Stay updated with real-time air quality in Valparaiso, 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)
38
Good
Valparaiso, Indiana
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.45 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.28 μg/m³
0
55
155
255
425
605+
40.65 ppb
0
55
71
86
201
201+
1.86 ppb
0
36
76
186
605
1005+
5.88 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Valparaiso, Indiana
Valparaiso, Indiana
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AQI 43
Good
5.55μg/m³
PM2.5
24.99μg/m³
PM10
46.24ppb
O3
1.96ppb
SO2
5.89ppb
NO2
0.14ppm
CO
AQI 40
Good
5.52μg/m³
PM2.5
25.80μg/m³
PM10
43.26ppb
O3
1.88ppb
SO2
5.86ppb
NO2
0.14ppm
CO
AQI 42
Good
5.00μg/m³
PM2.5
22.54μg/m³
PM10
45.09ppb
O3
1.86ppb
SO2
5.87ppb
NO2
0.14ppm
CO
AQI 42
Good
4.76μg/m³
PM2.5
21.38μg/m³
PM10
45.00ppb
O3
1.88ppb
SO2
5.87ppb
NO2
0.14ppm
CO
AQI 40
Good
5.79μg/m³
PM2.5
26.68μg/m³
PM10
42.76ppb
O3
1.88ppb
SO2
5.88ppb
NO2
0.14ppm
CO
AQI 39
Good
5.79μg/m³
PM2.5
26.75μg/m³
PM10
41.72ppb
O3
1.87ppb
SO2
5.88ppb
NO2
0.14ppm
CO
Air quality data and pollutant measurements for Indiana, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Valparaiso, Indiana is updated every hour.
The worst air quality in Valparaiso, Indiana in the last 24 hours was observed at 12:00:00 on 2026-07-23.
In the last 24 hrs, the best air quality in Valparaiso, Indiana was observed at 03:00:00 on 2026-07-23.
The current air quality in Valparaiso, Indiana is 38, categorized as Good based on real-time data.
The most common pollutant in Valparaiso, Indiana is O3.
If the air quality in Valparaiso, Indiana is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Valparaiso, Indiana is 5.447 μg/m3.
The current PM10 concentration at Valparaiso, Indiana is 26.278 μg/m3.
The current carbon monoxide (CO) concentration at Valparaiso, Indiana is 0.137 ppm.
The current sulfur dioxide (SO2) concentration at Valparaiso, Indiana is 1.865 ppb.
The current ozone (O3) concentration at Valparaiso, Indiana is 40.645 ppm.
The current nitrogen dioxide (NO2) concentration at Valparaiso, Indiana is 5.884 ppb.
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