What are the current PM10 levels at Merrillville, Indiana?

The current PM10 levels in Merrillville, Indiana are 42.381 μg/m3.

What are the current sulfur dioxide (SO2) levels at Merrillville, Indiana?

The current sulfur dioxide (SO2) levels in Merrillville, Indiana are 0.403 ppb.

What are the current ozone (O3) levels at Merrillville, Indiana?

The current ozone (O3) levels at Merrillville, Indiana is 18.937 ppm.

What are the current nitrogen dioxide (NO2) levels at Merrillville, Indiana?

The current nitrogen dioxide (NO2) levels at Merrillville, Indiana is 5.402 ppb.

Real-time air quality index in Merrillville, Indiana today

Q: What are the current PM2.5 levels in Merrillville, Indiana?

The measured PM2.5 levels in Merrillville, Indiana at present are 8.882 μg/m3.

Stay updated with real-time air quality in Merrillville, Indiana featuring accurate data on AQI, PM_2.5, 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)

Good

Merrillville, Indiana

Last updated: ... (Local time)

Common air pollutants in Merrillville, Indiana

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

8.32 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

35.60 μg/m³

155

255

425

605+

Ozone (O₃)

18.29 ppb

201

201+

Sulfur Dioxide (SO₂)

0.33 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.42 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.19 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Merrillville, Indiana

Get Live Pollen Counts

Merrillville, Indiana

Scroll To Air Quality Map

Track live Merrillville, Indiana air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-08T08:00:00.000Z	22 \| good	2.923 \| good	11.864 \| good	24.22 \| good	4.797 \| good	18.769 \| good	0.202 \| good
2025-12-08T09:00:00.000Z	20 \| good	2.664 \| good	13.263 \| good	22.145 \| good	6.285 \| good	18.941 \| good	0.183 \| good
2025-12-08T10:00:00.000Z	30 \| good	3.859 \| good	20.569 \| good	21.266 \| good	6.433 \| good	31.907 \| good	0.22 \| good
2025-12-08T11:00:00.000Z	28 \| good	5.192 \| good	12.858 \| good	13.756 \| good	5.133 \| good	30.056 \| good	0.228 \| good
2025-12-08T12:00:00.000Z	27 \| good	4.303 \| good	16.628 \| good	13.985 \| good	4.332 \| good	29.274 \| good	0.287 \| good
2025-12-08T13:00:00.000Z	26 \| good	3.931 \| good	21.25 \| good	12.738 \| good	1.489 \| good	28.117 \| good	0.33 \| good
2025-12-08T14:00:00.000Z	27 \| good	3.908 \| good	27.467 \| good	13.704 \| good	0.772 \| good	28.936 \| good	0.401 \| good
2025-12-08T15:00:00.000Z	24 \| good	4.1 \| good	21.733 \| good	16.744 \| good	0.52 \| good	24.883 \| good	0.428 \| good
2025-12-08T16:00:00.000Z	22 \| good	3.037 \| good	12.92 \| good	20.646 \| good	0.587 \| good	23.412 \| good	0.401 \| good
2025-12-08T17:00:00.000Z	20 \| good	3.442 \| good	15.735 \| good	22.313 \| good	0.575 \| good	17.326 \| good	0.19 \| good
2025-12-08T18:00:00.000Z	23 \| good	3.765 \| good	16.296 \| good	24.827 \| good	0.497 \| good	6.692 \| good	0.145 \| good
2025-12-08T19:00:00.000Z	27 \| good	3.405 \| good	14.028 \| good	28.759 \| good	0.552 \| good	6.057 \| good	0.172 \| good
2025-12-08T20:00:00.000Z	29 \| good	2.767 \| good	13.226 \| good	30.985 \| good	0.537 \| good	7.178 \| good	0.172 \| good
2025-12-08T21:00:00.000Z	28 \| good	2.557 \| good	11.19 \| good	29.716 \| good	0.595 \| good	9.209 \| good	0.198 \| good
2025-12-08T22:00:00.000Z	29 \| good	2.589 \| good	12.645 \| good	30.715 \| good	0.553 \| good	16.105 \| good	0.243 \| good
2025-12-08T23:00:00.000Z	29 \| good	2.781 \| good	14.129 \| good	30.811 \| good	0.547 \| good	20.767 \| good	0.217 \| good
2025-12-09T00:00:00.000Z	26 \| good	3.86 \| good	23.412 \| good	28.171 \| good	0.558 \| good	19.191 \| good	0.236 \| good
2025-12-09T01:00:00.000Z	27 \| good	4.938 \| good	25.505 \| good	24.198 \| good	0.523 \| good	22.407 \| good	0.217 \| good
2025-12-09T02:00:00.000Z	27 \| good	5.255 \| good	25.093 \| good	26.683 \| good	0.464 \| good	18.599 \| good	0.217 \| good
2025-12-09T03:00:00.000Z	33 \| good	5.513 \| good	23.966 \| good	20.787 \| good	0.912 \| good	10.514 \| good	0.244 \| good
2025-12-09T04:00:00.000Z	27 \| good	4.951 \| good	19.156 \| good	19.197 \| good	0.395 \| good	14.91 \| good	0.185 \| good
2025-12-09T05:00:00.000Z	32 \| good	5.096 \| good	35.201 \| good	17.878 \| good	0.465 \| good	10.073 \| good	0.185 \| good
2025-12-09T06:00:00.000Z	27 \| good	4.798 \| good	21.807 \| good	18.103 \| good	0.405 \| good	10.536 \| good	0.185 \| good
2025-12-09T07:00:00.000Z	27 \| good	4.58 \| good	21.664 \| good	20.027 \| good	0.459 \| good	10.623 \| good	0.185 \| good
2025-12-09T08:00:00.000Z	33 \| good	5.52 \| good	27.956 \| good	25.806 \| good	0.456 \| good	8.326 \| good	0.159 \| good
2025-12-09T09:00:00.000Z	44 \| good	8.19 \| good	33.499 \| good	23.866 \| good	0.461 \| good	8.21 \| good	0.14 \| good
2025-12-09T10:00:00.000Z	49 \| good	9.139 \| good	40.262 \| good	21.63 \| good	0.487 \| good	7.675 \| good	0.159 \| good
2025-12-09T11:00:00.000Z	49 \| good	9.349 \| good	35.736 \| good	20.465 \| good	0.417 \| good	6.307 \| good	0.159 \| good
2025-12-09T12:00:00.000Z	58 \| moderate	13.129 \| fine	58.131 \| fine	20.569 \| good	0.41 \| good	7.316 \| good	0.185 \| good
2025-12-09T13:00:00.000Z	49 \| good	8.554 \| good	33.424 \| good	21.649 \| good	0.459 \| good	7.258 \| good	0.185 \| good
2025-12-09T14:00:00.000Z	49 \| good	9.455 \| good	49.467 \| good	21.298 \| good	0.424 \| good	7.937 \| good	0.224 \| good
2025-12-09T15:00:00.000Z	49 \| good	8.79 \| good	39.224 \| good	21.425 \| good	0.437 \| good	6.806 \| good	0.185 \| good
2025-12-09T16:00:00.000Z	44 \| good	7.87 \| good	42.141 \| good	20.92 \| good	0.505 \| good	6.383 \| good	0.185 \| good
2025-12-09T17:00:00.000Z	49 \| good	8.502 \| good	46.132 \| good	21.006 \| good	0.51 \| good	5.756 \| good	0.185 \| good
2025-12-09T18:00:00.000Z	38 \| good	7.232 \| good	37.433 \| good	23.056 \| good	0.458 \| good	4.489 \| good	0.185 \| good
2025-12-09T19:00:00.000Z	38 \| good	7.469 \| good	33.715 \| good	22.398 \| good	0.446 \| good	4.622 \| good	0.185 \| good
2025-12-09T20:00:00.000Z	38 \| good	7.24 \| good	31.662 \| good	22.061 \| good	0.426 \| good	5.799 \| good	0.172 \| good
2025-12-09T21:00:00.000Z	44 \| good	8.311 \| good	32.447 \| good	21.668 \| good	0.452 \| good	6.293 \| good	0.198 \| good
2025-12-09T22:00:00.000Z	52 \| moderate	10.11 \| good	50.158 \| good	22.349 \| good	0.412 \| good	9.27 \| good	0.198 \| good
2025-12-09T23:00:00.000Z	52 \| moderate	9.752 \| good	55.099 \| fine	22.678 \| good	0.439 \| good	10.839 \| good	0.198 \| good
2025-12-10T00:00:00.000Z	49 \| good	8.905 \| good	39.435 \| good	20.651 \| good	0.439 \| good	11.715 \| good	0.172 \| good
2025-12-10T01:00:00.000Z	44 \| good	8.428 \| good	40.614 \| good	19.531 \| good	0.319 \| good	11.513 \| good	0.19 \| good
2025-12-10T02:00:00.000Z	49 \| good	8.617 \| good	36.068 \| good	19.997 \| good	0.394 \| good	12.553 \| good	0.209 \| good
2025-12-10T03:00:00.000Z	38 \| good	7.09 \| good	31.045 \| good	30.374 \| good	0.768 \| good	6.083 \| good	0.214 \| good
2025-12-10T04:00:00.000Z	49 \| good	8.882 \| good	42.381 \| good	18.937 \| good	0.403 \| good	5.402 \| good	0.204 \| good
2025-12-10T05:00:00.000Z	49 \| good	8.588 \| good	42.281 \| good	17.069 \| good	0.379 \| good	5.181 \| good	0.19 \| good
2025-12-10T06:00:00.000Z	44 \| good	8.317 \| good	35.603 \| good	18.291 \| good	0.325 \| good	3.423 \| good	0.19 \| good
2025-12-10T07:00:00.000Z	44 \| good	8.317 \| good	35.603 \| good	18.291 \| good	0.325 \| good	3.423 \| good	0.19 \| good
2025-12-10T06:00:00.000Z	33 \| good	6.144 \| good	27.028 \| good	31.432 \| good	0.61 \| good	3.779 \| good	0.192 \| good
2025-12-10T07:00:00.000Z	38 \| good	6.861 \| good	30.05 \| good	28.773 \| good	0.573 \| good	3.727 \| good	0.185 \| good
2025-12-10T08:00:00.000Z	38 \| good	6.862 \| good	30.016 \| good	30.096 \| good	0.536 \| good	3.675 \| good	0.177 \| good
2025-12-10T09:00:00.000Z	38 \| good	7.098 \| good	31.065 \| good	32.122 \| good	0.499 \| good	3.623 \| good	0.17 \| good
2025-12-10T10:00:00.000Z	31 \| good	5.357 \| good	23.025 \| good	33.477 \| good	0.493 \| good	3.311 \| good	0.155 \| good
2025-12-10T11:00:00.000Z	30 \| good	2.833 \| good	12.046 \| good	31.873 \| good	0.488 \| good	2.999 \| good	0.141 \| good
2025-12-10T12:00:00.000Z	29 \| good	4.898 \| good	21.095 \| good	31.112 \| good	0.483 \| good	2.688 \| good	0.127 \| good
2025-12-10T13:00:00.000Z	44 \| good	8.423 \| good	37.145 \| good	23.857 \| good	0.557 \| good	3.797 \| good	0.147 \| good
2025-12-10T14:00:00.000Z	58 \| moderate	13.413 \| fine	60.879 \| fine	20.995 \| good	0.631 \| good	4.906 \| good	0.168 \| good
2025-12-10T15:00:00.000Z	52 \| moderate	10.484 \| good	46.039 \| good	23.013 \| good	0.706 \| good	6.015 \| good	0.188 \| good
2025-12-10T16:00:00.000Z	38 \| good	7.477 \| good	32.955 \| good	25.35 \| good	0.67 \| good	4.967 \| good	0.181 \| good
2025-12-10T17:00:00.000Z	33 \| good	5.814 \| good	24.994 \| good	24.902 \| good	0.635 \| good	3.919 \| good	0.174 \| good
2025-12-10T18:00:00.000Z	27 \| good	5.115 \| good	21.99 \| good	25.455 \| good	0.599 \| good	2.871 \| good	0.167 \| good
2025-12-10T19:00:00.000Z	27 \| good	5.001 \| good	21.94 \| good	25.383 \| good	0.673 \| good	3.486 \| good	0.169 \| good
2025-12-10T20:00:00.000Z	23 \| good	4.274 \| good	18.981 \| good	25.446 \| good	0.746 \| good	4.1 \| good	0.171 \| good
2025-12-10T21:00:00.000Z	22 \| good	4.172 \| good	18.064 \| good	24.332 \| good	0.82 \| good	4.715 \| good	0.173 \| good
2025-12-10T22:00:00.000Z	22 \| good	4.241 \| good	18.977 \| good	22.142 \| good	0.821 \| good	4.85 \| good	0.171 \| good
2025-12-10T23:00:00.000Z	27 \| good	4.535 \| good	20.045 \| good	18.513 \| good	0.823 \| good	4.986 \| good	0.169 \| good
2025-12-11T00:00:00.000Z	22 \| good	4.348 \| good	19.019 \| good	18.275 \| good	0.824 \| good	5.121 \| good	0.168 \| good
2025-12-11T01:00:00.000Z	22 \| good	4.268 \| good	18.99 \| good	21.509 \| good	0.835 \| good	5.159 \| good	0.168 \| good
2025-12-11T02:00:00.000Z	27 \| good	5.287 \| good	22.975 \| good	24.279 \| good	0.846 \| good	5.197 \| good	0.168 \| good
2025-12-11T03:00:00.000Z	33 \| good	5.841 \| good	25.139 \| good	20.524 \| good	0.857 \| good	5.235 \| good	0.168 \| good
2025-12-11T04:00:00.000Z	27 \| good	5.066 \| good	22.012 \| good	21.049 \| good	0.839 \| good	4.865 \| good	0.167 \| good
2025-12-11T05:00:00.000Z	22 \| good	3.769 \| good	16.069 \| good	23.196 \| good	0.82 \| good	4.494 \| good	0.165 \| good
2025-12-11T06:00:00.000Z	27 \| good	4.524 \| good	19.985 \| good	21.361 \| good	0.801 \| good	4.124 \| good	0.164 \| good
2025-12-11T07:00:00.000Z	33 \| good	5.64 \| good	24.069 \| good	20.823 \| good	0.8 \| good	3.825 \| good	0.162 \| good
2025-12-11T08:00:00.000Z	33 \| good	5.85 \| good	25.135 \| good	21.247 \| good	0.799 \| good	3.526 \| good	0.159 \| good
2025-12-11T09:00:00.000Z	33 \| good	5.51 \| good	23.97 \| good	20.615 \| good	0.798 \| good	3.226 \| good	0.157 \| good
2025-12-11T10:00:00.000Z	27 \| good	5.496 \| good	23.079 \| good	19.552 \| good	0.849 \| good	3.553 \| good	0.157 \| good
2025-12-11T11:00:00.000Z	27 \| good	4.878 \| good	21.01 \| good	17.622 \| good	0.9 \| good	3.88 \| good	0.157 \| good
2025-12-11T12:00:00.000Z	38 \| good	6.844 \| good	30.065 \| good	14.747 \| good	0.951 \| good	4.206 \| good	0.157 \| good
2025-12-11T13:00:00.000Z	44 \| good	7.615 \| good	33.955 \| good	13.222 \| good	1.077 \| good	4.911 \| good	0.166 \| good
2025-12-11T14:00:00.000Z	49 \| good	8.98 \| good	39.24 \| good	13.817 \| good	1.203 \| good	5.615 \| good	0.174 \| good
2025-12-11T15:00:00.000Z	38 \| good	7.415 \| good	32.198 \| good	17.429 \| good	1.329 \| good	6.32 \| good	0.183 \| good
2025-12-11T16:00:00.000Z	33 \| good	5.971 \| good	26.944 \| good	21.831 \| good	1.44 \| good	5.951 \| good	0.184 \| good
2025-12-11T17:00:00.000Z	27 \| good	4.77 \| good	20.978 \| good	25.19 \| good	1.552 \| good	5.582 \| good	0.185 \| good
2025-12-11T18:00:00.000Z	27 \| good	4.64 \| good	20.054 \| good	26.174 \| good	1.663 \| good	5.213 \| good	0.186 \| good
2025-12-11T19:00:00.000Z	26 \| good	3.858 \| good	16.986 \| good	28.081 \| good	1.709 \| good	5.78 \| good	0.186 \| good
2025-12-11T20:00:00.000Z	27 \| good	3.494 \| good	15.076 \| good	28.919 \| good	1.754 \| good	6.346 \| good	0.186 \| good
2025-12-11T21:00:00.000Z	28 \| good	4.081 \| good	18.033 \| good	29.895 \| good	1.799 \| good	6.913 \| good	0.186 \| good
2025-12-11T22:00:00.000Z	24 \| good	3.701 \| good	16.075 \| good	26.479 \| good	1.906 \| good	10.059 \| good	0.207 \| good
2025-12-11T23:00:00.000Z	21 \| good	3.035 \| good	12.11 \| good	23.413 \| good	2.013 \| good	13.205 \| good	0.229 \| good
2025-12-12T00:00:00.000Z	23 \| good	3.361 \| good	14.979 \| good	25.003 \| good	2.12 \| good	16.351 \| good	0.251 \| good
2025-12-12T01:00:00.000Z	25 \| good	3.614 \| good	15.978 \| good	26.654 \| good	2.336 \| good	17.218 \| good	0.265 \| good
2025-12-12T02:00:00.000Z	25 \| good	3.758 \| good	16.083 \| good	27.119 \| good	2.553 \| good	18.085 \| good	0.28 \| good
2025-12-12T03:00:00.000Z	23 \| good	3.871 \| good	17.033 \| good	25.495 \| good	2.77 \| good	18.952 \| good	0.295 \| good
2025-12-12T04:00:00.000Z	27 \| good	4.666 \| good	20.045 \| good	25.744 \| good	2.76 \| good	18.393 \| good	0.294 \| good
2025-12-12T05:00:00.000Z	33 \| good	5.904 \| good	26.862 \| good	22.351 \| good	2.75 \| good	17.834 \| good	0.292 \| good

Merrillville

Empower business decisions with accurate air quality data

Merrillville, Indiana air quality map: Real-time AQI near you

0.20ppm

How accurate is Indiana, USA air quality data?

Air quality measurements for Indiana, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.

Source: Ambee Data Sources

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Frequently asked questions

How frequently is the air quality data for Merrillville, Indiana updated?

Air quality data for Merrillville, Indiana is updated on an hourly basis.

When did Merrillville, Indiana experience the worst air quality in the last 24 hours?

The worst air quality in Merrillville, Indiana was recorded at 12:00:00 on 2025-12-09.

When did Merrillville, Indiana have its best air quality in the last 24 hours?

The best air quality in Merrillville, Indiana was recorded at 07:00:00 on 2025-12-09.

What is the real-time air quality index for Merrillville, Indiana?

The real-time air quality index in Merrillville, Indiana is 49, currently categorized as Good.

Which pollutant is found most often in Merrillville, Indiana?

The most common pollutant in Merrillville, Indiana is PM2.5.

What can I do if the air quality in Merrillville, Indiana is poor?

If the air quality in Merrillville, Indiana is poor, limit outdoor activities and use a mask to safeguard your health.

What are the current PM_2.5 levels in Merrillville, Indiana?

The measured PM_2.5 levels in Merrillville, Indiana at present are 8.882 μg/m³.

What are the current PM₁₀ levels at Merrillville, Indiana?

The current PM₁₀ levels in Merrillville, Indiana are 42.381 μg/m³.

What are the current carbon monoxide (CO) levels at Merrillville, Indiana?

The current carbon monoxide (CO) level in Merrillville, Indiana is 0.204 ppm.

What are the current sulfur dioxide (SO₂) levels at Merrillville, Indiana?

The current sulfur dioxide (SO₂) levels in Merrillville, Indiana are 0.403 ppb.

What are the current ozone (O₃) levels at Merrillville, Indiana?

The current ozone (O₃) levels at Merrillville, Indiana is 18.937 ppm.

What are the current nitrogen dioxide (NO₂) levels at Merrillville, Indiana?

The current nitrogen dioxide (NO₂) levels at Merrillville, Indiana is 5.402 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-12-08T08:00:00.000Z	22 \| good	2.923 \| good	11.864 \| good	24.22 \| good	4.797 \| good	18.769 \| good	0.202 \| good
2025-12-08T09:00:00.000Z	20 \| good	2.664 \| good	13.263 \| good	22.145 \| good	6.285 \| good	18.941 \| good	0.183 \| good
2025-12-08T10:00:00.000Z	30 \| good	3.859 \| good	20.569 \| good	21.266 \| good	6.433 \| good	31.907 \| good	0.22 \| good
2025-12-08T11:00:00.000Z	28 \| good	5.192 \| good	12.858 \| good	13.756 \| good	5.133 \| good	30.056 \| good	0.228 \| good
2025-12-08T12:00:00.000Z	27 \| good	4.303 \| good	16.628 \| good	13.985 \| good	4.332 \| good	29.274 \| good	0.287 \| good
2025-12-08T13:00:00.000Z	26 \| good	3.931 \| good	21.25 \| good	12.738 \| good	1.489 \| good	28.117 \| good	0.33 \| good
2025-12-08T14:00:00.000Z	27 \| good	3.908 \| good	27.467 \| good	13.704 \| good	0.772 \| good	28.936 \| good	0.401 \| good
2025-12-08T15:00:00.000Z	24 \| good	4.1 \| good	21.733 \| good	16.744 \| good	0.52 \| good	24.883 \| good	0.428 \| good
2025-12-08T16:00:00.000Z	22 \| good	3.037 \| good	12.92 \| good	20.646 \| good	0.587 \| good	23.412 \| good	0.401 \| good
2025-12-08T17:00:00.000Z	20 \| good	3.442 \| good	15.735 \| good	22.313 \| good	0.575 \| good	17.326 \| good	0.19 \| good
2025-12-08T18:00:00.000Z	23 \| good	3.765 \| good	16.296 \| good	24.827 \| good	0.497 \| good	6.692 \| good	0.145 \| good
2025-12-08T19:00:00.000Z	27 \| good	3.405 \| good	14.028 \| good	28.759 \| good	0.552 \| good	6.057 \| good	0.172 \| good
2025-12-08T20:00:00.000Z	29 \| good	2.767 \| good	13.226 \| good	30.985 \| good	0.537 \| good	7.178 \| good	0.172 \| good
2025-12-08T21:00:00.000Z	28 \| good	2.557 \| good	11.19 \| good	29.716 \| good	0.595 \| good	9.209 \| good	0.198 \| good
2025-12-08T22:00:00.000Z	29 \| good	2.589 \| good	12.645 \| good	30.715 \| good	0.553 \| good	16.105 \| good	0.243 \| good
2025-12-08T23:00:00.000Z	29 \| good	2.781 \| good	14.129 \| good	30.811 \| good	0.547 \| good	20.767 \| good	0.217 \| good
2025-12-09T00:00:00.000Z	26 \| good	3.86 \| good	23.412 \| good	28.171 \| good	0.558 \| good	19.191 \| good	0.236 \| good
2025-12-09T01:00:00.000Z	27 \| good	4.938 \| good	25.505 \| good	24.198 \| good	0.523 \| good	22.407 \| good	0.217 \| good
2025-12-09T02:00:00.000Z	27 \| good	5.255 \| good	25.093 \| good	26.683 \| good	0.464 \| good	18.599 \| good	0.217 \| good
2025-12-09T03:00:00.000Z	33 \| good	5.513 \| good	23.966 \| good	20.787 \| good	0.912 \| good	10.514 \| good	0.244 \| good
2025-12-09T04:00:00.000Z	27 \| good	4.951 \| good	19.156 \| good	19.197 \| good	0.395 \| good	14.91 \| good	0.185 \| good
2025-12-09T05:00:00.000Z	32 \| good	5.096 \| good	35.201 \| good	17.878 \| good	0.465 \| good	10.073 \| good	0.185 \| good
2025-12-09T06:00:00.000Z	27 \| good	4.798 \| good	21.807 \| good	18.103 \| good	0.405 \| good	10.536 \| good	0.185 \| good
2025-12-09T07:00:00.000Z	27 \| good	4.58 \| good	21.664 \| good	20.027 \| good	0.459 \| good	10.623 \| good	0.185 \| good
2025-12-09T08:00:00.000Z	33 \| good	5.52 \| good	27.956 \| good	25.806 \| good	0.456 \| good	8.326 \| good	0.159 \| good
2025-12-09T09:00:00.000Z	44 \| good	8.19 \| good	33.499 \| good	23.866 \| good	0.461 \| good	8.21 \| good	0.14 \| good
2025-12-09T10:00:00.000Z	49 \| good	9.139 \| good	40.262 \| good	21.63 \| good	0.487 \| good	7.675 \| good	0.159 \| good
2025-12-09T11:00:00.000Z	49 \| good	9.349 \| good	35.736 \| good	20.465 \| good	0.417 \| good	6.307 \| good	0.159 \| good
2025-12-09T12:00:00.000Z	58 \| moderate	13.129 \| fine	58.131 \| fine	20.569 \| good	0.41 \| good	7.316 \| good	0.185 \| good
2025-12-09T13:00:00.000Z	49 \| good	8.554 \| good	33.424 \| good	21.649 \| good	0.459 \| good	7.258 \| good	0.185 \| good
2025-12-09T14:00:00.000Z	49 \| good	9.455 \| good	49.467 \| good	21.298 \| good	0.424 \| good	7.937 \| good	0.224 \| good
2025-12-09T15:00:00.000Z	49 \| good	8.79 \| good	39.224 \| good	21.425 \| good	0.437 \| good	6.806 \| good	0.185 \| good
2025-12-09T16:00:00.000Z	44 \| good	7.87 \| good	42.141 \| good	20.92 \| good	0.505 \| good	6.383 \| good	0.185 \| good
2025-12-09T17:00:00.000Z	49 \| good	8.502 \| good	46.132 \| good	21.006 \| good	0.51 \| good	5.756 \| good	0.185 \| good
2025-12-09T18:00:00.000Z	38 \| good	7.232 \| good	37.433 \| good	23.056 \| good	0.458 \| good	4.489 \| good	0.185 \| good
2025-12-09T19:00:00.000Z	38 \| good	7.469 \| good	33.715 \| good	22.398 \| good	0.446 \| good	4.622 \| good	0.185 \| good
2025-12-09T20:00:00.000Z	38 \| good	7.24 \| good	31.662 \| good	22.061 \| good	0.426 \| good	5.799 \| good	0.172 \| good
2025-12-09T21:00:00.000Z	44 \| good	8.311 \| good	32.447 \| good	21.668 \| good	0.452 \| good	6.293 \| good	0.198 \| good
2025-12-09T22:00:00.000Z	52 \| moderate	10.11 \| good	50.158 \| good	22.349 \| good	0.412 \| good	9.27 \| good	0.198 \| good
2025-12-09T23:00:00.000Z	52 \| moderate	9.752 \| good	55.099 \| fine	22.678 \| good	0.439 \| good	10.839 \| good	0.198 \| good
2025-12-10T00:00:00.000Z	49 \| good	8.905 \| good	39.435 \| good	20.651 \| good	0.439 \| good	11.715 \| good	0.172 \| good
2025-12-10T01:00:00.000Z	44 \| good	8.428 \| good	40.614 \| good	19.531 \| good	0.319 \| good	11.513 \| good	0.19 \| good
2025-12-10T02:00:00.000Z	49 \| good	8.617 \| good	36.068 \| good	19.997 \| good	0.394 \| good	12.553 \| good	0.209 \| good
2025-12-10T03:00:00.000Z	38 \| good	7.09 \| good	31.045 \| good	30.374 \| good	0.768 \| good	6.083 \| good	0.214 \| good
2025-12-10T04:00:00.000Z	49 \| good	8.882 \| good	42.381 \| good	18.937 \| good	0.403 \| good	5.402 \| good	0.204 \| good
2025-12-10T05:00:00.000Z	49 \| good	8.588 \| good	42.281 \| good	17.069 \| good	0.379 \| good	5.181 \| good	0.19 \| good
2025-12-10T06:00:00.000Z	44 \| good	8.317 \| good	35.603 \| good	18.291 \| good	0.325 \| good	3.423 \| good	0.19 \| good
2025-12-10T07:00:00.000Z	44 \| good	8.317 \| good	35.603 \| good	18.291 \| good	0.325 \| good	3.423 \| good	0.19 \| good
2025-12-10T06:00:00.000Z	33 \| good	6.144 \| good	27.028 \| good	31.432 \| good	0.61 \| good	3.779 \| good	0.192 \| good
2025-12-10T07:00:00.000Z	38 \| good	6.861 \| good	30.05 \| good	28.773 \| good	0.573 \| good	3.727 \| good	0.185 \| good
2025-12-10T08:00:00.000Z	38 \| good	6.862 \| good	30.016 \| good	30.096 \| good	0.536 \| good	3.675 \| good	0.177 \| good
2025-12-10T09:00:00.000Z	38 \| good	7.098 \| good	31.065 \| good	32.122 \| good	0.499 \| good	3.623 \| good	0.17 \| good
2025-12-10T10:00:00.000Z	31 \| good	5.357 \| good	23.025 \| good	33.477 \| good	0.493 \| good	3.311 \| good	0.155 \| good
2025-12-10T11:00:00.000Z	30 \| good	2.833 \| good	12.046 \| good	31.873 \| good	0.488 \| good	2.999 \| good	0.141 \| good
2025-12-10T12:00:00.000Z	29 \| good	4.898 \| good	21.095 \| good	31.112 \| good	0.483 \| good	2.688 \| good	0.127 \| good
2025-12-10T13:00:00.000Z	44 \| good	8.423 \| good	37.145 \| good	23.857 \| good	0.557 \| good	3.797 \| good	0.147 \| good
2025-12-10T14:00:00.000Z	58 \| moderate	13.413 \| fine	60.879 \| fine	20.995 \| good	0.631 \| good	4.906 \| good	0.168 \| good
2025-12-10T15:00:00.000Z	52 \| moderate	10.484 \| good	46.039 \| good	23.013 \| good	0.706 \| good	6.015 \| good	0.188 \| good
2025-12-10T16:00:00.000Z	38 \| good	7.477 \| good	32.955 \| good	25.35 \| good	0.67 \| good	4.967 \| good	0.181 \| good
2025-12-10T17:00:00.000Z	33 \| good	5.814 \| good	24.994 \| good	24.902 \| good	0.635 \| good	3.919 \| good	0.174 \| good
2025-12-10T18:00:00.000Z	27 \| good	5.115 \| good	21.99 \| good	25.455 \| good	0.599 \| good	2.871 \| good	0.167 \| good
2025-12-10T19:00:00.000Z	27 \| good	5.001 \| good	21.94 \| good	25.383 \| good	0.673 \| good	3.486 \| good	0.169 \| good
2025-12-10T20:00:00.000Z	23 \| good	4.274 \| good	18.981 \| good	25.446 \| good	0.746 \| good	4.1 \| good	0.171 \| good
2025-12-10T21:00:00.000Z	22 \| good	4.172 \| good	18.064 \| good	24.332 \| good	0.82 \| good	4.715 \| good	0.173 \| good
2025-12-10T22:00:00.000Z	22 \| good	4.241 \| good	18.977 \| good	22.142 \| good	0.821 \| good	4.85 \| good	0.171 \| good
2025-12-10T23:00:00.000Z	27 \| good	4.535 \| good	20.045 \| good	18.513 \| good	0.823 \| good	4.986 \| good	0.169 \| good
2025-12-11T00:00:00.000Z	22 \| good	4.348 \| good	19.019 \| good	18.275 \| good	0.824 \| good	5.121 \| good	0.168 \| good
2025-12-11T01:00:00.000Z	22 \| good	4.268 \| good	18.99 \| good	21.509 \| good	0.835 \| good	5.159 \| good	0.168 \| good
2025-12-11T02:00:00.000Z	27 \| good	5.287 \| good	22.975 \| good	24.279 \| good	0.846 \| good	5.197 \| good	0.168 \| good
2025-12-11T03:00:00.000Z	33 \| good	5.841 \| good	25.139 \| good	20.524 \| good	0.857 \| good	5.235 \| good	0.168 \| good
2025-12-11T04:00:00.000Z	27 \| good	5.066 \| good	22.012 \| good	21.049 \| good	0.839 \| good	4.865 \| good	0.167 \| good
2025-12-11T05:00:00.000Z	22 \| good	3.769 \| good	16.069 \| good	23.196 \| good	0.82 \| good	4.494 \| good	0.165 \| good
2025-12-11T06:00:00.000Z	27 \| good	4.524 \| good	19.985 \| good	21.361 \| good	0.801 \| good	4.124 \| good	0.164 \| good
2025-12-11T07:00:00.000Z	33 \| good	5.64 \| good	24.069 \| good	20.823 \| good	0.8 \| good	3.825 \| good	0.162 \| good
2025-12-11T08:00:00.000Z	33 \| good	5.85 \| good	25.135 \| good	21.247 \| good	0.799 \| good	3.526 \| good	0.159 \| good
2025-12-11T09:00:00.000Z	33 \| good	5.51 \| good	23.97 \| good	20.615 \| good	0.798 \| good	3.226 \| good	0.157 \| good
2025-12-11T10:00:00.000Z	27 \| good	5.496 \| good	23.079 \| good	19.552 \| good	0.849 \| good	3.553 \| good	0.157 \| good
2025-12-11T11:00:00.000Z	27 \| good	4.878 \| good	21.01 \| good	17.622 \| good	0.9 \| good	3.88 \| good	0.157 \| good
2025-12-11T12:00:00.000Z	38 \| good	6.844 \| good	30.065 \| good	14.747 \| good	0.951 \| good	4.206 \| good	0.157 \| good
2025-12-11T13:00:00.000Z	44 \| good	7.615 \| good	33.955 \| good	13.222 \| good	1.077 \| good	4.911 \| good	0.166 \| good
2025-12-11T14:00:00.000Z	49 \| good	8.98 \| good	39.24 \| good	13.817 \| good	1.203 \| good	5.615 \| good	0.174 \| good
2025-12-11T15:00:00.000Z	38 \| good	7.415 \| good	32.198 \| good	17.429 \| good	1.329 \| good	6.32 \| good	0.183 \| good
2025-12-11T16:00:00.000Z	33 \| good	5.971 \| good	26.944 \| good	21.831 \| good	1.44 \| good	5.951 \| good	0.184 \| good
2025-12-11T17:00:00.000Z	27 \| good	4.77 \| good	20.978 \| good	25.19 \| good	1.552 \| good	5.582 \| good	0.185 \| good
2025-12-11T18:00:00.000Z	27 \| good	4.64 \| good	20.054 \| good	26.174 \| good	1.663 \| good	5.213 \| good	0.186 \| good
2025-12-11T19:00:00.000Z	26 \| good	3.858 \| good	16.986 \| good	28.081 \| good	1.709 \| good	5.78 \| good	0.186 \| good
2025-12-11T20:00:00.000Z	27 \| good	3.494 \| good	15.076 \| good	28.919 \| good	1.754 \| good	6.346 \| good	0.186 \| good
2025-12-11T21:00:00.000Z	28 \| good	4.081 \| good	18.033 \| good	29.895 \| good	1.799 \| good	6.913 \| good	0.186 \| good
2025-12-11T22:00:00.000Z	24 \| good	3.701 \| good	16.075 \| good	26.479 \| good	1.906 \| good	10.059 \| good	0.207 \| good
2025-12-11T23:00:00.000Z	21 \| good	3.035 \| good	12.11 \| good	23.413 \| good	2.013 \| good	13.205 \| good	0.229 \| good
2025-12-12T00:00:00.000Z	23 \| good	3.361 \| good	14.979 \| good	25.003 \| good	2.12 \| good	16.351 \| good	0.251 \| good
2025-12-12T01:00:00.000Z	25 \| good	3.614 \| good	15.978 \| good	26.654 \| good	2.336 \| good	17.218 \| good	0.265 \| good
2025-12-12T02:00:00.000Z	25 \| good	3.758 \| good	16.083 \| good	27.119 \| good	2.553 \| good	18.085 \| good	0.28 \| good
2025-12-12T03:00:00.000Z	23 \| good	3.871 \| good	17.033 \| good	25.495 \| good	2.77 \| good	18.952 \| good	0.295 \| good
2025-12-12T04:00:00.000Z	27 \| good	4.666 \| good	20.045 \| good	25.744 \| good	2.76 \| good	18.393 \| good	0.294 \| good
2025-12-12T05:00:00.000Z	33 \| good	5.904 \| good	26.862 \| good	22.351 \| good	2.75 \| good	17.834 \| good	0.292 \| good

Real-time air quality index in Merrillville, Indiana today

Common air pollutants in Merrillville, Indiana

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Merrillville, Indiana air quality forecast and history

Empower business decisions with accurate air quality data

Merrillville, Indiana air quality map: Real-time AQI near you

Air quality in nearby cities

Crown Point, Indiana

Hobart, Indiana

Griffith, Indiana

Schererville, Indiana

St. John, Indiana

Highland Town, Indiana

How accurate is Indiana, USA air quality data?

Air quality levels in US

Frequently asked questions

How frequently is the air quality data for Merrillville, Indiana updated?

When did Merrillville, Indiana experience the worst air quality in the last 24 hours?

When did Merrillville, Indiana have its best air quality in the last 24 hours?

What is the real-time air quality index for Merrillville, Indiana?

Which pollutant is found most often in Merrillville, Indiana?

What can I do if the air quality in Merrillville, Indiana is poor?

What are the current PM2.5 levels in Merrillville, Indiana?

What are the current PM10 levels at Merrillville, Indiana?

What are the current carbon monoxide (CO) levels at Merrillville, Indiana?

What are the current sulfur dioxide (SO2) levels at Merrillville, Indiana?

What are the current ozone (O3) levels at Merrillville, Indiana?

What are the current nitrogen dioxide (NO2) levels at Merrillville, Indiana?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What are the current PM_2.5 levels in Merrillville, Indiana?

What are the current PM₁₀ levels at Merrillville, Indiana?

What are the current sulfur dioxide (SO₂) levels at Merrillville, Indiana?

What are the current ozone (O₃) levels at Merrillville, Indiana?

What are the current nitrogen dioxide (NO₂) levels at Merrillville, Indiana?