Air Quality in Valparaiso, United States

Windy
27.5°C · 54.3% humidity
27.5°
Feels 30.0°
62
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast
27 12pm
25
25
62 3pm
52
44
39 6pm
35
34
32 9pm
31
30
29 12am
26
28
55 3am
66
83
83 6am
66
54
54 9am
83
84
AD 728×90

Air Quality Index Trend

47h · 1 stn

Valparaiso's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Valparaiso is 1.2× the WHO 24-hour guideline of 15 µg/m³.

54.3%
Humidity
48.7 km/h
Wind NE
1014.3 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
62
17.3 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Valparaiso?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.517.3 µg/m³ ×1.2 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (1 station within 25 km)
17.3
Median
17.3
Average
17.3
Low
17.3
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -11.1
Both models agree Avg diff: 3.5°C

Where are air quality stations near Valparaiso?

62
Ogden Dunes, Indiana, USA
19.7 km PM2.5: 17.3 µg/m³
60
Gary-IITRI, Indiana, USA
25.1 km PM2.5: 16.4 µg/m³
33
Gary-IITRI, Indiana, USA
25.1 km PM2.5: 7.9 µg/m³

What cities are near Valparaiso?

62 Portage 61 Hobart 60 Merrillville 60 Crown Point 61 Gary 52 Michigan City 62 Griffith 38 La Porte 62 Schererville 61 Highland
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T20:26 UTC.