
NO2
0.20ppm
CO
AQI 56
Moderate
12.13μg/m³
PM2.5
54.70μg/m³
PM10
17.51ppb
O3
0.34ppb
SO2
5.33ppb
NO2
0.20ppm
CO
AQI 54
Moderate
11.32μg/m³
PM2.5
53.72μg/m³
PM10
17.68ppb
O3
0.40ppb
SO2
4.82ppb
NO2
0.18ppm
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 12:00:00 on 2025-12-09.
In the last 24 hours, the best air quality in Crown Point, Indiana was observed at 08:00:00 on 2025-12-09.
As of now, the AQI in Crown Point, Indiana is 49, indicating Good conditions.
Crown Point, Indiana air has the highest levels of PM2.5.
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 8.881 μg/m3.
The PM10 concentration in Crown Point, Indiana is 39.402 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Crown Point, Indiana is 0.188 ppm.
Currently, Crown Point, Indiana has a sulfur dioxide (SO2) concentration of 0.333 ppb.
The current ozone (O3) level in Crown Point, Indiana at the moment is 18.843 ppm.
Nitrogen dioxide (NO2) level in Crown Point, Indiana at the moment is 3.607 ppb.
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