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)
33
Good
Crown Point, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.26 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.73 μg/m³
0
55
155
255
425
605+
24.95 ppb
0
55
71
86
201
201+
0.49 ppb
0
36
76
186
605
1005+
4.26 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Crown Point, Indiana
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AQI 27
Good
4.81μg/m³
PM2.5
24.70μg/m³
PM10
24.10ppb
O3
0.48ppb
SO2
5.10ppb
NO2
0.17ppm
CO
AQI 33
Good
6.29μg/m³
PM2.5
25.94μg/m³
PM10
25.00ppb
O3
0.51ppb
SO2
3.81ppb
NO2
0.17ppm
CO
AQI 27
Good
5.13μg/m³
PM2.5
21.82μg/m³
PM10
26.06ppb
O3
0.53ppb
SO2
4.32ppb
NO2
0.17ppm
CO
AQI 58
Moderate
12.72μg/m³
PM2.5
56.97μg/m³
PM10
23.86ppb
O3
0.55ppb
SO2
5.30ppb
NO2
0.17ppm
CO
AQI 58
Moderate
13.00μg/m³
PM2.5
58.13μg/m³
PM10
23.94ppb
O3
0.53ppb
SO2
5.46ppb
NO2
0.17ppm
CO
AQI 33
Good
6.45μg/m³
PM2.5
26.39μg/m³
PM10
25.73ppb
O3
0.49ppb
SO2
2.59ppb
NO2
0.16ppm
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 05:00:00 on 2026-03-10.
In the last 24 hours, the best air quality in Crown Point, Indiana was observed at 03:00:00 on 2026-03-11.
As of now, the AQI in Crown Point, Indiana is 33, 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 6.262 μg/m3.
The PM10 concentration in Crown Point, Indiana is 15.727 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Crown Point, Indiana is 0.165 ppm.
Currently, Crown Point, Indiana has a sulfur dioxide (SO2) concentration of 0.486 ppb.
The current ozone (O3) level in Crown Point, Indiana at the moment is 24.952 ppm.
Nitrogen dioxide (NO2) level in Crown Point, Indiana at the moment is 4.261 ppb.
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