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
4.27 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.96 μg/m³
0
55
155
255
425
605+
28.58 ppb
0
55
71
86
201
201+
1.48 ppb
0
36
76
186
605
1005+
6.56 ppb
0
54
101
361
1250
2050+
0.21 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 27
Good
4.21μg/m³
PM2.5
18.86μg/m³
PM10
29.03ppb
O3
1.35ppb
SO2
10.69ppb
NO2
0.21ppm
CO
AQI 26
Good
4.36μg/m³
PM2.5
20.38μg/m³
PM10
28.49ppb
O3
1.78ppb
SO2
9.86ppb
NO2
0.19ppm
CO
AQI 27
Good
4.21μg/m³
PM2.5
18.93μg/m³
PM10
28.66ppb
O3
1.76ppb
SO2
9.86ppb
NO2
0.20ppm
CO
AQI 33
Good
5.88μg/m³
PM2.5
25.32μg/m³
PM10
24.45ppb
O3
1.74ppb
SO2
9.53ppb
NO2
0.20ppm
CO
AQI 33
Good
5.86μg/m³
PM2.5
25.23μg/m³
PM10
24.68ppb
O3
1.63ppb
SO2
9.08ppb
NO2
0.20ppm
CO
AQI 27
Good
4.79μg/m³
PM2.5
20.04μg/m³
PM10
28.87ppb
O3
1.68ppb
SO2
9.42ppb
NO2
0.20ppm
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 11:00:00 on 2026-01-24.
In the last 24 hours, the best air quality in Crown Point, Indiana was observed at 01:00:00 on 2026-01-25.
As of now, the AQI in Crown Point, Indiana is 26, 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 4.379 μg/m3.
The PM10 concentration in Crown Point, Indiana is 20.416 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Crown Point, Indiana is 0.209 ppm.
Currently, Crown Point, Indiana has a sulfur dioxide (SO2) concentration of 1.4 ppb.
The current ozone (O3) level in Crown Point, Indiana at the moment is 28.484 ppm.
Nitrogen dioxide (NO2) level in Crown Point, Indiana at the moment is 9.228 ppb.
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