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)
31
Good
Crown Point, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.31 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.56 μg/m³
0
55
155
255
425
605+
33.45 ppb
0
55
71
86
201
201+
0.20 ppb
0
36
76
186
605
1005+
1.72 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Crown Point, Indiana
Crown Point, Indiana
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AQI 32
Good
4.15μg/m³
PM2.5
14.06μg/m³
PM10
35.46ppb
O3
0.27ppb
SO2
1.57ppb
NO2
0.18ppm
CO
AQI 31
Good
3.81μg/m³
PM2.5
12.26μg/m³
PM10
33.56ppb
O3
0.30ppb
SO2
1.81ppb
NO2
0.17ppm
CO
AQI 31
Good
4.01μg/m³
PM2.5
14.99μg/m³
PM10
33.09ppb
O3
0.29ppb
SO2
1.72ppb
NO2
0.17ppm
CO
AQI 32
Good
3.65μg/m³
PM2.5
15.57μg/m³
PM10
34.67ppb
O3
0.27ppb
SO2
1.51ppb
NO2
0.17ppm
CO
AQI 32
Good
3.38μg/m³
PM2.5
14.35μg/m³
PM10
34.85ppb
O3
0.26ppb
SO2
1.48ppb
NO2
0.17ppm
CO
AQI 31
Good
3.80μg/m³
PM2.5
12.06μg/m³
PM10
33.62ppb
O3
0.29ppb
SO2
1.70ppb
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 08:00:00 on 2026-04-27.
In the last 24 hours, the best air quality in Crown Point, Indiana was observed at 12:00:00 on 2026-04-28.
As of now, the AQI in Crown Point, Indiana is 31, 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 5.307 μg/m3.
The PM10 concentration in Crown Point, Indiana is 16.559 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Crown Point, Indiana is 0.167 ppm.
Currently, Crown Point, Indiana has a sulfur dioxide (SO2) concentration of 0.201 ppb.
The current ozone (O3) level in Crown Point, Indiana at the moment is 33.454 ppm.
Nitrogen dioxide (NO2) level in Crown Point, Indiana at the moment is 1.715 ppb.
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