What is the air quality in Merrillville today?

The current Air Quality Index (AQI) in Merrillville is 24 (Good). PM2.5 concentration is 5.8 µg/m³.

What is the temperature in Merrillville right now?

The current temperature in Merrillville is 11.9°C (feels like 11.9°C). Humidity is 81.2% and wind speed is 60.5 km/h.

Is it safe to go outside in Merrillville?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 10.9 (Extreme).

Air Quality in Merrillville, United States

Windy

11.9°C · 81.2% humidity

11.9°

Feels 11.9°

Good

Air quality is satisfactory. Enjoy outdoor activities.

1 station

Nearby Monitoring Stations

AQI Forecast

25 1pm

24 4pm

25 7pm

25 10pm

25 1am

25 4am

25 7am

25 10am

Air Quality Index Trend

47h · 4 stn

View full history →

Merrillville's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

81.2%

Humidity

60.5 km/h

Wind N

1019.3 hPa

Pressure

10.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

5.8 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Merrillville?

Temperature & Precipitation

PM2.5 Trend

47h · 4 stations

PM2.55.8 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX10.9

Extreme

Station readings (1 station within 25 km)

5.8

Median

5.8

Average

5.8

Low

5.8

High

PM2.5 µg/m³ · Model: 6.0 · Bias: +0.2

What is the 7-day forecast for Merrillville?

05-29

29.2° 7.3°

05-30

23.4° 11.9°

0.06 mm

05-31

29.8° 12.5°

0.19 mm

06-01

31.3° 16.6°

06-02

20.4° 16.3°

5.19 mm

06-03

30.5° 22.1°

06-04

23.4° 12.9°

Both models agree Avg diff: 5.6°C

Where are air quality stations near Merrillville?

Hammond-167th St, Indiana, USA

18.3 km PM2.5: 1.9 µg/m³

Hegewisch 3

25.3 km PM2.5: 6.8 µg/m³

Hegewisch 4

26.1 km PM2.5: 6.6 µg/m³

Hegewisch 2

26.5 km PM2.5: 6.7 µg/m³

Hegewisch 5

26.5 km PM2.5: 7.3 µg/m³

Hegewisch 6

27.1 km PM2.5: 6.7 µg/m³

Hegewisch 1

27.5 km PM2.5: 8.0 µg/m³

South Deering 6

27.8 km PM2.5: 8.1 µg/m³

East Side 4

28.4 km PM2.5: 6.7 µg/m³

Washington HS Collocation 1

28.5 km PM2.5: 5.6 µg/m³

What cities are near Merrillville?

24 Crown Point 25 Hobart 24 Griffith 24 Schererville 24 Gary 24 Highland 24 Dyer 25 Portage 26 Munster 26 Hammond

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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 2026-05-29T21:09 UTC.