What are the current PM10 levels at Merrillville, Indiana?

The current PM10 levels in Merrillville, Indiana are 106.352 μg/m3.

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

The current sulfur dioxide (SO2) levels in Merrillville, Indiana are 0.624 ppb.

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

The current ozone (O3) levels at Merrillville, Indiana is 53.094 ppm.

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

The current nitrogen dioxide (NO2) levels at Merrillville, Indiana is 2.367 ppb.

Real-time air quality index in Merrillville, Indiana today

Name: Live air pollution levels in Merrillville, Indiana today
Creator: Ambee

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)

Moderate

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)

14.26 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

63.19 μg/m³

155

255

425

605+

Ozone (O₃)

31.01 ppb

201

201+

Sulfur Dioxide (SO₂)

0.32 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.16 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.24 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
2025-07-22T03:00:00.000Z	44 \| good	8.457 \| good	37.087 \| good	22.831 \| good	0.944 \| good	7.152 \| good	0.283 \| good
2025-07-22T04:00:00.000Z	73 \| moderate	21.107 \| fine	39.507 \| good	34.378 \| good	0.34 \| good	7.016 \| good	0.215 \| good
2025-07-22T05:00:00.000Z	94 \| moderate	32.034 \| fine	94.412 \| fine	31.952 \| good	0.457 \| good	9.073 \| good	0.215 \| good
2025-07-22T06:00:00.000Z	94 \| moderate	32.228 \| fine	140.632 \| fine	27.317 \| good	0.959 \| good	14.753 \| good	0.191 \| good
2025-07-22T07:00:00.000Z	94 \| moderate	31.675 \| fine	94.817 \| fine	25.651 \| good	0.787 \| good	13.563 \| good	0.191 \| good
2025-07-22T08:00:00.000Z	82 \| moderate	26.067 \| fine	114.036 \| fine	16.398 \| good	0.505 \| good	20.097 \| good	0.191 \| good
2025-07-22T09:00:00.000Z	82 \| moderate	25.952 \| fine	89.226 \| fine	14.852 \| good	0.318 \| good	18.067 \| good	0.173 \| good
2025-07-22T10:00:00.000Z	86 \| moderate	28.138 \| fine	117.087 \| fine	24.155 \| good	0.421 \| good	14.697 \| good	0.191 \| good
2025-07-22T11:00:00.000Z	88 \| moderate	29.316 \| fine	118.358 \| fine	17.287 \| good	0.586 \| good	11.067 \| good	0.255 \| good
2025-07-22T12:00:00.000Z	79 \| moderate	24.398 \| fine	85.807 \| fine	18.199 \| good	0.601 \| good	8.238 \| good	0.273 \| good
2025-07-22T13:00:00.000Z	75 \| moderate	22.206 \| fine	86.251 \| fine	20.765 \| good	0.318 \| good	6.494 \| good	0.255 \| good
2025-07-22T14:00:00.000Z	73 \| moderate	20.791 \| fine	88.575 \| fine	26.025 \| good	0.529 \| good	3.871 \| good	0.221 \| good
2025-07-22T15:00:00.000Z	69 \| moderate	19.224 \| fine	69.688 \| fine	27.157 \| good	0.588 \| good	3.896 \| good	0.247 \| good
2025-07-22T16:00:00.000Z	67 \| moderate	18.196 \| fine	67.276 \| fine	34.976 \| good	1.218 \| good	2.194 \| good	0.261 \| good
2025-07-22T17:00:00.000Z	79 \| moderate	24.285 \| fine	72.541 \| fine	39.415 \| good	1.028 \| good	1.694 \| good	0.261 \| good
2025-07-22T18:00:00.000Z	82 \| moderate	26.159 \| fine	106.171 \| fine	44.047 \| good	0.929 \| good	1.486 \| good	0.261 \| good
2025-07-22T19:00:00.000Z	82 \| moderate	25.794 \| fine	102.487 \| fine	43.755 \| good	0.8 \| good	1.733 \| good	0.239 \| good
2025-07-22T20:00:00.000Z	81 \| moderate	24.61 \| fine	102.415 \| fine	49.247 \| good	0.61 \| good	1.555 \| good	0.215 \| good
2025-07-22T21:00:00.000Z	85 \| moderate	27.298 \| fine	123.812 \| fine	50.627 \| good	0.473 \| good	2.299 \| good	0.215 \| good
2025-07-22T22:00:00.000Z	81 \| moderate	25.053 \| fine	102.322 \| fine	49.903 \| good	0.643 \| good	2.614 \| good	0.214 \| good
2025-07-22T23:00:00.000Z	81 \| moderate	24.577 \| fine	106.352 \| fine	53.094 \| good	0.624 \| good	2.367 \| good	0.197 \| good
2025-07-23T00:00:00.000Z	71 \| moderate	20.376 \| fine	88.619 \| fine	52.259 \| good	0.939 \| good	2.101 \| good	0.232 \| good
2025-07-23T01:00:00.000Z	67 \| moderate	18.407 \| fine	79.578 \| fine	50.69 \| good	0.682 \| good	2.744 \| good	0.215 \| good
2025-07-23T02:00:00.000Z	67 \| moderate	18.339 \| fine	82.805 \| fine	50.259 \| good	0.598 \| good	7.705 \| good	0.215 \| good
2025-07-23T03:00:00.000Z	60 \| moderate	13.932 \| fine	62.614 \| fine	41.238 \| good	0.494 \| good	8.618 \| good	0.251 \| good
2025-07-23T04:00:00.000Z	58 \| moderate	12.962 \| fine	56.804 \| fine	39.339 \| good	0.508 \| good	8.376 \| good	0.251 \| good
2025-07-23T05:00:00.000Z	62 \| moderate	14.555 \| fine	75.408 \| fine	35.228 \| good	0.493 \| good	5.889 \| good	0.232 \| good
2025-07-23T06:00:00.000Z	64 \| moderate	16.134 \| fine	70.325 \| fine	30.871 \| good	0.943 \| good	10.899 \| good	0.237 \| good
2025-07-23T07:00:00.000Z	62 \| moderate	14.976 \| fine	67.156 \| fine	34.913 \| good	3.628 \| good	6.481 \| good	0.2 \| good
2025-07-23T08:00:00.000Z	62 \| moderate	14.631 \| fine	66.818 \| fine	32.76 \| good	5.199 \| good	5.594 \| good	0.224 \| good
2025-07-23T09:00:00.000Z	60 \| moderate	13.828 \| fine	62.736 \| fine	31.885 \| good	2.478 \| good	4.584 \| good	0.224 \| good
2025-07-23T10:00:00.000Z	58 \| moderate	13.312 \| fine	62.128 \| fine	35.077 \| good	3.347 \| good	6.49 \| good	0.224 \| good
2025-07-23T11:00:00.000Z	58 \| moderate	12.602 \| fine	56.529 \| fine	36.32 \| good	1.915 \| good	5.62 \| good	0.261 \| good
2025-07-23T12:00:00.000Z	58 \| moderate	12.649 \| fine	55.436 \| fine	37.21 \| good	1.562 \| good	8.209 \| good	0.254 \| good
2025-07-23T13:00:00.000Z	58 \| moderate	13.101 \| fine	53.594 \| good	36.27 \| good	2.69 \| good	9.569 \| good	0.279 \| good
2025-07-23T14:00:00.000Z	58 \| moderate	11.529 \| good	68.673 \| fine	33.266 \| good	0.643 \| good	9.025 \| good	0.261 \| good
2025-07-23T15:00:00.000Z	58 \| moderate	13.049 \| fine	68.662 \| fine	38.627 \| good	0.639 \| good	8.073 \| good	0.261 \| good
2025-07-23T16:00:00.000Z	59 \| moderate	13.431 \| fine	70.628 \| fine	39.752 \| good	1.063 \| good	6.143 \| good	0.239 \| good
2025-07-23T17:00:00.000Z	66 \| moderate	17.458 \| fine	81.401 \| fine	42.549 \| good	0.7 \| good	5.71 \| good	0.232 \| good
2025-07-23T18:00:00.000Z	62 \| moderate	15.415 \| fine	66.797 \| fine	44.738 \| good	0.515 \| good	3.456 \| good	0.239 \| good
2025-07-23T19:00:00.000Z	64 \| moderate	15.688 \| fine	61.976 \| fine	46.086 \| good	0.418 \| good	2.671 \| good	0.221 \| good
2025-07-23T20:00:00.000Z	64 \| moderate	15.746 \| fine	66.403 \| fine	48.501 \| good	0.36 \| good	2.867 \| good	0.221 \| good
2025-07-23T21:00:00.000Z	64 \| moderate	15.248 \| fine	81.612 \| fine	47.78 \| good	0.373 \| good	2.568 \| good	0.221 \| good
2025-07-23T22:00:00.000Z	66 \| moderate	16.989 \| fine	72.98 \| fine	43.332 \| good	0.446 \| good	4.474 \| good	0.221 \| good
2025-07-23T23:00:00.000Z	62 \| moderate	14.6 \| fine	64.569 \| fine	39.519 \| good	0.379 \| good	3.597 \| good	0.197 \| good
2025-07-24T00:00:00.000Z	62 \| moderate	14.819 \| fine	78.304 \| fine	38.917 \| good	0.341 \| good	3.353 \| good	0.221 \| good
2025-07-24T01:00:00.000Z	60 \| moderate	13.574 \| fine	64.908 \| fine	35.112 \| good	0.327 \| good	3.602 \| good	0.221 \| good
2025-07-24T02:00:00.000Z	60 \| moderate	14.262 \| fine	63.192 \| fine	31.008 \| good	0.32 \| good	6.155 \| good	0.239 \| good
2025-07-24T02:00:00.000Z	60 \| moderate	14.262 \| fine	63.192 \| fine	31.008 \| good	0.32 \| good	6.155 \| good	0.239 \| good
2025-07-23T01:00:00.000Z	49 \| good	8.618 \| good	37.976 \| good	36.353 \| good	1.344 \| good	4.833 \| good	0.245 \| good
2025-07-23T02:00:00.000Z	49 \| good	8.763 \| good	38.134 \| good	30.555 \| good	1.379 \| good	5.816 \| good	0.253 \| good
2025-07-23T03:00:00.000Z	49 \| good	9.274 \| good	41.079 \| good	26.089 \| good	1.414 \| good	6.798 \| good	0.26 \| good
2025-07-23T04:00:00.000Z	54 \| moderate	11.407 \| good	50.079 \| good	23.268 \| good	1.333 \| good	6.534 \| good	0.258 \| good
2025-07-23T05:00:00.000Z	58 \| moderate	12.798 \| fine	57.156 \| fine	21.774 \| good	1.253 \| good	6.27 \| good	0.257 \| good
2025-07-23T06:00:00.000Z	60 \| moderate	13.952 \| fine	62.982 \| fine	18.266 \| good	1.172 \| good	6.006 \| good	0.255 \| good
2025-07-23T07:00:00.000Z	58 \| moderate	13.172 \| fine	59.139 \| fine	19.97 \| good	1.189 \| good	6.124 \| good	0.257 \| good
2025-07-23T08:00:00.000Z	54 \| moderate	11.07 \| good	49.005 \| good	19.15 \| good	1.206 \| good	6.241 \| good	0.26 \| good
2025-07-23T09:00:00.000Z	56 \| moderate	12.225 \| fine	55.034 \| fine	20.079 \| good	1.222 \| good	6.359 \| good	0.262 \| good
2025-07-23T10:00:00.000Z	58 \| moderate	12.966 \| fine	58.93 \| fine	17.705 \| good	1.357 \| good	6.641 \| good	0.271 \| good
2025-07-23T11:00:00.000Z	60 \| moderate	13.953 \| fine	62.992 \| fine	21.786 \| good	1.492 \| good	6.923 \| good	0.28 \| good
2025-07-23T12:00:00.000Z	56 \| moderate	11.726 \| good	52.037 \| good	28.805 \| good	1.626 \| good	7.205 \| good	0.289 \| good
2025-07-23T13:00:00.000Z	54 \| moderate	11.208 \| good	49.949 \| good	34.155 \| good	2.51 \| good	6.286 \| good	0.294 \| good
2025-07-23T14:00:00.000Z	58 \| moderate	12.567 \| fine	57.018 \| fine	41.12 \| good	3.394 \| good	5.367 \| good	0.299 \| good
2025-07-23T15:00:00.000Z	60 \| moderate	13.506 \| fine	61.055 \| fine	44.459 \| good	4.278 \| good	4.448 \| good	0.304 \| good
2025-07-23T16:00:00.000Z	58 \| moderate	13.301 \| fine	59.115 \| fine	49.485 \| good	4.533 \| good	3.487 \| good	0.281 \| good
2025-07-23T17:00:00.000Z	60 \| moderate	14.253 \| fine	63.156 \| fine	53.788 \| good	4.787 \| good	2.526 \| good	0.259 \| good
2025-07-23T18:00:00.000Z	64 \| moderate	15.676 \| fine	69.227 \| fine	54.997 \| good	5.041 \| good	1.565 \| good	0.236 \| good
2025-07-23T19:00:00.000Z	62 \| moderate	15.314 \| fine	69.038 \| fine	55.913 \| fine	4.353 \| good	1.546 \| good	0.225 \| good
2025-07-23T20:00:00.000Z	64 \| moderate	15.659 \| fine	69.172 \| fine	57.083 \| fine	3.664 \| good	1.527 \| good	0.213 \| good
2025-07-23T21:00:00.000Z	64 \| moderate	16.189 \| fine	71.186 \| fine	55.983 \| fine	2.976 \| good	1.508 \| good	0.201 \| good
2025-07-23T22:00:00.000Z	66 \| moderate	17.174 \| fine	76.914 \| fine	54.881 \| good	2.682 \| good	2.453 \| good	0.207 \| good
2025-07-23T23:00:00.000Z	67 \| moderate	18.028 \| fine	79.132 \| fine	53.609 \| good	2.388 \| good	3.398 \| good	0.212 \| good
2025-07-24T00:00:00.000Z	62 \| moderate	14.977 \| fine	66.976 \| fine	51.665 \| good	2.095 \| good	4.343 \| good	0.217 \| good
2025-07-24T01:00:00.000Z	56 \| moderate	11.533 \| good	51.027 \| good	38.676 \| good	2.059 \| good	4.892 \| good	0.221 \| good
2025-07-24T02:00:00.000Z	58 \| moderate	12.605 \| fine	57.032 \| fine	33.509 \| good	2.024 \| good	5.44 \| good	0.225 \| good
2025-07-24T03:00:00.000Z	60 \| moderate	13.832 \| fine	62.954 \| fine	32.802 \| good	1.989 \| good	5.989 \| good	0.229 \| good
2025-07-24T04:00:00.000Z	64 \| moderate	16.078 \| fine	71.116 \| fine	31.112 \| good	2.018 \| good	6.063 \| good	0.231 \| good
2025-07-24T05:00:00.000Z	66 \| moderate	17.379 \| fine	77.037 \| fine	28.383 \| good	2.047 \| good	6.138 \| good	0.233 \| good
2025-07-24T06:00:00.000Z	67 \| moderate	17.628 \| fine	78.935 \| fine	24.198 \| good	2.075 \| good	6.212 \| good	0.236 \| good
2025-07-24T07:00:00.000Z	67 \| moderate	17.628 \| fine	78.933 \| fine	25.728 \| good	2.426 \| good	6.014 \| good	0.235 \| good
2025-07-24T08:00:00.000Z	64 \| moderate	16.014 \| fine	71.064 \| fine	25.419 \| good	2.776 \| good	5.815 \| good	0.235 \| good
2025-07-24T09:00:00.000Z	64 \| moderate	16.34 \| fine	72.86 \| fine	24.814 \| good	3.126 \| good	5.617 \| good	0.235 \| good
2025-07-24T10:00:00.000Z	67 \| moderate	18.191 \| fine	81 \| fine	19.607 \| good	3.575 \| good	5.625 \| good	0.238 \| good
2025-07-24T11:00:00.000Z	67 \| moderate	17.884 \| fine	79 \| fine	24.366 \| good	4.024 \| good	5.633 \| good	0.241 \| good
2025-07-24T12:00:00.000Z	66 \| moderate	17.413 \| fine	77.035 \| fine	28.382 \| good	4.473 \| good	5.641 \| good	0.244 \| good
2025-07-24T13:00:00.000Z	64 \| moderate	16.185 \| fine	71.156 \| fine	30.71 \| good	4.908 \| good	4.904 \| good	0.246 \| good
2025-07-24T14:00:00.000Z	62 \| moderate	15.151 \| fine	67.154 \| fine	37.786 \| good	5.343 \| good	4.167 \| good	0.248 \| good
2025-07-24T15:00:00.000Z	58 \| moderate	13.326 \| fine	60.923 \| fine	43.669 \| good	5.778 \| good	3.43 \| good	0.25 \| good
2025-07-24T16:00:00.000Z	56 \| moderate	12.321 \| fine	55.137 \| fine	46.598 \| good	4.592 \| good	2.759 \| good	0.231 \| good
2025-07-24T17:00:00.000Z	56 \| moderate	11.808 \| good	52.113 \| good	49.619 \| good	3.405 \| good	2.087 \| good	0.212 \| good
2025-07-24T18:00:00.000Z	58 \| moderate	12.701 \| fine	57.14 \| fine	52.392 \| good	2.218 \| good	1.415 \| good	0.193 \| good
2025-07-24T19:00:00.000Z	56 \| moderate	12.06 \| good	54.118 \| good	52.941 \| good	1.892 \| good	1.415 \| good	0.186 \| good
2025-07-24T20:00:00.000Z	56 \| moderate	11.762 \| good	52.161 \| good	52.826 \| good	1.565 \| good	1.414 \| good	0.18 \| good
2025-07-24T21:00:00.000Z	58 \| moderate	12.926 \| fine	59.055 \| fine	52.466 \| good	1.239 \| good	1.414 \| good	0.173 \| good
2025-07-24T22:00:00.000Z	56 \| moderate	11.726 \| good	52.106 \| good	54.156 \| good	1.148 \| good	2.002 \| good	0.178 \| good
2025-07-24T23:00:00.000Z	56 \| moderate	11.577 \| good	51.084 \| good	55.498 \| fine	1.058 \| good	2.591 \| good	0.182 \| good
2025-07-25T00:00:00.000Z	87 \| moderate	6.462 \| good	7.651 \| good	66.207 \| fine	0.971 \| good	3.196 \| good	0.188 \| good

Merrillville

Empower business decisions with accurate air quality data

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

0.49ppm

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 07:00:00 on 2025-07-22.

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

The best air quality in Merrillville, Indiana was recorded at 03:00:00 on 2025-07-22.

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

The real-time air quality index in Merrillville, Indiana is 81, currently categorized as Moderate.

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 24.577 μg/m³.

What are the current PM₁₀ levels at Merrillville, Indiana?

The current PM₁₀ levels in Merrillville, Indiana are 106.352 μg/m³.

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

The current carbon monoxide (CO) level in Merrillville, Indiana is 0.197 ppm.

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

The current sulfur dioxide (SO₂) levels in Merrillville, Indiana are 0.624 ppb.

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

The current ozone (O₃) levels at Merrillville, Indiana is 53.094 ppm.

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

The current nitrogen dioxide (NO₂) levels at Merrillville, Indiana is 2.367 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-22T03:00:00.000Z	44 \| good	8.457 \| good	37.087 \| good	22.831 \| good	0.944 \| good	7.152 \| good	0.283 \| good
2025-07-22T04:00:00.000Z	73 \| moderate	21.107 \| fine	39.507 \| good	34.378 \| good	0.34 \| good	7.016 \| good	0.215 \| good
2025-07-22T05:00:00.000Z	94 \| moderate	32.034 \| fine	94.412 \| fine	31.952 \| good	0.457 \| good	9.073 \| good	0.215 \| good
2025-07-22T06:00:00.000Z	94 \| moderate	32.228 \| fine	140.632 \| fine	27.317 \| good	0.959 \| good	14.753 \| good	0.191 \| good
2025-07-22T07:00:00.000Z	94 \| moderate	31.675 \| fine	94.817 \| fine	25.651 \| good	0.787 \| good	13.563 \| good	0.191 \| good
2025-07-22T08:00:00.000Z	82 \| moderate	26.067 \| fine	114.036 \| fine	16.398 \| good	0.505 \| good	20.097 \| good	0.191 \| good
2025-07-22T09:00:00.000Z	82 \| moderate	25.952 \| fine	89.226 \| fine	14.852 \| good	0.318 \| good	18.067 \| good	0.173 \| good
2025-07-22T10:00:00.000Z	86 \| moderate	28.138 \| fine	117.087 \| fine	24.155 \| good	0.421 \| good	14.697 \| good	0.191 \| good
2025-07-22T11:00:00.000Z	88 \| moderate	29.316 \| fine	118.358 \| fine	17.287 \| good	0.586 \| good	11.067 \| good	0.255 \| good
2025-07-22T12:00:00.000Z	79 \| moderate	24.398 \| fine	85.807 \| fine	18.199 \| good	0.601 \| good	8.238 \| good	0.273 \| good
2025-07-22T13:00:00.000Z	75 \| moderate	22.206 \| fine	86.251 \| fine	20.765 \| good	0.318 \| good	6.494 \| good	0.255 \| good
2025-07-22T14:00:00.000Z	73 \| moderate	20.791 \| fine	88.575 \| fine	26.025 \| good	0.529 \| good	3.871 \| good	0.221 \| good
2025-07-22T15:00:00.000Z	69 \| moderate	19.224 \| fine	69.688 \| fine	27.157 \| good	0.588 \| good	3.896 \| good	0.247 \| good
2025-07-22T16:00:00.000Z	67 \| moderate	18.196 \| fine	67.276 \| fine	34.976 \| good	1.218 \| good	2.194 \| good	0.261 \| good
2025-07-22T17:00:00.000Z	79 \| moderate	24.285 \| fine	72.541 \| fine	39.415 \| good	1.028 \| good	1.694 \| good	0.261 \| good
2025-07-22T18:00:00.000Z	82 \| moderate	26.159 \| fine	106.171 \| fine	44.047 \| good	0.929 \| good	1.486 \| good	0.261 \| good
2025-07-22T19:00:00.000Z	82 \| moderate	25.794 \| fine	102.487 \| fine	43.755 \| good	0.8 \| good	1.733 \| good	0.239 \| good
2025-07-22T20:00:00.000Z	81 \| moderate	24.61 \| fine	102.415 \| fine	49.247 \| good	0.61 \| good	1.555 \| good	0.215 \| good
2025-07-22T21:00:00.000Z	85 \| moderate	27.298 \| fine	123.812 \| fine	50.627 \| good	0.473 \| good	2.299 \| good	0.215 \| good
2025-07-22T22:00:00.000Z	81 \| moderate	25.053 \| fine	102.322 \| fine	49.903 \| good	0.643 \| good	2.614 \| good	0.214 \| good
2025-07-22T23:00:00.000Z	81 \| moderate	24.577 \| fine	106.352 \| fine	53.094 \| good	0.624 \| good	2.367 \| good	0.197 \| good
2025-07-23T00:00:00.000Z	71 \| moderate	20.376 \| fine	88.619 \| fine	52.259 \| good	0.939 \| good	2.101 \| good	0.232 \| good
2025-07-23T01:00:00.000Z	67 \| moderate	18.407 \| fine	79.578 \| fine	50.69 \| good	0.682 \| good	2.744 \| good	0.215 \| good
2025-07-23T02:00:00.000Z	67 \| moderate	18.339 \| fine	82.805 \| fine	50.259 \| good	0.598 \| good	7.705 \| good	0.215 \| good
2025-07-23T03:00:00.000Z	60 \| moderate	13.932 \| fine	62.614 \| fine	41.238 \| good	0.494 \| good	8.618 \| good	0.251 \| good
2025-07-23T04:00:00.000Z	58 \| moderate	12.962 \| fine	56.804 \| fine	39.339 \| good	0.508 \| good	8.376 \| good	0.251 \| good
2025-07-23T05:00:00.000Z	62 \| moderate	14.555 \| fine	75.408 \| fine	35.228 \| good	0.493 \| good	5.889 \| good	0.232 \| good
2025-07-23T06:00:00.000Z	64 \| moderate	16.134 \| fine	70.325 \| fine	30.871 \| good	0.943 \| good	10.899 \| good	0.237 \| good
2025-07-23T07:00:00.000Z	62 \| moderate	14.976 \| fine	67.156 \| fine	34.913 \| good	3.628 \| good	6.481 \| good	0.2 \| good
2025-07-23T08:00:00.000Z	62 \| moderate	14.631 \| fine	66.818 \| fine	32.76 \| good	5.199 \| good	5.594 \| good	0.224 \| good
2025-07-23T09:00:00.000Z	60 \| moderate	13.828 \| fine	62.736 \| fine	31.885 \| good	2.478 \| good	4.584 \| good	0.224 \| good
2025-07-23T10:00:00.000Z	58 \| moderate	13.312 \| fine	62.128 \| fine	35.077 \| good	3.347 \| good	6.49 \| good	0.224 \| good
2025-07-23T11:00:00.000Z	58 \| moderate	12.602 \| fine	56.529 \| fine	36.32 \| good	1.915 \| good	5.62 \| good	0.261 \| good
2025-07-23T12:00:00.000Z	58 \| moderate	12.649 \| fine	55.436 \| fine	37.21 \| good	1.562 \| good	8.209 \| good	0.254 \| good
2025-07-23T13:00:00.000Z	58 \| moderate	13.101 \| fine	53.594 \| good	36.27 \| good	2.69 \| good	9.569 \| good	0.279 \| good
2025-07-23T14:00:00.000Z	58 \| moderate	11.529 \| good	68.673 \| fine	33.266 \| good	0.643 \| good	9.025 \| good	0.261 \| good
2025-07-23T15:00:00.000Z	58 \| moderate	13.049 \| fine	68.662 \| fine	38.627 \| good	0.639 \| good	8.073 \| good	0.261 \| good
2025-07-23T16:00:00.000Z	59 \| moderate	13.431 \| fine	70.628 \| fine	39.752 \| good	1.063 \| good	6.143 \| good	0.239 \| good
2025-07-23T17:00:00.000Z	66 \| moderate	17.458 \| fine	81.401 \| fine	42.549 \| good	0.7 \| good	5.71 \| good	0.232 \| good
2025-07-23T18:00:00.000Z	62 \| moderate	15.415 \| fine	66.797 \| fine	44.738 \| good	0.515 \| good	3.456 \| good	0.239 \| good
2025-07-23T19:00:00.000Z	64 \| moderate	15.688 \| fine	61.976 \| fine	46.086 \| good	0.418 \| good	2.671 \| good	0.221 \| good
2025-07-23T20:00:00.000Z	64 \| moderate	15.746 \| fine	66.403 \| fine	48.501 \| good	0.36 \| good	2.867 \| good	0.221 \| good
2025-07-23T21:00:00.000Z	64 \| moderate	15.248 \| fine	81.612 \| fine	47.78 \| good	0.373 \| good	2.568 \| good	0.221 \| good
2025-07-23T22:00:00.000Z	66 \| moderate	16.989 \| fine	72.98 \| fine	43.332 \| good	0.446 \| good	4.474 \| good	0.221 \| good
2025-07-23T23:00:00.000Z	62 \| moderate	14.6 \| fine	64.569 \| fine	39.519 \| good	0.379 \| good	3.597 \| good	0.197 \| good
2025-07-24T00:00:00.000Z	62 \| moderate	14.819 \| fine	78.304 \| fine	38.917 \| good	0.341 \| good	3.353 \| good	0.221 \| good
2025-07-24T01:00:00.000Z	60 \| moderate	13.574 \| fine	64.908 \| fine	35.112 \| good	0.327 \| good	3.602 \| good	0.221 \| good
2025-07-24T02:00:00.000Z	60 \| moderate	14.262 \| fine	63.192 \| fine	31.008 \| good	0.32 \| good	6.155 \| good	0.239 \| good
2025-07-24T02:00:00.000Z	60 \| moderate	14.262 \| fine	63.192 \| fine	31.008 \| good	0.32 \| good	6.155 \| good	0.239 \| good
2025-07-23T01:00:00.000Z	49 \| good	8.618 \| good	37.976 \| good	36.353 \| good	1.344 \| good	4.833 \| good	0.245 \| good
2025-07-23T02:00:00.000Z	49 \| good	8.763 \| good	38.134 \| good	30.555 \| good	1.379 \| good	5.816 \| good	0.253 \| good
2025-07-23T03:00:00.000Z	49 \| good	9.274 \| good	41.079 \| good	26.089 \| good	1.414 \| good	6.798 \| good	0.26 \| good
2025-07-23T04:00:00.000Z	54 \| moderate	11.407 \| good	50.079 \| good	23.268 \| good	1.333 \| good	6.534 \| good	0.258 \| good
2025-07-23T05:00:00.000Z	58 \| moderate	12.798 \| fine	57.156 \| fine	21.774 \| good	1.253 \| good	6.27 \| good	0.257 \| good
2025-07-23T06:00:00.000Z	60 \| moderate	13.952 \| fine	62.982 \| fine	18.266 \| good	1.172 \| good	6.006 \| good	0.255 \| good
2025-07-23T07:00:00.000Z	58 \| moderate	13.172 \| fine	59.139 \| fine	19.97 \| good	1.189 \| good	6.124 \| good	0.257 \| good
2025-07-23T08:00:00.000Z	54 \| moderate	11.07 \| good	49.005 \| good	19.15 \| good	1.206 \| good	6.241 \| good	0.26 \| good
2025-07-23T09:00:00.000Z	56 \| moderate	12.225 \| fine	55.034 \| fine	20.079 \| good	1.222 \| good	6.359 \| good	0.262 \| good
2025-07-23T10:00:00.000Z	58 \| moderate	12.966 \| fine	58.93 \| fine	17.705 \| good	1.357 \| good	6.641 \| good	0.271 \| good
2025-07-23T11:00:00.000Z	60 \| moderate	13.953 \| fine	62.992 \| fine	21.786 \| good	1.492 \| good	6.923 \| good	0.28 \| good
2025-07-23T12:00:00.000Z	56 \| moderate	11.726 \| good	52.037 \| good	28.805 \| good	1.626 \| good	7.205 \| good	0.289 \| good
2025-07-23T13:00:00.000Z	54 \| moderate	11.208 \| good	49.949 \| good	34.155 \| good	2.51 \| good	6.286 \| good	0.294 \| good
2025-07-23T14:00:00.000Z	58 \| moderate	12.567 \| fine	57.018 \| fine	41.12 \| good	3.394 \| good	5.367 \| good	0.299 \| good
2025-07-23T15:00:00.000Z	60 \| moderate	13.506 \| fine	61.055 \| fine	44.459 \| good	4.278 \| good	4.448 \| good	0.304 \| good
2025-07-23T16:00:00.000Z	58 \| moderate	13.301 \| fine	59.115 \| fine	49.485 \| good	4.533 \| good	3.487 \| good	0.281 \| good
2025-07-23T17:00:00.000Z	60 \| moderate	14.253 \| fine	63.156 \| fine	53.788 \| good	4.787 \| good	2.526 \| good	0.259 \| good
2025-07-23T18:00:00.000Z	64 \| moderate	15.676 \| fine	69.227 \| fine	54.997 \| good	5.041 \| good	1.565 \| good	0.236 \| good
2025-07-23T19:00:00.000Z	62 \| moderate	15.314 \| fine	69.038 \| fine	55.913 \| fine	4.353 \| good	1.546 \| good	0.225 \| good
2025-07-23T20:00:00.000Z	64 \| moderate	15.659 \| fine	69.172 \| fine	57.083 \| fine	3.664 \| good	1.527 \| good	0.213 \| good
2025-07-23T21:00:00.000Z	64 \| moderate	16.189 \| fine	71.186 \| fine	55.983 \| fine	2.976 \| good	1.508 \| good	0.201 \| good
2025-07-23T22:00:00.000Z	66 \| moderate	17.174 \| fine	76.914 \| fine	54.881 \| good	2.682 \| good	2.453 \| good	0.207 \| good
2025-07-23T23:00:00.000Z	67 \| moderate	18.028 \| fine	79.132 \| fine	53.609 \| good	2.388 \| good	3.398 \| good	0.212 \| good
2025-07-24T00:00:00.000Z	62 \| moderate	14.977 \| fine	66.976 \| fine	51.665 \| good	2.095 \| good	4.343 \| good	0.217 \| good
2025-07-24T01:00:00.000Z	56 \| moderate	11.533 \| good	51.027 \| good	38.676 \| good	2.059 \| good	4.892 \| good	0.221 \| good
2025-07-24T02:00:00.000Z	58 \| moderate	12.605 \| fine	57.032 \| fine	33.509 \| good	2.024 \| good	5.44 \| good	0.225 \| good
2025-07-24T03:00:00.000Z	60 \| moderate	13.832 \| fine	62.954 \| fine	32.802 \| good	1.989 \| good	5.989 \| good	0.229 \| good
2025-07-24T04:00:00.000Z	64 \| moderate	16.078 \| fine	71.116 \| fine	31.112 \| good	2.018 \| good	6.063 \| good	0.231 \| good
2025-07-24T05:00:00.000Z	66 \| moderate	17.379 \| fine	77.037 \| fine	28.383 \| good	2.047 \| good	6.138 \| good	0.233 \| good
2025-07-24T06:00:00.000Z	67 \| moderate	17.628 \| fine	78.935 \| fine	24.198 \| good	2.075 \| good	6.212 \| good	0.236 \| good
2025-07-24T07:00:00.000Z	67 \| moderate	17.628 \| fine	78.933 \| fine	25.728 \| good	2.426 \| good	6.014 \| good	0.235 \| good
2025-07-24T08:00:00.000Z	64 \| moderate	16.014 \| fine	71.064 \| fine	25.419 \| good	2.776 \| good	5.815 \| good	0.235 \| good
2025-07-24T09:00:00.000Z	64 \| moderate	16.34 \| fine	72.86 \| fine	24.814 \| good	3.126 \| good	5.617 \| good	0.235 \| good
2025-07-24T10:00:00.000Z	67 \| moderate	18.191 \| fine	81 \| fine	19.607 \| good	3.575 \| good	5.625 \| good	0.238 \| good
2025-07-24T11:00:00.000Z	67 \| moderate	17.884 \| fine	79 \| fine	24.366 \| good	4.024 \| good	5.633 \| good	0.241 \| good
2025-07-24T12:00:00.000Z	66 \| moderate	17.413 \| fine	77.035 \| fine	28.382 \| good	4.473 \| good	5.641 \| good	0.244 \| good
2025-07-24T13:00:00.000Z	64 \| moderate	16.185 \| fine	71.156 \| fine	30.71 \| good	4.908 \| good	4.904 \| good	0.246 \| good
2025-07-24T14:00:00.000Z	62 \| moderate	15.151 \| fine	67.154 \| fine	37.786 \| good	5.343 \| good	4.167 \| good	0.248 \| good
2025-07-24T15:00:00.000Z	58 \| moderate	13.326 \| fine	60.923 \| fine	43.669 \| good	5.778 \| good	3.43 \| good	0.25 \| good
2025-07-24T16:00:00.000Z	56 \| moderate	12.321 \| fine	55.137 \| fine	46.598 \| good	4.592 \| good	2.759 \| good	0.231 \| good
2025-07-24T17:00:00.000Z	56 \| moderate	11.808 \| good	52.113 \| good	49.619 \| good	3.405 \| good	2.087 \| good	0.212 \| good
2025-07-24T18:00:00.000Z	58 \| moderate	12.701 \| fine	57.14 \| fine	52.392 \| good	2.218 \| good	1.415 \| good	0.193 \| good
2025-07-24T19:00:00.000Z	56 \| moderate	12.06 \| good	54.118 \| good	52.941 \| good	1.892 \| good	1.415 \| good	0.186 \| good
2025-07-24T20:00:00.000Z	56 \| moderate	11.762 \| good	52.161 \| good	52.826 \| good	1.565 \| good	1.414 \| good	0.18 \| good
2025-07-24T21:00:00.000Z	58 \| moderate	12.926 \| fine	59.055 \| fine	52.466 \| good	1.239 \| good	1.414 \| good	0.173 \| good
2025-07-24T22:00:00.000Z	56 \| moderate	11.726 \| good	52.106 \| good	54.156 \| good	1.148 \| good	2.002 \| good	0.178 \| good
2025-07-24T23:00:00.000Z	56 \| moderate	11.577 \| good	51.084 \| good	55.498 \| fine	1.058 \| good	2.591 \| good	0.182 \| good
2025-07-25T00:00:00.000Z	87 \| moderate	6.462 \| good	7.651 \| good	66.207 \| fine	0.971 \| good	3.196 \| good	0.188 \| 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?