What are the current PM10 levels at St. John, Indiana?

The current PM10 levels in St. John, Indiana are 30.842 μg/m3.

What are the current sulfur dioxide (SO2) levels at St. John, Indiana?

The current sulfur dioxide (SO2) levels in St. John, Indiana are 0.803 ppb.

What are the current ozone (O3) levels at St. John, Indiana?

The current ozone (O3) levels at St. John, Indiana is 26.714 ppm.

What are the current nitrogen dioxide (NO2) levels at St. John, Indiana?

The current nitrogen dioxide (NO2) levels at St. John, Indiana is 2.317 ppb.

Real-time air quality index in St. John, Indiana today

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

The measured PM2.5 levels in St. John, Indiana at present are 6.667 μg/m3.

Stay updated with real-time air quality in St. John, 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

St. John, Indiana

Last updated: ... (Local time)

Common air pollutants in St. John, Indiana

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

6.67 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

30.84 μg/m³

155

255

425

605+

Ozone (O₃)

26.71 ppb

201

201+

Sulfur Dioxide (SO₂)

0.80 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

2.32 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.16 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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St. John, Indiana

Scroll To Air Quality Map

Track live St. John, Indiana air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-03-06T14:00:00.000Z	49 \| good	8.565 \| good	36.75 \| good	8.928 \| good	1.079 \| good	10.609 \| good	0.27 \| good
2026-03-06T15:00:00.000Z	33 \| good	5.795 \| good	29.635 \| good	7.807 \| good	1.221 \| good	9.107 \| good	0.3 \| good
2026-03-06T16:00:00.000Z	44 \| good	7.918 \| good	36.693 \| good	11.843 \| good	0.957 \| good	6.165 \| good	0.35 \| good
2026-03-06T17:00:00.000Z	33 \| good	6.464 \| good	27.695 \| good	9.976 \| good	1.319 \| good	4.538 \| good	0.3 \| good
2026-03-06T18:00:00.000Z	44 \| good	8.107 \| good	35.46 \| good	10.15 \| good	0.971 \| good	4.962 \| good	0.25 \| good
2026-03-06T19:00:00.000Z	44 \| good	7.513 \| good	38.139 \| good	7.456 \| good	0.885 \| good	10.693 \| good	0.3 \| good
2026-03-06T20:00:00.000Z	49 \| good	8.598 \| good	37.397 \| good	14.132 \| good	1.15 \| good	8.48 \| good	0.329 \| good
2026-03-06T21:00:00.000Z	54 \| moderate	10.758 \| good	25.192 \| good	13.04 \| good	1.221 \| good	6.431 \| good	0.264 \| good
2026-03-06T22:00:00.000Z	54 \| moderate	11.294 \| good	46.217 \| good	19.263 \| good	0.904 \| good	4.375 \| good	0.25 \| good
2026-03-06T23:00:00.000Z	38 \| good	7.364 \| good	39.934 \| good	32.77 \| good	0.886 \| good	5.225 \| good	0.249 \| good
2026-03-07T00:00:00.000Z	33 \| good	5.603 \| good	25.308 \| good	29.67 \| good	0.779 \| good	2.79 \| good	0.229 \| good
2026-03-07T01:00:00.000Z	27 \| good	5.384 \| good	20.423 \| good	28.472 \| good	0.696 \| good	2.3 \| good	0.195 \| good
2026-03-07T02:00:00.000Z	29 \| good	4.536 \| good	21.173 \| good	30.791 \| good	0.626 \| good	3.657 \| good	0.195 \| good
2026-03-07T03:00:00.000Z	29 \| good	3.597 \| good	23.371 \| good	31.202 \| good	0.575 \| good	4.355 \| good	0.195 \| good
2026-03-07T04:00:00.000Z	28 \| good	3.005 \| good	19.125 \| good	30.368 \| good	0.593 \| good	4.27 \| good	0.195 \| good
2026-03-07T05:00:00.000Z	27 \| good	3.382 \| good	16.688 \| good	28.898 \| good	0.548 \| good	4.307 \| good	0.18 \| good
2026-03-07T06:00:00.000Z	22 \| good	4.201 \| good	16.593 \| good	23.854 \| good	0.417 \| good	4.353 \| good	0.18 \| good
2026-03-07T07:00:00.000Z	22 \| good	4.349 \| good	21.676 \| good	21.514 \| good	0.55 \| good	4.019 \| good	0.18 \| good
2026-03-07T08:00:00.000Z	27 \| good	4.915 \| good	23.236 \| good	18.976 \| good	0.516 \| good	3.502 \| good	0.15 \| good
2026-03-07T09:00:00.000Z	27 \| good	5.374 \| good	23.724 \| good	20.713 \| good	0.476 \| good	2.47 \| good	0.13 \| good
2026-03-07T10:00:00.000Z	33 \| good	6.019 \| good	26.534 \| good	19.596 \| good	0.476 \| good	1.57 \| good	0.15 \| good
2026-03-07T11:00:00.000Z	33 \| good	5.888 \| good	24.576 \| good	18.006 \| good	0.465 \| good	1.97 \| good	0.15 \| good
2026-03-07T12:00:00.000Z	33 \| good	5.585 \| good	20.778 \| good	20.039 \| good	0.452 \| good	2.934 \| good	0.164 \| good
2026-03-07T13:00:00.000Z	33 \| good	6.197 \| good	22.803 \| good	27.008 \| good	0.451 \| good	3.934 \| good	0.15 \| good
2026-03-07T14:00:00.000Z	28 \| good	5.188 \| good	23.43 \| good	30.393 \| good	0.462 \| good	3.375 \| good	0.15 \| good
2026-03-07T15:00:00.000Z	27 \| good	5.025 \| good	23.167 \| good	27.18 \| good	0.417 \| good	2.337 \| good	0.18 \| good
2026-03-07T16:00:00.000Z	31 \| good	2.932 \| good	12.495 \| good	33.349 \| good	0.428 \| good	1.758 \| good	0.18 \| good
2026-03-07T17:00:00.000Z	31 \| good	2.118 \| good	8.376 \| good	32.873 \| good	0.415 \| good	2.03 \| good	0.2 \| good
2026-03-07T18:00:00.000Z	31 \| good	1.812 \| good	7.352 \| good	33.945 \| good	0.33 \| good	1.256 \| good	0.2 \| good
2026-03-07T19:00:00.000Z	28 \| good	2.234 \| good	6.648 \| good	29.741 \| good	0.411 \| good	1.426 \| good	0.195 \| good
2026-03-07T20:00:00.000Z	19 \| good	2.656 \| good	10.109 \| good	20.118 \| good	0.373 \| good	2.208 \| good	0.18 \| good
2026-03-07T21:00:00.000Z	30 \| good	3.155 \| good	13.508 \| good	32.067 \| good	0.414 \| good	2.179 \| good	0.18 \| good
2026-03-07T22:00:00.000Z	22 \| good	3.357 \| good	15.735 \| good	24.213 \| good	0.412 \| good	2.525 \| good	0.18 \| good
2026-03-07T23:00:00.000Z	22 \| good	4.097 \| good	15.697 \| good	19.546 \| good	0.417 \| good	3 \| good	0.2 \| good
2026-03-08T00:00:00.000Z	22 \| good	4.004 \| good	17.85 \| good	16.282 \| good	0.376 \| good	2.853 \| good	0.18 \| good
2026-03-08T01:00:00.000Z	22 \| good	3.813 \| good	18.144 \| good	16.577 \| good	0.368 \| good	3.63 \| good	0.18 \| good
2026-03-08T02:00:00.000Z	22 \| good	3.577 \| good	16.678 \| good	16.99 \| good	0.372 \| good	3.304 \| good	0.18 \| good
2026-03-08T03:00:00.000Z	33 \| good	6.286 \| good	28.006 \| good	29.907 \| good	0.966 \| good	8.464 \| good	0.196 \| good
2026-03-08T04:00:00.000Z	22 \| good	4.415 \| good	20.398 \| good	17.177 \| good	0.374 \| good	4.938 \| good	0.18 \| good
2026-03-08T05:00:00.000Z	27 \| good	4.788 \| good	20.534 \| good	17.239 \| good	0.406 \| good	3.678 \| good	0.15 \| good
2026-03-08T06:00:00.000Z	27 \| good	5.078 \| good	19.734 \| good	20.995 \| good	0.322 \| good	3.415 \| good	0.15 \| good
2026-03-08T07:00:00.000Z	27 \| good	5.31 \| good	23.975 \| good	23.439 \| good	0.366 \| good	2.959 \| good	0.15 \| good
2026-03-08T08:00:00.000Z	27 \| good	5.126 \| good	17.324 \| good	23.775 \| good	0.415 \| good	2.739 \| good	0.164 \| good
2026-03-08T09:00:00.000Z	27 \| good	5.14 \| good	19.205 \| good	23.923 \| good	0.325 \| good	6.583 \| good	0.144 \| good
2026-03-08T10:00:00.000Z	33 \| good	5.63 \| good	24.02 \| good	24.734 \| good	0.455 \| good	2.042 \| good	0.164 \| good
2026-03-08T11:00:00.000Z	33 \| good	6.206 \| good	26.866 \| good	27.126 \| good	0.645 \| good	1.391 \| good	0.164 \| good
2026-03-08T12:00:00.000Z	38 \| good	6.667 \| good	30.842 \| good	26.714 \| good	0.803 \| good	2.317 \| good	0.164 \| good
2026-03-08T13:00:00.000Z	38 \| good	6.667 \| good	30.842 \| good	26.714 \| good	0.803 \| good	2.317 \| good	0.164 \| good
2026-03-08T14:00:00.000Z	30 \| good	3.338 \| good	14.994 \| good	32.276 \| good	0.791 \| good	4.072 \| good	0.177 \| good
2026-03-08T15:00:00.000Z	29 \| good	4.163 \| good	18.008 \| good	31.079 \| good	0.839 \| good	4.142 \| good	0.181 \| good
2026-03-08T16:00:00.000Z	33 \| good	5.597 \| good	24.005 \| good	32.219 \| good	0.857 \| good	3.569 \| good	0.174 \| good
2026-03-08T17:00:00.000Z	33 \| good	5.891 \| good	25.028 \| good	34.547 \| good	0.874 \| good	2.995 \| good	0.167 \| good
2026-03-08T18:00:00.000Z	34 \| good	5.251 \| good	22.983 \| good	37.048 \| good	0.892 \| good	2.421 \| good	0.161 \| good
2026-03-08T19:00:00.000Z	36 \| good	5.28 \| good	22.981 \| good	39.241 \| good	0.904 \| good	2.519 \| good	0.159 \| good
2026-03-08T20:00:00.000Z	39 \| good	4.268 \| good	18.99 \| good	41.56 \| good	0.916 \| good	2.617 \| good	0.158 \| good
2026-03-08T21:00:00.000Z	40 \| good	3.304 \| good	14.99 \| good	43.032 \| good	0.928 \| good	2.714 \| good	0.157 \| good
2026-03-08T22:00:00.000Z	40 \| good	2.31 \| good	9.979 \| good	42.819 \| good	0.969 \| good	4.15 \| good	0.166 \| good
2026-03-08T23:00:00.000Z	39 \| good	1.065 \| good	4.018 \| good	42.186 \| good	1.009 \| good	5.586 \| good	0.174 \| good
2026-03-09T00:00:00.000Z	38 \| good	0.863 \| good	3.008 \| good	40.586 \| good	1.049 \| good	7.021 \| good	0.182 \| good
2026-03-09T01:00:00.000Z	36 \| good	1.457 \| good	5.995 \| good	38.522 \| good	0.989 \| good	6.315 \| good	0.176 \| good
2026-03-09T02:00:00.000Z	35 \| good	2.978 \| good	12.02 \| good	37.892 \| good	0.929 \| good	5.609 \| good	0.171 \| good
2026-03-09T03:00:00.000Z	34 \| good	3.455 \| good	15.011 \| good	36.626 \| good	0.87 \| good	4.903 \| good	0.165 \| good
2026-03-09T04:00:00.000Z	34 \| good	3.29 \| good	14.017 \| good	36.737 \| good	0.825 \| good	4.388 \| good	0.16 \| good
2026-03-09T05:00:00.000Z	33 \| good	3.67 \| good	16.004 \| good	35.751 \| good	0.781 \| good	3.873 \| good	0.156 \| good
2026-03-09T06:00:00.000Z	32 \| good	4.043 \| good	17.992 \| good	34.82 \| good	0.737 \| good	3.358 \| good	0.151 \| good
2026-03-09T07:00:00.000Z	31 \| good	3.124 \| good	13.968 \| good	33.826 \| good	0.72 \| good	3.124 \| good	0.148 \| good
2026-03-09T08:00:00.000Z	29 \| good	3.274 \| good	14.011 \| good	31.14 \| good	0.703 \| good	2.89 \| good	0.145 \| good
2026-03-09T09:00:00.000Z	26 \| good	4.266 \| good	18.985 \| good	28.249 \| good	0.686 \| good	2.656 \| good	0.142 \| good
2026-03-09T10:00:00.000Z	27 \| good	4.685 \| good	20.015 \| good	23.087 \| good	0.705 \| good	2.82 \| good	0.142 \| good
2026-03-09T11:00:00.000Z	38 \| good	6.936 \| good	30.979 \| good	20.866 \| good	0.723 \| good	2.983 \| good	0.142 \| good
2026-03-09T12:00:00.000Z	38 \| good	6.51 \| good	28.992 \| good	18.851 \| good	0.742 \| good	3.146 \| good	0.142 \| good
2026-03-09T13:00:00.000Z	33 \| good	6.293 \| good	27.992 \| good	19.613 \| good	0.83 \| good	3.678 \| good	0.15 \| good
2026-03-09T14:00:00.000Z	33 \| good	6.14 \| good	27.007 \| good	22.414 \| good	0.918 \| good	4.211 \| good	0.158 \| good
2026-03-09T15:00:00.000Z	38 \| good	7.406 \| good	32.987 \| good	25.645 \| good	1.006 \| good	4.743 \| good	0.166 \| good
2026-03-09T16:00:00.000Z	44 \| good	7.567 \| good	33.004 \| good	30.592 \| good	1.041 \| good	4.056 \| good	0.162 \| good
2026-03-09T17:00:00.000Z	44 \| good	7.564 \| good	33.016 \| good	34.519 \| good	1.077 \| good	3.368 \| good	0.157 \| good
2026-03-09T18:00:00.000Z	44 \| good	8.487 \| good	37.015 \| good	38.222 \| good	1.112 \| good	2.681 \| good	0.152 \| good
2026-03-09T19:00:00.000Z	52 \| moderate	9.514 \| good	42.979 \| good	38.773 \| good	1.047 \| good	2.538 \| good	0.149 \| good
2026-03-09T20:00:00.000Z	49 \| good	8.94 \| good	39.022 \| good	43.253 \| good	0.982 \| good	2.396 \| good	0.146 \| good
2026-03-09T21:00:00.000Z	44 \| good	8.281 \| good	36.013 \| good	44.117 \| good	0.916 \| good	2.253 \| good	0.143 \| good
2026-03-09T22:00:00.000Z	44 \| good	7.968 \| good	34.99 \| good	43.705 \| good	0.991 \| good	4.698 \| good	0.159 \| good
2026-03-09T23:00:00.000Z	42 \| good	6.363 \| good	28.006 \| good	44.524 \| good	1.065 \| good	7.143 \| good	0.176 \| good
2026-03-10T00:00:00.000Z	37 \| good	5.146 \| good	22.007 \| good	40.163 \| good	1.139 \| good	9.588 \| good	0.192 \| good
2026-03-10T01:00:00.000Z	35 \| good	4.849 \| good	20.977 \| good	37.845 \| good	1.223 \| good	10.385 \| good	0.197 \| good
2026-03-10T02:00:00.000Z	35 \| good	5.948 \| good	26.951 \| good	37.659 \| good	1.308 \| good	11.182 \| good	0.201 \| good
2026-03-10T03:00:00.000Z	34 \| good	6.021 \| good	26.968 \| good	37.399 \| good	1.392 \| good	11.979 \| good	0.206 \| good
2026-03-10T04:00:00.000Z	33 \| good	4.87 \| good	20.99 \| good	35.662 \| good	1.292 \| good	10.239 \| good	0.197 \| good
2026-03-10T05:00:00.000Z	31 \| good	5.479 \| good	23.012 \| good	33.173 \| good	1.192 \| good	8.498 \| good	0.188 \| good
2026-03-10T06:00:00.000Z	38 \| good	7.097 \| good	7.235 \| good	31.425 \| good	1.093 \| good	6.707 \| good	0.179 \| good
2026-03-10T07:00:00.000Z	33 \| good	6.49 \| good	28.982 \| good	32.1 \| good	1.011 \| good	5.86 \| good	0.17 \| good
2026-03-10T08:00:00.000Z	33 \| good	5.862 \| good	25.027 \| good	28.91 \| good	0.93 \| good	4.963 \| good	0.161 \| good
2026-03-10T09:00:00.000Z	33 \| good	6.12 \| good	26.99 \| good	25.82 \| good	0.85 \| good	4.065 \| good	0.152 \| good
2026-03-10T10:00:00.000Z	33 \| good	6.42 \| good	28.974 \| good	26.077 \| good	0.905 \| good	4.691 \| good	0.153 \| good
2026-03-10T11:00:00.000Z	38 \| good	6.884 \| good	30.023 \| good	24.248 \| good	0.961 \| good	5.318 \| good	0.155 \| good
2026-03-10T12:00:00.000Z	44 \| good	7.991 \| good	8.059 \| good	25.629 \| good	1.014 \| good	5.911 \| good	0.156 \| good
2026-03-10T13:00:00.000Z	52 \| moderate	9.788 \| good	9.849 \| good	25.296 \| good	1.138 \| good	6.524 \| good	0.169 \| good

St. John

Empower business decisions with accurate air quality data

St. John, Indiana air quality map: Real-time AQI near you

0.16ppm

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 St. John, Indiana updated?

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

When did St. John, Indiana experience the worst air quality in the last 24 hours?

The worst air quality in St. John, Indiana was recorded at 12:00:00 on 2026-03-08.

When did St. John, Indiana have its best air quality in the last 24 hours?

The best air quality in St. John, Indiana was recorded at 08:00:00 on 2026-03-07.

What is the real-time air quality index for St. John, Indiana?

The real-time air quality index in St. John, Indiana is 38, currently categorized as Good.

Which pollutant is found most often in St. John, Indiana?

The most common pollutant in St. John, Indiana is PM2.5.

What can I do if the air quality in St. John, Indiana is poor?

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

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

The measured PM_2.5 levels in St. John, Indiana at present are 6.667 μg/m³.

What are the current PM₁₀ levels at St. John, Indiana?

The current PM₁₀ levels in St. John, Indiana are 30.842 μg/m³.

What are the current carbon monoxide (CO) levels at St. John, Indiana?

The current carbon monoxide (CO) level in St. John, Indiana is 0.164 ppm.

What are the current sulfur dioxide (SO₂) levels at St. John, Indiana?

The current sulfur dioxide (SO₂) levels in St. John, Indiana are 0.803 ppb.

What are the current ozone (O₃) levels at St. John, Indiana?

The current ozone (O₃) levels at St. John, Indiana is 26.714 ppm.

What are the current nitrogen dioxide (NO₂) levels at St. John, Indiana?

The current nitrogen dioxide (NO₂) levels at St. John, Indiana is 2.317 ppb.

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