What are the current PM10 levels at Johnstown, Pennsylvania?

The current PM10 levels in Johnstown, Pennsylvania are 17.968 μg/m3.

What are the current sulfur dioxide (SO2) levels at Johnstown, Pennsylvania?

The current sulfur dioxide (SO2) levels in Johnstown, Pennsylvania are 0.837 ppb.

What are the current ozone (O3) levels at Johnstown, Pennsylvania?

The current ozone (O3) levels at Johnstown, Pennsylvania is 29.043 ppm.

What are the current nitrogen dioxide (NO2) levels at Johnstown, Pennsylvania?

The current nitrogen dioxide (NO2) levels at Johnstown, Pennsylvania is 8.738 ppb.

Real-time air quality index in Johnstown, Pennsylvania today

Q: What are the current PM2.5 levels in Johnstown, Pennsylvania?

The measured PM2.5 levels in Johnstown, Pennsylvania at present are 3.993 μg/m3.

Stay updated with real-time air quality in Johnstown, Pennsylvania 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

Johnstown, Pennsylvania

Last updated: ... (Local time)

Common air pollutants in Johnstown, Pennsylvania

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

3.99 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

17.97 μg/m³

155

255

425

605+

Ozone (O₃)

29.04 ppb

201

201+

Sulfur Dioxide (SO₂)

0.84 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

8.74 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.18 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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Johnstown, Pennsylvania

Scroll To Air Quality Map

Track live Johnstown, Pennsylvania air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-01-21T05:00:00.000Z	52 \| moderate	9.764 \| good	43.836 \| good	9.177 \| good	0.839 \| good	13.812 \| good	0.3 \| good
2026-01-21T06:00:00.000Z	54 \| moderate	10.501 \| good	47.006 \| good	9.165 \| good	0.856 \| good	11.791 \| good	0.419 \| good
2026-01-21T07:00:00.000Z	54 \| moderate	11.085 \| good	48.93 \| good	9.163 \| good	0.878 \| good	10.399 \| good	0.419 \| good
2026-01-21T08:00:00.000Z	54 \| moderate	11.072 \| good	48.872 \| good	11.112 \| good	0.929 \| good	10.875 \| good	0.44 \| good
2026-01-21T09:00:00.000Z	56 \| moderate	11.577 \| good	50.896 \| good	11.11 \| good	0.787 \| good	8.015 \| good	0.44 \| good
2026-01-21T10:00:00.000Z	56 \| moderate	12.071 \| good	54.858 \| good	10.084 \| good	0.774 \| good	8.761 \| good	0.419 \| good
2026-01-21T11:00:00.000Z	56 \| moderate	12.28 \| fine	54.907 \| good	8.12 \| good	1.277 \| good	10.053 \| good	0.459 \| good
2026-01-21T12:00:00.000Z	56 \| moderate	12.379 \| fine	56.886 \| fine	8.108 \| good	1.17 \| good	6.817 \| good	0.559 \| good
2026-01-21T13:00:00.000Z	58 \| moderate	13.165 \| fine	58.841 \| fine	8.074 \| good	1.166 \| good	7.881 \| good	0.599 \| good
2026-01-21T14:00:00.000Z	60 \| moderate	14.253 \| fine	64.787 \| fine	10.11 \| good	1.162 \| good	8.833 \| good	0.638 \| good
2026-01-21T15:00:00.000Z	62 \| moderate	14.935 \| fine	66.711 \| fine	10.146 \| good	1.03 \| good	9.939 \| good	0.47 \| good
2026-01-21T16:00:00.000Z	62 \| moderate	15.42 \| fine	68.639 \| fine	11.164 \| good	0.883 \| good	8.02 \| good	0.362 \| good
2026-01-21T17:00:00.000Z	66 \| moderate	17.096 \| fine	76.531 \| fine	12.166 \| good	0.914 \| good	5.635 \| good	0.341 \| good
2026-01-21T18:00:00.000Z	67 \| moderate	18.479 \| fine	82.45 \| fine	14.183 \| good	1.073 \| good	6.236 \| good	0.217 \| good
2026-01-21T19:00:00.000Z	69 \| moderate	19.269 \| fine	84.428 \| fine	15.186 \| good	0.782 \| good	4.132 \| good	0.18 \| good
2026-01-21T20:00:00.000Z	56 \| moderate	12.432 \| fine	56.678 \| fine	23.125 \| good	0.674 \| good	3.326 \| good	0.175 \| good
2026-01-21T21:00:00.000Z	49 \| good	9.16 \| good	40.816 \| good	22.148 \| good	1.04 \| good	3.16 \| good	0.179 \| good
2026-01-21T22:00:00.000Z	44 \| good	7.972 \| good	34.866 \| good	19.185 \| good	1.021 \| good	3.184 \| good	0.2 \| good
2026-01-21T23:00:00.000Z	38 \| good	6.982 \| good	30.913 \| good	26.132 \| good	0.978 \| good	3.266 \| good	0.217 \| good
2026-01-22T00:00:00.000Z	33 \| good	6.189 \| good	27.946 \| good	31.088 \| good	0.937 \| good	3.88 \| good	0.279 \| good
2026-01-22T01:00:00.000Z	33 \| good	5.891 \| good	26.954 \| good	30.091 \| good	0.909 \| good	5.37 \| good	0.3 \| good
2026-01-22T02:00:00.000Z	33 \| good	5.792 \| good	24.972 \| good	32.066 \| good	0.907 \| good	4.279 \| good	0.258 \| good
2026-01-22T03:00:00.000Z	34 \| good	5.991 \| good	26.955 \| good	37.012 \| good	0.948 \| good	5.128 \| good	0.217 \| good
2026-01-22T04:00:00.000Z	33 \| good	6.191 \| good	27.953 \| good	35.025 \| good	1.089 \| good	4.843 \| good	0.196 \| good
2026-01-22T05:00:00.000Z	34 \| good	5.696 \| good	24.991 \| good	37.007 \| good	1.216 \| good	3.773 \| good	0.196 \| good
2026-01-22T06:00:00.000Z	35 \| good	5.1 \| good	22.005 \| good	38.008 \| good	1.258 \| good	4.035 \| good	0.179 \| good
2026-01-22T07:00:00.000Z	35 \| good	4.704 \| good	21.017 \| good	38.006 \| good	1.002 \| good	3.453 \| good	0.179 \| good
2026-01-22T08:00:00.000Z	36 \| good	6.197 \| good	27.991 \| good	39.001 \| good	0.981 \| good	3.776 \| good	0.179 \| good
2026-01-22T09:00:00.000Z	49 \| good	8.591 \| good	37.962 \| good	39.976 \| good	0.648 \| good	3.631 \| good	0.179 \| good
2026-01-22T10:00:00.000Z	52 \| moderate	9.883 \| good	43.926 \| good	37.968 \| good	0.607 \| good	3.218 \| good	0.2 \| good
2026-01-22T11:00:00.000Z	54 \| moderate	11.377 \| good	50.895 \| good	36.967 \| good	0.584 \| good	3.465 \| good	0.242 \| good
2026-01-22T12:00:00.000Z	56 \| moderate	11.79 \| good	51.966 \| good	34.995 \| good	1.137 \| good	4.305 \| good	0.262 \| good
2026-01-22T13:00:00.000Z	56 \| moderate	11.694 \| good	51.983 \| good	35.991 \| good	1.663 \| good	4.988 \| good	0.283 \| good
2026-01-22T14:00:00.000Z	54 \| moderate	11.495 \| good	50.987 \| good	35.996 \| good	2.631 \| good	3.642 \| good	0.283 \| good
2026-01-22T15:00:00.000Z	56 \| moderate	11.588 \| good	50.95 \| good	34.011 \| good	0.525 \| good	4.369 \| good	0.325 \| good
2026-01-22T16:00:00.000Z	49 \| good	9.496 \| good	42.976 \| good	35.009 \| good	0.612 \| good	5.856 \| good	0.283 \| good
2026-01-22T17:00:00.000Z	38 \| good	7.1 \| good	31.991 \| good	37.007 \| good	0.516 \| good	4.226 \| good	0.221 \| good
2026-01-22T18:00:00.000Z	35 \| good	5.301 \| good	23.002 \| good	38.006 \| good	0.482 \| good	3.373 \| good	0.179 \| good
2026-01-22T19:00:00.000Z	35 \| good	3.801 \| good	16.998 \| good	38.016 \| good	0.443 \| good	2.879 \| good	0.142 \| good
2026-01-22T20:00:00.000Z	35 \| good	2.9 \| good	12.011 \| good	38.016 \| good	0.515 \| good	2.791 \| good	0.14 \| good
2026-01-22T21:00:00.000Z	35 \| good	2.699 \| good	11 \| good	38.014 \| good	0.531 \| good	1.474 \| good	0.14 \| good
2026-01-22T22:00:00.000Z	35 \| good	2.698 \| good	10.997 \| good	38.009 \| good	0.412 \| good	2.371 \| good	0.14 \| good
2026-01-22T23:00:00.000Z	34 \| good	2.698 \| good	10.998 \| good	37.013 \| good	0.984 \| good	2.791 \| good	0.14 \| good
2026-01-23T00:00:00.000Z	33 \| good	2.896 \| good	11.991 \| good	36.007 \| good	1.416 \| good	4.745 \| good	0.14 \| good
2026-01-23T01:00:00.000Z	31 \| good	5.077 \| good	21.905 \| good	33.045 \| good	0.7 \| good	7.634 \| good	0.16 \| good
2026-01-23T02:00:00.000Z	31 \| good	4.583 \| good	19.93 \| good	33.025 \| good	0.636 \| good	9.967 \| good	0.14 \| good
2026-01-23T03:00:00.000Z	26 \| good	3.99 \| good	17.956 \| good	28.068 \| good	0.594 \| good	9.296 \| good	0.18 \| good
2026-01-23T04:00:00.000Z	27 \| good	3.993 \| good	17.968 \| good	29.043 \| good	0.837 \| good	8.738 \| good	0.18 \| good
2026-01-23T04:00:00.000Z	27 \| good	3.993 \| good	17.968 \| good	29.043 \| good	0.837 \| good	8.738 \| good	0.18 \| good
2026-01-23T05:00:00.000Z	28 \| good	4.775 \| good	20.437 \| good	30.448 \| good	2.858 \| good	4.15 \| good	0.185 \| good
2026-01-23T06:00:00.000Z	28 \| good	5.404 \| good	22.954 \| good	30.462 \| good	2.847 \| good	4.005 \| good	0.184 \| good
2026-01-23T07:00:00.000Z	33 \| good	6.276 \| good	27.694 \| good	29.51 \| good	3.065 \| good	3.712 \| good	0.181 \| good
2026-01-23T08:00:00.000Z	38 \| good	7.069 \| good	31.624 \| good	29.492 \| good	3.283 \| good	3.418 \| good	0.178 \| good
2026-01-23T09:00:00.000Z	38 \| good	6.937 \| good	30.744 \| good	29.358 \| good	3.502 \| good	3.124 \| good	0.175 \| good
2026-01-23T10:00:00.000Z	33 \| good	6.28 \| good	27.979 \| good	29.488 \| good	3.558 \| good	3.069 \| good	0.174 \| good
2026-01-23T11:00:00.000Z	38 \| good	6.751 \| good	29.958 \| good	30.676 \| good	3.614 \| good	3.015 \| good	0.173 \| good
2026-01-23T12:00:00.000Z	44 \| good	7.604 \| good	33.623 \| good	28.469 \| good	3.67 \| good	2.96 \| good	0.172 \| good
2026-01-23T13:00:00.000Z	44 \| good	8.133 \| good	35.656 \| good	30.61 \| good	3.423 \| good	2.958 \| good	0.175 \| good
2026-01-23T14:00:00.000Z	38 \| good	7.052 \| good	31.566 \| good	34.493 \| good	3.176 \| good	2.956 \| good	0.178 \| good
2026-01-23T15:00:00.000Z	44 \| good	7.726 \| good	33.685 \| good	33.815 \| good	2.928 \| good	2.954 \| good	0.181 \| good
2026-01-23T16:00:00.000Z	33 \| good	6.486 \| good	28.695 \| good	35.189 \| good	2.725 \| good	2.51 \| good	0.17 \| good
2026-01-23T17:00:00.000Z	33 \| good	6.47 \| good	29.192 \| good	34.211 \| good	2.521 \| good	2.067 \| good	0.159 \| good
2026-01-23T18:00:00.000Z	33 \| good	6.179 \| good	27.405 \| good	32.578 \| good	2.317 \| good	1.623 \| good	0.148 \| good
2026-01-23T19:00:00.000Z	30 \| good	3.78 \| good	16.765 \| good	32.273 \| good	2.218 \| good	1.752 \| good	0.149 \| good
2026-01-23T20:00:00.000Z	30 \| good	3.27 \| good	14.455 \| good	31.733 \| good	2.118 \| good	1.88 \| good	0.15 \| good
2026-01-23T21:00:00.000Z	28 \| good	2.675 \| good	10.91 \| good	29.502 \| good	2.018 \| good	2.009 \| good	0.152 \| good
2026-01-23T22:00:00.000Z	28 \| good	2.682 \| good	10.828 \| good	30.053 \| good	1.966 \| good	2.371 \| good	0.151 \| good
2026-01-23T23:00:00.000Z	28 \| good	3.19 \| good	13.601 \| good	30.078 \| good	1.914 \| good	2.733 \| good	0.149 \| good
2026-01-24T00:00:00.000Z	23 \| good	4.455 \| good	19.527 \| good	24.782 \| good	1.862 \| good	3.095 \| good	0.148 \| good
2026-01-24T01:00:00.000Z	27 \| good	5.086 \| good	22.255 \| good	23.845 \| good	1.813 \| good	3.008 \| good	0.148 \| good
2026-01-24T02:00:00.000Z	24 \| good	3.914 \| good	17.395 \| good	26.107 \| good	1.765 \| good	2.92 \| good	0.147 \| good
2026-01-24T03:00:00.000Z	27 \| good	3.279 \| good	14.31 \| good	28.858 \| good	1.716 \| good	2.832 \| good	0.147 \| good
2026-01-24T04:00:00.000Z	25 \| good	2.615 \| good	10.756 \| good	27.383 \| good	1.65 \| good	2.804 \| good	0.147 \| good
2026-01-24T05:00:00.000Z	19 \| good	3.447 \| good	15.177 \| good	21.302 \| good	1.585 \| good	2.776 \| good	0.148 \| good
2026-01-24T06:00:00.000Z	19 \| good	3.488 \| good	15.533 \| good	20.518 \| good	1.519 \| good	2.748 \| good	0.148 \| good
2026-01-24T07:00:00.000Z	22 \| good	3.868 \| good	16.766 \| good	18.965 \| good	1.477 \| good	2.674 \| good	0.148 \| good
2026-01-24T08:00:00.000Z	22 \| good	4.289 \| good	18.737 \| good	18.81 \| good	1.435 \| good	2.599 \| good	0.148 \| good
2026-01-24T09:00:00.000Z	19 \| good	3.376 \| good	14.697 \| good	20.442 \| good	1.392 \| good	2.525 \| good	0.147 \| good
2026-01-24T10:00:00.000Z	18 \| good	2.852 \| good	11.902 \| good	19.206 \| good	1.511 \| good	2.844 \| good	0.151 \| good
2026-01-24T11:00:00.000Z	27 \| good	4.68 \| good	20.526 \| good	19.028 \| good	1.629 \| good	3.163 \| good	0.154 \| good
2026-01-24T12:00:00.000Z	33 \| good	5.866 \| good	26.011 \| good	17.491 \| good	1.748 \| good	3.482 \| good	0.158 \| good
2026-01-24T13:00:00.000Z	33 \| good	6.11 \| good	27.048 \| good	19.185 \| good	2.075 \| good	2.951 \| good	0.156 \| good
2026-01-24T14:00:00.000Z	27 \| good	5.041 \| good	21.58 \| good	23.573 \| good	2.402 \| good	2.419 \| good	0.155 \| good
2026-01-24T15:00:00.000Z	33 \| good	6.471 \| good	28.866 \| good	23.545 \| good	2.729 \| good	1.887 \| good	0.153 \| good
2026-01-24T16:00:00.000Z	33 \| good	6.445 \| good	28.888 \| good	20.737 \| good	2.743 \| good	1.718 \| good	0.15 \| good
2026-01-24T17:00:00.000Z	38 \| good	6.877 \| good	30.163 \| good	20.662 \| good	2.758 \| good	1.548 \| good	0.147 \| good
2026-01-24T18:00:00.000Z	27 \| good	5.306 \| good	22.528 \| good	21.51 \| good	2.772 \| good	1.379 \| good	0.144 \| good
2026-01-24T19:00:00.000Z	23 \| good	2.449 \| good	10 \| good	24.728 \| good	2.649 \| good	1.654 \| good	0.143 \| good
2026-01-24T20:00:00.000Z	23 \| good	3.267 \| good	14.643 \| good	24.949 \| good	2.525 \| good	1.929 \| good	0.143 \| good
2026-01-24T21:00:00.000Z	22 \| good	3.686 \| good	15.979 \| good	23.179 \| good	2.402 \| good	2.204 \| good	0.143 \| good
2026-01-24T22:00:00.000Z	22 \| good	4.384 \| good	18.823 \| good	23.592 \| good	2.022 \| good	2.453 \| good	0.147 \| good
2026-01-24T23:00:00.000Z	27 \| good	4.904 \| good	21.412 \| good	19.478 \| good	1.642 \| good	2.703 \| good	0.15 \| good
2026-01-25T00:00:00.000Z	29 \| good	2.386 \| good	2.523 \| good	31.253 \| good	1.216 \| good	2.928 \| good	0.154 \| good
2026-01-25T01:00:00.000Z	33 \| good	6.45 \| good	28.872 \| good	13.185 \| good	1.023 \| good	2.976 \| good	0.156 \| good
2026-01-25T02:00:00.000Z	27 \| good	5.037 \| good	21.744 \| good	12.971 \| good	0.785 \| good	3.001 \| good	0.159 \| good
2026-01-25T03:00:00.000Z	27 \| good	5.372 \| good	23.303 \| good	10.946 \| good	0.547 \| good	3.025 \| good	0.161 \| good
2026-01-25T04:00:00.000Z	33 \| good	5.713 \| good	24.591 \| good	11.203 \| good	0.455 \| good	2.799 \| good	0.159 \| good

Johnstown

Empower business decisions with accurate air quality data

Johnstown, Pennsylvania air quality map: Real-time AQI near you

0.18ppm

How accurate is Pennsylvania, USA air quality data?

Air quality measurements for Pennsylvania, 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 Johnstown, Pennsylvania updated?

Air quality data for Johnstown, Pennsylvania is updated on an hourly basis.

When did Johnstown, Pennsylvania experience the worst air quality in the last 24 hours?

The worst air quality in Johnstown, Pennsylvania was recorded at 03:00:00 on 2026-01-22.

When did Johnstown, Pennsylvania have its best air quality in the last 24 hours?

The best air quality in Johnstown, Pennsylvania was recorded at 03:00:00 on 2026-01-23.

What is the real-time air quality index for Johnstown, Pennsylvania?

The real-time air quality index in Johnstown, Pennsylvania is 27, currently categorized as Good.

Which pollutant is found most often in Johnstown, Pennsylvania?

The most common pollutant in Johnstown, Pennsylvania is O3.

What can I do if the air quality in Johnstown, Pennsylvania is poor?

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

What are the current PM_2.5 levels in Johnstown, Pennsylvania?

The measured PM_2.5 levels in Johnstown, Pennsylvania at present are 3.993 μg/m³.

What are the current PM₁₀ levels at Johnstown, Pennsylvania?

The current PM₁₀ levels in Johnstown, Pennsylvania are 17.968 μg/m³.

What are the current carbon monoxide (CO) levels at Johnstown, Pennsylvania?

The current carbon monoxide (CO) level in Johnstown, Pennsylvania is 0.18 ppm.

What are the current sulfur dioxide (SO₂) levels at Johnstown, Pennsylvania?

The current sulfur dioxide (SO₂) levels in Johnstown, Pennsylvania are 0.837 ppb.

What are the current ozone (O₃) levels at Johnstown, Pennsylvania?

The current ozone (O₃) levels at Johnstown, Pennsylvania is 29.043 ppm.

What are the current nitrogen dioxide (NO₂) levels at Johnstown, Pennsylvania?

The current nitrogen dioxide (NO₂) levels at Johnstown, Pennsylvania is 8.738 ppb.

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