What is the current concentration of PM10 in Johnstown, Colorado?

The current PM10 concentration at Johnstown, Colorado is 17.954 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Johnstown, Colorado?

The current sulfur dioxide (SO2) concentration at Johnstown, Colorado is 0.668 ppb.

What is the current concentration of ozone (O3) in Johnstown, Colorado?

The current ozone (O3) concentration at Johnstown, Colorado is 29.12 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Johnstown, Colorado?

The current nitrogen dioxide (NO2) concentration at Johnstown, Colorado is 7.052 ppb.

Live air quality index in Johnstown, Colorado today

Name: Live air pollution levels in Johnstown, Colorado today
Creator: Ambee

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

Last updated: ... (Local time)

Major air pollutants in Johnstown, Colorado

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

7.64 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

17.95 μg/m³

155

255

425

605+

Ozone (O₃)

29.12 ppb

201

201+

Sulfur Dioxide (SO₂)

0.67 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

7.05 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.27 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Johnstown, Colorado

Get Live Pollen Counts

Johnstown, Colorado

Scroll To Air Quality Map

Track live Johnstown, Colorado air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-02T16:00:00.000Z	31 \| good	4.718 \| good	18.23 \| good	34.48 \| good	0.901 \| good	5.604 \| good	0.223 \| good
2025-06-02T17:00:00.000Z	37 \| good	4.921 \| good	23.188 \| good	40.269 \| good	0.815 \| good	7.06 \| good	0.229 \| good
2025-06-02T18:00:00.000Z	35 \| good	5.234 \| good	25.404 \| good	38.253 \| good	1.04 \| good	7.087 \| good	0.171 \| good
2025-06-02T19:00:00.000Z	45 \| good	5.649 \| good	29.708 \| good	49.072 \| good	1.179 \| good	7.794 \| good	0.171 \| good
2025-06-02T20:00:00.000Z	47 \| good	5.931 \| good	27.975 \| good	50.745 \| good	1.303 \| good	6.389 \| good	0.17 \| good
2025-06-02T21:00:00.000Z	48 \| good	5.998 \| good	34.969 \| good	51.603 \| good	1.211 \| good	5.906 \| good	0.146 \| good
2025-06-02T22:00:00.000Z	49 \| good	6.179 \| good	32.161 \| good	52.853 \| good	1.095 \| good	9.623 \| good	0.222 \| good
2025-06-02T23:00:00.000Z	48 \| good	5.796 \| good	25.793 \| good	52.172 \| good	1.012 \| good	7.687 \| good	0.194 \| good
2025-06-03T00:00:00.000Z	46 \| good	4.629 \| good	28.701 \| good	50.02 \| good	1.086 \| good	4.635 \| good	0.249 \| good
2025-06-03T01:00:00.000Z	40 \| good	5.553 \| good	27.319 \| good	43.18 \| good	0.728 \| good	5.103 \| good	0.184 \| good
2025-06-03T02:00:00.000Z	46 \| good	6.114 \| good	33.038 \| good	49.548 \| good	0.797 \| good	4.206 \| good	0.156 \| good
2025-06-03T03:00:00.000Z	46 \| good	6.344 \| good	50.035 \| good	43.031 \| good	0.727 \| good	2.791 \| good	0.179 \| good
2025-06-03T04:00:00.000Z	42 \| good	5.397 \| good	43.993 \| good	45.338 \| good	0.606 \| good	2.118 \| good	0.137 \| good
2025-06-03T05:00:00.000Z	39 \| good	3.694 \| good	14.224 \| good	42.206 \| good	0.581 \| good	1.771 \| good	0.152 \| good
2025-06-03T06:00:00.000Z	39 \| good	4.227 \| good	17.546 \| good	42.227 \| good	0.553 \| good	1.49 \| good	0.138 \| good
2025-06-03T07:00:00.000Z	37 \| good	4.445 \| good	12.631 \| good	40.159 \| good	0.482 \| good	1.645 \| good	0.138 \| good
2025-06-03T08:00:00.000Z	33 \| good	3.739 \| good	26.759 \| good	35.826 \| good	0.551 \| good	1.36 \| good	0.129 \| good
2025-06-03T09:00:00.000Z	32 \| good	2.702 \| good	5.414 \| good	35.203 \| good	0.518 \| good	1.377 \| good	0.1 \| good
2025-06-03T10:00:00.000Z	32 \| good	2.899 \| good	5.255 \| good	35.086 \| good	0.436 \| good	1.744 \| good	0.1 \| good
2025-06-03T11:00:00.000Z	35 \| good	1.859 \| good	4.224 \| good	37.904 \| good	0.447 \| good	1.442 \| good	0.114 \| good
2025-06-03T12:00:00.000Z	34 \| good	2.638 \| good	4.382 \| good	37.473 \| good	0.481 \| good	3.028 \| good	0.141 \| good
2025-06-03T13:00:00.000Z	34 \| good	2.37 \| good	4.077 \| good	37.376 \| good	0.451 \| good	4.947 \| good	0.198 \| good
2025-06-03T14:00:00.000Z	37 \| good	1.998 \| good	7.81 \| good	40.001 \| good	0.487 \| good	3.873 \| good	0.184 \| good
2025-06-03T15:00:00.000Z	37 \| good	1.512 \| good	4.524 \| good	39.543 \| good	0.479 \| good	2.252 \| good	0.156 \| good
2025-06-03T16:00:00.000Z	37 \| good	2.092 \| good	5.054 \| good	40.078 \| good	0.477 \| good	3.673 \| good	0.156 \| good
2025-06-03T17:00:00.000Z	38 \| good	2.623 \| good	5.04 \| good	41.124 \| good	0.442 \| good	2.846 \| good	0.141 \| good
2025-06-03T18:00:00.000Z	41 \| good	3.232 \| good	10.249 \| good	43.858 \| good	0.51 \| good	2.047 \| good	0.141 \| good
2025-06-03T19:00:00.000Z	41 \| good	3.524 \| good	19.467 \| good	43.775 \| good	0.571 \| good	3.429 \| good	0.114 \| good
2025-06-03T20:00:00.000Z	43 \| good	4.396 \| good	12.673 \| good	45.847 \| good	0.542 \| good	2.005 \| good	0.155 \| good
2025-06-03T21:00:00.000Z	38 \| good	4.071 \| good	15.311 \| good	41.033 \| good	0.635 \| good	2.104 \| good	0.169 \| good
2025-06-03T22:00:00.000Z	39 \| good	4.53 \| good	13.405 \| good	42.278 \| good	0.571 \| good	3.262 \| good	0.17 \| good
2025-06-03T23:00:00.000Z	43 \| good	4.497 \| good	8.736 \| good	45.544 \| good	0.572 \| good	3.721 \| good	0.211 \| good
2025-06-04T00:00:00.000Z	43 \| good	5.286 \| good	11.714 \| good	45.866 \| good	0.572 \| good	3.757 \| good	0.184 \| good
2025-06-04T01:00:00.000Z	44 \| good	5.666 \| good	12.958 \| good	46.716 \| good	0.514 \| good	8.586 \| good	0.211 \| good
2025-06-04T02:00:00.000Z	39 \| good	5.201 \| good	30.065 \| good	41.78 \| good	0.485 \| good	6.684 \| good	0.17 \| good
2025-06-04T03:00:00.000Z	49 \| good	9.272 \| good	41.134 \| good	29.639 \| good	0.208 \| good	3.655 \| good	0.132 \| good
2025-06-04T04:00:00.000Z	33 \| good	5.056 \| good	22.906 \| good	36.387 \| good	0.435 \| good	7.569 \| good	0.143 \| good
2025-06-04T05:00:00.000Z	33 \| good	5.818 \| good	22.548 \| good	34.437 \| good	0.507 \| good	6.871 \| good	0.143 \| good
2025-06-04T06:00:00.000Z	28 \| good	5.202 \| good	14.256 \| good	30.184 \| good	0.451 \| good	8.198 \| good	0.143 \| good
2025-06-04T07:00:00.000Z	49 \| good	8.501 \| good	27.306 \| good	34.37 \| good	0.45 \| good	6.38 \| good	0.129 \| good
2025-06-04T08:00:00.000Z	38 \| good	7.154 \| good	15.142 \| good	35.197 \| good	0.454 \| good	4.314 \| good	0.124 \| good
2025-06-04T09:00:00.000Z	38 \| good	6.678 \| good	14.975 \| good	33.557 \| good	0.421 \| good	4.328 \| good	0.138 \| good
2025-06-04T10:00:00.000Z	33 \| good	5.969 \| good	10.981 \| good	30.844 \| good	0.45 \| good	4.478 \| good	0.123 \| good
2025-06-04T11:00:00.000Z	38 \| good	7.138 \| good	11.246 \| good	31.2 \| good	0.522 \| good	6.205 \| good	0.138 \| good
2025-06-04T12:00:00.000Z	38 \| good	7.464 \| good	10.981 \| good	34.266 \| good	0.576 \| good	6.437 \| good	0.179 \| good
2025-06-04T13:00:00.000Z	49 \| good	9.028 \| good	40.562 \| good	24.596 \| good	0.457 \| good	1.779 \| good	0.141 \| good
2025-06-04T14:00:00.000Z	44 \| good	7.642 \| good	17.954 \| good	29.12 \| good	0.668 \| good	7.052 \| good	0.27 \| good
2025-06-04T15:00:00.000Z	44 \| good	7.642 \| good	17.954 \| good	29.12 \| good	0.668 \| good	7.052 \| good	0.27 \| good
2025-06-04T16:00:00.000Z	58 \| moderate	13.339 \| fine	60.743 \| fine	43.714 \| good	0.364 \| good	0.9 \| good	0.131 \| good
2025-06-04T17:00:00.000Z	62 \| moderate	15.288 \| fine	68.758 \| fine	49.655 \| good	0.349 \| good	0.957 \| good	0.133 \| good
2025-06-04T18:00:00.000Z	58 \| moderate	12.977 \| fine	58.544 \| fine	53.067 \| good	0.335 \| good	1.013 \| good	0.134 \| good
2025-06-04T19:00:00.000Z	56 \| moderate	11.799 \| good	53.248 \| good	56.183 \| fine	0.24 \| good	0.719 \| good	0.125 \| good
2025-06-04T20:00:00.000Z	58 \| moderate	11.238 \| good	49.675 \| good	57.297 \| fine	0.21 \| good	0.731 \| good	0.124 \| good
2025-06-04T21:00:00.000Z	56 \| moderate	11.798 \| good	51.935 \| good	56.387 \| fine	0.18 \| good	0.743 \| good	0.123 \| good
2025-06-04T22:00:00.000Z	56 \| moderate	11.607 \| good	51.596 \| good	54.965 \| good	0.314 \| good	1.464 \| good	0.131 \| good
2025-06-04T23:00:00.000Z	56 \| moderate	11.68 \| good	51.833 \| good	53.745 \| good	0.29 \| good	1.512 \| good	0.131 \| good
2025-06-05T00:00:00.000Z	54 \| moderate	10.835 \| good	47.697 \| good	48.24 \| good	0.266 \| good	1.56 \| good	0.13 \| good
2025-06-05T01:00:00.000Z	52 \| moderate	9.747 \| good	43.545 \| good	37.944 \| good	0.483 \| good	6.23 \| good	0.173 \| good
2025-06-05T02:00:00.000Z	32 \| good	4.397 \| good	19.533 \| good	35.288 \| good	0.474 \| good	6.772 \| good	0.177 \| good
2025-06-05T03:00:00.000Z	27 \| good	3.447 \| good	15.27 \| good	28.747 \| good	0.466 \| good	7.314 \| good	0.18 \| good
2025-06-05T04:00:00.000Z	23 \| good	2.548 \| good	10.461 \| good	24.87 \| good	0.519 \| good	10.072 \| good	0.206 \| good
2025-06-05T05:00:00.000Z	26 \| good	2.492 \| good	10.655 \| good	27.57 \| good	0.517 \| good	11.084 \| good	0.212 \| good
2025-06-05T06:00:00.000Z	27 \| good	4.527 \| good	19.397 \| good	26.007 \| good	0.515 \| good	12.095 \| good	0.217 \| good
2025-06-05T07:00:00.000Z	27 \| good	5.211 \| good	22.47 \| good	25.13 \| good	0.45 \| good	8.056 \| good	0.188 \| good
2025-06-05T08:00:00.000Z	27 \| good	4.746 \| good	20.662 \| good	25.788 \| good	0.444 \| good	8.932 \| good	0.191 \| good
2025-06-05T09:00:00.000Z	24 \| good	3.333 \| good	14.524 \| good	25.918 \| good	0.438 \| good	9.809 \| good	0.195 \| good
2025-06-05T10:00:00.000Z	22 \| good	3.156 \| good	13.589 \| good	23.977 \| good	0.28 \| good	5.993 \| good	0.169 \| good
2025-06-05T11:00:00.000Z	22 \| good	3.911 \| good	17.094 \| good	23.213 \| good	0.28 \| good	6.92 \| good	0.172 \| good
2025-06-05T12:00:00.000Z	22 \| good	3.932 \| good	17.203 \| good	23.357 \| good	0.279 \| good	7.847 \| good	0.175 \| good
2025-06-05T13:00:00.000Z	27 \| good	3.89 \| good	17.108 \| good	29.188 \| good	0.446 \| good	2 \| good	0.148 \| good
2025-06-05T14:00:00.000Z	33 \| good	4.247 \| good	18.432 \| good	35.651 \| good	0.444 \| good	2.34 \| good	0.151 \| good
2025-06-05T15:00:00.000Z	39 \| good	4.615 \| good	20.291 \| good	42.137 \| good	0.442 \| good	2.68 \| good	0.155 \| good
2025-06-05T16:00:00.000Z	44 \| good	6.068 \| good	26.864 \| good	48.302 \| good	0.314 \| good	0.78 \| good	0.134 \| good
2025-06-05T17:00:00.000Z	49 \| good	5.432 \| good	23.037 \| good	52.873 \| good	0.319 \| good	0.875 \| good	0.137 \| good
2025-06-05T18:00:00.000Z	51 \| moderate	5.571 \| good	24.042 \| good	54.556 \| good	0.323 \| good	0.97 \| good	0.14 \| good
2025-06-05T19:00:00.000Z	58 \| moderate	5.221 \| good	22.51 \| good	57.314 \| fine	0.186 \| good	0.875 \| good	0.129 \| good
2025-06-05T20:00:00.000Z	54 \| moderate	4.773 \| good	20.705 \| good	56.206 \| fine	0.191 \| good	0.936 \| good	0.13 \| good
2025-06-05T21:00:00.000Z	54 \| moderate	3.249 \| good	14.129 \| good	56.171 \| fine	0.195 \| good	0.996 \| good	0.132 \| good
2025-06-05T22:00:00.000Z	54 \| moderate	3.419 \| good	15.184 \| good	55.832 \| fine	0.236 \| good	1.373 \| good	0.135 \| good
2025-06-05T23:00:00.000Z	45 \| good	3.131 \| good	13.822 \| good	48.747 \| good	0.22 \| good	1.432 \| good	0.136 \| good
2025-06-06T00:00:00.000Z	38 \| good	4.511 \| good	19.76 \| good	40.924 \| good	0.204 \| good	1.492 \| good	0.136 \| good
2025-06-06T01:00:00.000Z	35 \| good	4.949 \| good	21.228 \| good	38.4 \| good	0.242 \| good	4.263 \| good	0.158 \| good
2025-06-06T02:00:00.000Z	33 \| good	6.329 \| good	28.015 \| good	35.447 \| good	0.23 \| good	4.481 \| good	0.159 \| good
2025-06-06T03:00:00.000Z	33 \| good	6.267 \| good	28.052 \| good	34.443 \| good	0.218 \| good	4.698 \| good	0.16 \| good
2025-06-06T04:00:00.000Z	31 \| good	5.473 \| good	23.07 \| good	33.172 \| good	0.321 \| good	8.121 \| good	0.191 \| good
2025-06-06T05:00:00.000Z	27 \| good	5.064 \| good	21.911 \| good	28.978 \| good	0.329 \| good	9.304 \| good	0.198 \| good
2025-06-06T06:00:00.000Z	26 \| good	3.218 \| good	14.007 \| good	28.406 \| good	0.336 \| good	10.488 \| good	0.205 \| good
2025-06-06T07:00:00.000Z	25 \| good	3.58 \| good	15.923 \| good	27.491 \| good	0.28 \| good	8.905 \| good	0.191 \| good
2025-06-06T08:00:00.000Z	27 \| good	4.752 \| good	20.856 \| good	25.096 \| good	0.3 \| good	10.464 \| good	0.199 \| good
2025-06-06T09:00:00.000Z	27 \| good	5.303 \| good	22.857 \| good	22.116 \| good	0.319 \| good	12.023 \| good	0.207 \| good
2025-06-06T10:00:00.000Z	27 \| good	5.101 \| good	21.857 \| good	20.315 \| good	0.223 \| good	7.091 \| good	0.176 \| good
2025-06-06T11:00:00.000Z	33 \| good	5.843 \| good	25.27 \| good	17.483 \| good	0.234 \| good	8.32 \| good	0.181 \| good
2025-06-06T12:00:00.000Z	38 \| good	6.629 \| good	29.809 \| good	18.16 \| good	0.246 \| good	9.549 \| good	0.187 \| good
2025-06-06T13:00:00.000Z	38 \| good	7.157 \| good	31.837 \| good	23.415 \| good	0.341 \| good	2.869 \| good	0.149 \| good
2025-06-06T14:00:00.000Z	38 \| good	6.685 \| good	29.918 \| good	30.308 \| good	0.296 \| good	3.094 \| good	0.149 \| good
2025-06-06T15:00:00.000Z	38 \| good	7.006 \| good	31.139 \| good	36.656 \| good	0.251 \| good	3.319 \| good	0.149 \| good

Johnstown

Get reliable air quality data to drive your business

Johnstown, Colorado air quality map: Track AQI near you

0.23ppm

How accurate is Colorado, USA air quality data?

Air quality data and pollutant measurements for Colorado, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.

Source: Ambee Data Sources

Air quality levels in US

Check live rankings of places in the USA affected by air pollution.

View Polluted Cities

Check live rankings of places in the USA with the cleanest air.

View Clean Cities

Frequently asked questions

How often is the air quality data for Johnstown, Colorado updated?

The air quality for Johnstown, Colorado is updated every hour.

When was the worst air quality at Johnstown, Colorado in the last 24 hrs?

The worst air quality in Johnstown, Colorado in the last 24 hours was observed at 01:00:00 on 2025-06-04.

When was the best air quality at Johnstown, Colorado in the last 24 hrs?

In the last 24 hrs, the best air quality in Johnstown, Colorado was observed at 06:00:00 on 2025-06-04.

What is the current air quality in Johnstown, Colorado?

The current air quality in Johnstown, Colorado is 44, categorized as Good based on real-time data.

What pollutant is the most common in Johnstown, Colorado?

The most common pollutant in Johnstown, Colorado is PM2.5.

What should I do if the air quality in Johnstown, Colorado is poor?

If the air quality in Johnstown, Colorado is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Johnstown, Colorado?

The current PM_2.5 concentration at Johnstown, Colorado is 7.642 μg/m³.

What is the current concentration of PM₁₀ in Johnstown, Colorado?

The current PM₁₀ concentration at Johnstown, Colorado is 17.954 μg/m³.

What is the current concentration of carbon monoxide (CO) in Johnstown, Colorado?

The current carbon monoxide (CO) concentration at Johnstown, Colorado is 0.27 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Johnstown, Colorado?

The current sulfur dioxide (SO₂) concentration at Johnstown, Colorado is 0.668 ppb.

What is the current concentration of ozone (O₃) in Johnstown, Colorado?

The current ozone (O₃) concentration at Johnstown, Colorado is 29.12 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Johnstown, Colorado?

The current nitrogen dioxide (NO₂) concentration at Johnstown, Colorado is 7.052 ppb.

Certified

APIs

Refund Policy

Historical Climate Data

Terms & Conditions

Refund Policy

Terms & Conditions

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-02T16:00:00.000Z	31 \| good	4.718 \| good	18.23 \| good	34.48 \| good	0.901 \| good	5.604 \| good	0.223 \| good
2025-06-02T17:00:00.000Z	37 \| good	4.921 \| good	23.188 \| good	40.269 \| good	0.815 \| good	7.06 \| good	0.229 \| good
2025-06-02T18:00:00.000Z	35 \| good	5.234 \| good	25.404 \| good	38.253 \| good	1.04 \| good	7.087 \| good	0.171 \| good
2025-06-02T19:00:00.000Z	45 \| good	5.649 \| good	29.708 \| good	49.072 \| good	1.179 \| good	7.794 \| good	0.171 \| good
2025-06-02T20:00:00.000Z	47 \| good	5.931 \| good	27.975 \| good	50.745 \| good	1.303 \| good	6.389 \| good	0.17 \| good
2025-06-02T21:00:00.000Z	48 \| good	5.998 \| good	34.969 \| good	51.603 \| good	1.211 \| good	5.906 \| good	0.146 \| good
2025-06-02T22:00:00.000Z	49 \| good	6.179 \| good	32.161 \| good	52.853 \| good	1.095 \| good	9.623 \| good	0.222 \| good
2025-06-02T23:00:00.000Z	48 \| good	5.796 \| good	25.793 \| good	52.172 \| good	1.012 \| good	7.687 \| good	0.194 \| good
2025-06-03T00:00:00.000Z	46 \| good	4.629 \| good	28.701 \| good	50.02 \| good	1.086 \| good	4.635 \| good	0.249 \| good
2025-06-03T01:00:00.000Z	40 \| good	5.553 \| good	27.319 \| good	43.18 \| good	0.728 \| good	5.103 \| good	0.184 \| good
2025-06-03T02:00:00.000Z	46 \| good	6.114 \| good	33.038 \| good	49.548 \| good	0.797 \| good	4.206 \| good	0.156 \| good
2025-06-03T03:00:00.000Z	46 \| good	6.344 \| good	50.035 \| good	43.031 \| good	0.727 \| good	2.791 \| good	0.179 \| good
2025-06-03T04:00:00.000Z	42 \| good	5.397 \| good	43.993 \| good	45.338 \| good	0.606 \| good	2.118 \| good	0.137 \| good
2025-06-03T05:00:00.000Z	39 \| good	3.694 \| good	14.224 \| good	42.206 \| good	0.581 \| good	1.771 \| good	0.152 \| good
2025-06-03T06:00:00.000Z	39 \| good	4.227 \| good	17.546 \| good	42.227 \| good	0.553 \| good	1.49 \| good	0.138 \| good
2025-06-03T07:00:00.000Z	37 \| good	4.445 \| good	12.631 \| good	40.159 \| good	0.482 \| good	1.645 \| good	0.138 \| good
2025-06-03T08:00:00.000Z	33 \| good	3.739 \| good	26.759 \| good	35.826 \| good	0.551 \| good	1.36 \| good	0.129 \| good
2025-06-03T09:00:00.000Z	32 \| good	2.702 \| good	5.414 \| good	35.203 \| good	0.518 \| good	1.377 \| good	0.1 \| good
2025-06-03T10:00:00.000Z	32 \| good	2.899 \| good	5.255 \| good	35.086 \| good	0.436 \| good	1.744 \| good	0.1 \| good
2025-06-03T11:00:00.000Z	35 \| good	1.859 \| good	4.224 \| good	37.904 \| good	0.447 \| good	1.442 \| good	0.114 \| good
2025-06-03T12:00:00.000Z	34 \| good	2.638 \| good	4.382 \| good	37.473 \| good	0.481 \| good	3.028 \| good	0.141 \| good
2025-06-03T13:00:00.000Z	34 \| good	2.37 \| good	4.077 \| good	37.376 \| good	0.451 \| good	4.947 \| good	0.198 \| good
2025-06-03T14:00:00.000Z	37 \| good	1.998 \| good	7.81 \| good	40.001 \| good	0.487 \| good	3.873 \| good	0.184 \| good
2025-06-03T15:00:00.000Z	37 \| good	1.512 \| good	4.524 \| good	39.543 \| good	0.479 \| good	2.252 \| good	0.156 \| good
2025-06-03T16:00:00.000Z	37 \| good	2.092 \| good	5.054 \| good	40.078 \| good	0.477 \| good	3.673 \| good	0.156 \| good
2025-06-03T17:00:00.000Z	38 \| good	2.623 \| good	5.04 \| good	41.124 \| good	0.442 \| good	2.846 \| good	0.141 \| good
2025-06-03T18:00:00.000Z	41 \| good	3.232 \| good	10.249 \| good	43.858 \| good	0.51 \| good	2.047 \| good	0.141 \| good
2025-06-03T19:00:00.000Z	41 \| good	3.524 \| good	19.467 \| good	43.775 \| good	0.571 \| good	3.429 \| good	0.114 \| good
2025-06-03T20:00:00.000Z	43 \| good	4.396 \| good	12.673 \| good	45.847 \| good	0.542 \| good	2.005 \| good	0.155 \| good
2025-06-03T21:00:00.000Z	38 \| good	4.071 \| good	15.311 \| good	41.033 \| good	0.635 \| good	2.104 \| good	0.169 \| good
2025-06-03T22:00:00.000Z	39 \| good	4.53 \| good	13.405 \| good	42.278 \| good	0.571 \| good	3.262 \| good	0.17 \| good
2025-06-03T23:00:00.000Z	43 \| good	4.497 \| good	8.736 \| good	45.544 \| good	0.572 \| good	3.721 \| good	0.211 \| good
2025-06-04T00:00:00.000Z	43 \| good	5.286 \| good	11.714 \| good	45.866 \| good	0.572 \| good	3.757 \| good	0.184 \| good
2025-06-04T01:00:00.000Z	44 \| good	5.666 \| good	12.958 \| good	46.716 \| good	0.514 \| good	8.586 \| good	0.211 \| good
2025-06-04T02:00:00.000Z	39 \| good	5.201 \| good	30.065 \| good	41.78 \| good	0.485 \| good	6.684 \| good	0.17 \| good
2025-06-04T03:00:00.000Z	49 \| good	9.272 \| good	41.134 \| good	29.639 \| good	0.208 \| good	3.655 \| good	0.132 \| good
2025-06-04T04:00:00.000Z	33 \| good	5.056 \| good	22.906 \| good	36.387 \| good	0.435 \| good	7.569 \| good	0.143 \| good
2025-06-04T05:00:00.000Z	33 \| good	5.818 \| good	22.548 \| good	34.437 \| good	0.507 \| good	6.871 \| good	0.143 \| good
2025-06-04T06:00:00.000Z	28 \| good	5.202 \| good	14.256 \| good	30.184 \| good	0.451 \| good	8.198 \| good	0.143 \| good
2025-06-04T07:00:00.000Z	49 \| good	8.501 \| good	27.306 \| good	34.37 \| good	0.45 \| good	6.38 \| good	0.129 \| good
2025-06-04T08:00:00.000Z	38 \| good	7.154 \| good	15.142 \| good	35.197 \| good	0.454 \| good	4.314 \| good	0.124 \| good
2025-06-04T09:00:00.000Z	38 \| good	6.678 \| good	14.975 \| good	33.557 \| good	0.421 \| good	4.328 \| good	0.138 \| good
2025-06-04T10:00:00.000Z	33 \| good	5.969 \| good	10.981 \| good	30.844 \| good	0.45 \| good	4.478 \| good	0.123 \| good
2025-06-04T11:00:00.000Z	38 \| good	7.138 \| good	11.246 \| good	31.2 \| good	0.522 \| good	6.205 \| good	0.138 \| good
2025-06-04T12:00:00.000Z	38 \| good	7.464 \| good	10.981 \| good	34.266 \| good	0.576 \| good	6.437 \| good	0.179 \| good
2025-06-04T13:00:00.000Z	49 \| good	9.028 \| good	40.562 \| good	24.596 \| good	0.457 \| good	1.779 \| good	0.141 \| good
2025-06-04T14:00:00.000Z	44 \| good	7.642 \| good	17.954 \| good	29.12 \| good	0.668 \| good	7.052 \| good	0.27 \| good
2025-06-04T15:00:00.000Z	44 \| good	7.642 \| good	17.954 \| good	29.12 \| good	0.668 \| good	7.052 \| good	0.27 \| good
2025-06-04T16:00:00.000Z	58 \| moderate	13.339 \| fine	60.743 \| fine	43.714 \| good	0.364 \| good	0.9 \| good	0.131 \| good
2025-06-04T17:00:00.000Z	62 \| moderate	15.288 \| fine	68.758 \| fine	49.655 \| good	0.349 \| good	0.957 \| good	0.133 \| good
2025-06-04T18:00:00.000Z	58 \| moderate	12.977 \| fine	58.544 \| fine	53.067 \| good	0.335 \| good	1.013 \| good	0.134 \| good
2025-06-04T19:00:00.000Z	56 \| moderate	11.799 \| good	53.248 \| good	56.183 \| fine	0.24 \| good	0.719 \| good	0.125 \| good
2025-06-04T20:00:00.000Z	58 \| moderate	11.238 \| good	49.675 \| good	57.297 \| fine	0.21 \| good	0.731 \| good	0.124 \| good
2025-06-04T21:00:00.000Z	56 \| moderate	11.798 \| good	51.935 \| good	56.387 \| fine	0.18 \| good	0.743 \| good	0.123 \| good
2025-06-04T22:00:00.000Z	56 \| moderate	11.607 \| good	51.596 \| good	54.965 \| good	0.314 \| good	1.464 \| good	0.131 \| good
2025-06-04T23:00:00.000Z	56 \| moderate	11.68 \| good	51.833 \| good	53.745 \| good	0.29 \| good	1.512 \| good	0.131 \| good
2025-06-05T00:00:00.000Z	54 \| moderate	10.835 \| good	47.697 \| good	48.24 \| good	0.266 \| good	1.56 \| good	0.13 \| good
2025-06-05T01:00:00.000Z	52 \| moderate	9.747 \| good	43.545 \| good	37.944 \| good	0.483 \| good	6.23 \| good	0.173 \| good
2025-06-05T02:00:00.000Z	32 \| good	4.397 \| good	19.533 \| good	35.288 \| good	0.474 \| good	6.772 \| good	0.177 \| good
2025-06-05T03:00:00.000Z	27 \| good	3.447 \| good	15.27 \| good	28.747 \| good	0.466 \| good	7.314 \| good	0.18 \| good
2025-06-05T04:00:00.000Z	23 \| good	2.548 \| good	10.461 \| good	24.87 \| good	0.519 \| good	10.072 \| good	0.206 \| good
2025-06-05T05:00:00.000Z	26 \| good	2.492 \| good	10.655 \| good	27.57 \| good	0.517 \| good	11.084 \| good	0.212 \| good
2025-06-05T06:00:00.000Z	27 \| good	4.527 \| good	19.397 \| good	26.007 \| good	0.515 \| good	12.095 \| good	0.217 \| good
2025-06-05T07:00:00.000Z	27 \| good	5.211 \| good	22.47 \| good	25.13 \| good	0.45 \| good	8.056 \| good	0.188 \| good
2025-06-05T08:00:00.000Z	27 \| good	4.746 \| good	20.662 \| good	25.788 \| good	0.444 \| good	8.932 \| good	0.191 \| good
2025-06-05T09:00:00.000Z	24 \| good	3.333 \| good	14.524 \| good	25.918 \| good	0.438 \| good	9.809 \| good	0.195 \| good
2025-06-05T10:00:00.000Z	22 \| good	3.156 \| good	13.589 \| good	23.977 \| good	0.28 \| good	5.993 \| good	0.169 \| good
2025-06-05T11:00:00.000Z	22 \| good	3.911 \| good	17.094 \| good	23.213 \| good	0.28 \| good	6.92 \| good	0.172 \| good
2025-06-05T12:00:00.000Z	22 \| good	3.932 \| good	17.203 \| good	23.357 \| good	0.279 \| good	7.847 \| good	0.175 \| good
2025-06-05T13:00:00.000Z	27 \| good	3.89 \| good	17.108 \| good	29.188 \| good	0.446 \| good	2 \| good	0.148 \| good
2025-06-05T14:00:00.000Z	33 \| good	4.247 \| good	18.432 \| good	35.651 \| good	0.444 \| good	2.34 \| good	0.151 \| good
2025-06-05T15:00:00.000Z	39 \| good	4.615 \| good	20.291 \| good	42.137 \| good	0.442 \| good	2.68 \| good	0.155 \| good
2025-06-05T16:00:00.000Z	44 \| good	6.068 \| good	26.864 \| good	48.302 \| good	0.314 \| good	0.78 \| good	0.134 \| good
2025-06-05T17:00:00.000Z	49 \| good	5.432 \| good	23.037 \| good	52.873 \| good	0.319 \| good	0.875 \| good	0.137 \| good
2025-06-05T18:00:00.000Z	51 \| moderate	5.571 \| good	24.042 \| good	54.556 \| good	0.323 \| good	0.97 \| good	0.14 \| good
2025-06-05T19:00:00.000Z	58 \| moderate	5.221 \| good	22.51 \| good	57.314 \| fine	0.186 \| good	0.875 \| good	0.129 \| good
2025-06-05T20:00:00.000Z	54 \| moderate	4.773 \| good	20.705 \| good	56.206 \| fine	0.191 \| good	0.936 \| good	0.13 \| good
2025-06-05T21:00:00.000Z	54 \| moderate	3.249 \| good	14.129 \| good	56.171 \| fine	0.195 \| good	0.996 \| good	0.132 \| good
2025-06-05T22:00:00.000Z	54 \| moderate	3.419 \| good	15.184 \| good	55.832 \| fine	0.236 \| good	1.373 \| good	0.135 \| good
2025-06-05T23:00:00.000Z	45 \| good	3.131 \| good	13.822 \| good	48.747 \| good	0.22 \| good	1.432 \| good	0.136 \| good
2025-06-06T00:00:00.000Z	38 \| good	4.511 \| good	19.76 \| good	40.924 \| good	0.204 \| good	1.492 \| good	0.136 \| good
2025-06-06T01:00:00.000Z	35 \| good	4.949 \| good	21.228 \| good	38.4 \| good	0.242 \| good	4.263 \| good	0.158 \| good
2025-06-06T02:00:00.000Z	33 \| good	6.329 \| good	28.015 \| good	35.447 \| good	0.23 \| good	4.481 \| good	0.159 \| good
2025-06-06T03:00:00.000Z	33 \| good	6.267 \| good	28.052 \| good	34.443 \| good	0.218 \| good	4.698 \| good	0.16 \| good
2025-06-06T04:00:00.000Z	31 \| good	5.473 \| good	23.07 \| good	33.172 \| good	0.321 \| good	8.121 \| good	0.191 \| good
2025-06-06T05:00:00.000Z	27 \| good	5.064 \| good	21.911 \| good	28.978 \| good	0.329 \| good	9.304 \| good	0.198 \| good
2025-06-06T06:00:00.000Z	26 \| good	3.218 \| good	14.007 \| good	28.406 \| good	0.336 \| good	10.488 \| good	0.205 \| good
2025-06-06T07:00:00.000Z	25 \| good	3.58 \| good	15.923 \| good	27.491 \| good	0.28 \| good	8.905 \| good	0.191 \| good
2025-06-06T08:00:00.000Z	27 \| good	4.752 \| good	20.856 \| good	25.096 \| good	0.3 \| good	10.464 \| good	0.199 \| good
2025-06-06T09:00:00.000Z	27 \| good	5.303 \| good	22.857 \| good	22.116 \| good	0.319 \| good	12.023 \| good	0.207 \| good
2025-06-06T10:00:00.000Z	27 \| good	5.101 \| good	21.857 \| good	20.315 \| good	0.223 \| good	7.091 \| good	0.176 \| good
2025-06-06T11:00:00.000Z	33 \| good	5.843 \| good	25.27 \| good	17.483 \| good	0.234 \| good	8.32 \| good	0.181 \| good
2025-06-06T12:00:00.000Z	38 \| good	6.629 \| good	29.809 \| good	18.16 \| good	0.246 \| good	9.549 \| good	0.187 \| good
2025-06-06T13:00:00.000Z	38 \| good	7.157 \| good	31.837 \| good	23.415 \| good	0.341 \| good	2.869 \| good	0.149 \| good
2025-06-06T14:00:00.000Z	38 \| good	6.685 \| good	29.918 \| good	30.308 \| good	0.296 \| good	3.094 \| good	0.149 \| good
2025-06-06T15:00:00.000Z	38 \| good	7.006 \| good	31.139 \| good	36.656 \| good	0.251 \| good	3.319 \| good	0.149 \| good

Live air quality index in Johnstown, Colorado today

Major air pollutants in Johnstown, Colorado

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Johnstown, Colorado air quality forecast and history

Get reliable air quality data to drive your business

Johnstown, Colorado air quality map: Track AQI near you

Air quality in nearby cities

Berthoud, Colorado

Loveland, Colorado

Windsor, Colorado

Evans, Colorado

Greeley, Colorado

Severance, Colorado

How accurate is Colorado, USA air quality data?

Air quality levels in US

Frequently asked questions

How often is the air quality data for Johnstown, Colorado updated?

When was the worst air quality at Johnstown, Colorado in the last 24 hrs?

When was the best air quality at Johnstown, Colorado in the last 24 hrs?

What is the current air quality in Johnstown, Colorado?

What pollutant is the most common in Johnstown, Colorado?

What should I do if the air quality in Johnstown, Colorado is poor?

What is the current concentration of PM2.5 in Johnstown, Colorado?

What is the current concentration of PM10 in Johnstown, Colorado?

What is the current concentration of carbon monoxide (CO) in Johnstown, Colorado?

What is the current concentration of sulfur dioxide (SO2) in Johnstown, Colorado?

What is the current concentration of ozone (O3) in Johnstown, Colorado?

What is the current concentration of nitrogen dioxide (NO2) in Johnstown, Colorado?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the current concentration of PM_2.5 in Johnstown, Colorado?

What is the current concentration of PM₁₀ in Johnstown, Colorado?

What is the current concentration of sulfur dioxide (SO₂) in Johnstown, Colorado?

What is the current concentration of ozone (O₃) in Johnstown, Colorado?

What is the current concentration of nitrogen dioxide (NO₂) in Johnstown, Colorado?