What is the current concentration of PM10 in Mchenry, Illinois?

The current PM10 concentration at Mchenry, Illinois is 63.954 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Mchenry, Illinois?

The current sulfur dioxide (SO2) concentration at Mchenry, Illinois is 0.776 ppb.

What is the current concentration of ozone (O3) in Mchenry, Illinois?

The current ozone (O3) concentration at Mchenry, Illinois is 61.21 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Mchenry, Illinois?

The current nitrogen dioxide (NO2) concentration at Mchenry, Illinois is 1.948 ppb.

McHenry, Illinois live air quality index now

Name: Live air pollution levels in Mchenry, Illinois today
Creator: Ambee

Stay updated with real-time air quality in McHenry, Illinois 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

McHenry, Illinois

Last updated: ... (Local time)

Major air pollutants in McHenry, Illinois

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

16.66 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

66.30 μg/m³

155

255

425

605+

Ozone (O₃)

39.94 ppb

201

201+

Sulfur Dioxide (SO₂)

1.27 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

8.20 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.41 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

McHenry, Illinois

Get Live Pollen Counts

McHenry, Illinois

Scroll To Air Quality Map

Track live McHenry, Illinois air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-21T13:00:00.000Z	142 \| sensitive	52.072 \| moderate	146.347 \| fine	25.236 \| good	0.822 \| good	5.465 \| good	0.17 \| good
2025-07-21T14:00:00.000Z	132 \| sensitive	48.387 \| moderate	153.489 \| fine	23.2 \| good	0.784 \| good	3.033 \| good	0.146 \| good
2025-07-21T15:00:00.000Z	117 \| sensitive	41.04 \| moderate	186.846 \| moderate	24.443 \| good	1.628 \| good	2.929 \| good	0.146 \| good
2025-07-21T16:00:00.000Z	114 \| sensitive	36.904 \| moderate	181.082 \| moderate	27.55 \| good	1.676 \| good	1.791 \| good	0.134 \| good
2025-07-21T17:00:00.000Z	96 \| moderate	33.392 \| fine	130.909 \| fine	29.13 \| good	0.904 \| good	1.488 \| good	0.134 \| good
2025-07-21T18:00:00.000Z	82 \| moderate	25.833 \| fine	58.804 \| fine	38.84 \| good	0.801 \| good	1.854 \| good	0.162 \| good
2025-07-21T19:00:00.000Z	81 \| moderate	25.483 \| fine	97.269 \| fine	42.515 \| good	0.971 \| good	2.117 \| good	0.197 \| good
2025-07-21T20:00:00.000Z	82 \| moderate	26.352 \| fine	115.388 \| fine	43.656 \| good	0.716 \| good	1.56 \| good	0.197 \| good
2025-07-21T21:00:00.000Z	83 \| moderate	25.595 \| fine	119.829 \| fine	49.666 \| good	1.371 \| good	1.745 \| good	0.22 \| good
2025-07-21T22:00:00.000Z	86 \| moderate	28.171 \| fine	103.782 \| fine	43.317 \| good	1.481 \| good	2.003 \| good	0.247 \| good
2025-07-21T23:00:00.000Z	79 \| moderate	24.292 \| fine	82.306 \| fine	48.278 \| good	0.921 \| good	1.556 \| good	0.256 \| good
2025-07-22T00:00:00.000Z	73 \| moderate	20.575 \| fine	52.712 \| good	45.221 \| good	0.923 \| good	1.881 \| good	0.28 \| good
2025-07-22T01:00:00.000Z	84 \| moderate	26.968 \| fine	115.596 \| fine	45.383 \| good	1.337 \| good	2.63 \| good	0.309 \| good
2025-07-22T02:00:00.000Z	84 \| moderate	27.31 \| fine	107.601 \| fine	41.014 \| good	1.153 \| good	3.414 \| good	0.296 \| good
2025-07-22T03:00:00.000Z	49 \| good	9.137 \| good	40.467 \| good	30.592 \| good	0.827 \| good	6.507 \| good	0.251 \| good
2025-07-22T04:00:00.000Z	91 \| moderate	28.476 \| fine	135.476 \| fine	34.61 \| good	0.42 \| good	6.1 \| good	0.212 \| good
2025-07-22T05:00:00.000Z	86 \| moderate	27.622 \| fine	81.476 \| fine	32.818 \| good	0.536 \| good	7.796 \| good	0.163 \| good
2025-07-22T06:00:00.000Z	75 \| moderate	22.211 \| fine	45.888 \| good	28.938 \| good	0.701 \| good	9.562 \| good	0.148 \| good
2025-07-22T07:00:00.000Z	66 \| moderate	17.334 \| fine	65.188 \| fine	28.247 \| good	0.592 \| good	8.975 \| good	0.123 \| good
2025-07-22T08:00:00.000Z	75 \| moderate	21.765 \| fine	64.276 \| fine	26.026 \| good	0.458 \| good	12.849 \| good	0.123 \| good
2025-07-22T09:00:00.000Z	73 \| moderate	20.723 \| fine	84.972 \| fine	21.077 \| good	0.279 \| good	11.948 \| good	0.112 \| good
2025-07-22T10:00:00.000Z	77 \| moderate	22.935 \| fine	78.187 \| fine	19.444 \| good	0.317 \| good	9.648 \| good	0.123 \| good
2025-07-22T11:00:00.000Z	70 \| moderate	18.74 \| fine	93.288 \| fine	18.591 \| good	0.487 \| good	7.14 \| good	0.176 \| good
2025-07-22T12:00:00.000Z	82 \| moderate	26.273 \| fine	92.299 \| fine	18.899 \| good	0.526 \| good	7.329 \| good	0.176 \| good
2025-07-22T13:00:00.000Z	88 \| moderate	29.042 \| fine	128.434 \| fine	20.067 \| good	0.318 \| good	7.012 \| good	0.176 \| good
2025-07-22T14:00:00.000Z	75 \| moderate	22.252 \| fine	96.745 \| fine	20.963 \| good	0.754 \| good	4.319 \| good	0.184 \| good
2025-07-22T15:00:00.000Z	81 \| moderate	25.212 \| fine	111.418 \| fine	24.621 \| good	0.846 \| good	5.282 \| good	0.225 \| good
2025-07-22T16:00:00.000Z	88 \| moderate	28.536 \| fine	71.165 \| fine	34.064 \| good	1.16 \| good	3.977 \| good	0.216 \| good
2025-07-22T17:00:00.000Z	93 \| moderate	30.894 \| fine	139.495 \| fine	41.9 \| good	1.094 \| good	2.291 \| good	0.216 \| good
2025-07-22T18:00:00.000Z	90 \| moderate	30.309 \| fine	110.655 \| fine	49.758 \| good	1.101 \| good	2.441 \| good	0.204 \| good
2025-07-22T19:00:00.000Z	90 \| moderate	30.313 \| fine	132.761 \| fine	55.438 \| fine	0.974 \| good	2.088 \| good	0.252 \| good
2025-07-22T20:00:00.000Z	84 \| moderate	27.019 \| fine	80.54 \| fine	63.887 \| fine	0.84 \| good	1.83 \| good	0.273 \| good
2025-07-22T21:00:00.000Z	93 \| moderate	27.327 \| fine	77.077 \| fine	68.149 \| fine	0.741 \| good	1.851 \| good	0.395 \| good
2025-07-22T22:00:00.000Z	101 \| sensitive	23.453 \| fine	62.425 \| fine	70.644 \| fine	0.779 \| good	1.848 \| good	0.527 \| good
2025-07-22T23:00:00.000Z	73 \| moderate	21.423 \| fine	71.272 \| fine	60.127 \| fine	0.737 \| good	1.859 \| good	0.614 \| good
2025-07-23T00:00:00.000Z	79 \| moderate	23.945 \| fine	63.954 \| fine	61.21 \| fine	0.776 \| good	1.948 \| good	0.564 \| good
2025-07-23T01:00:00.000Z	87 \| moderate	22.23 \| fine	92.338 \| fine	65.547 \| fine	0.702 \| good	2.557 \| good	0.541 \| good
2025-07-23T02:00:00.000Z	77 \| moderate	22.802 \| fine	89.214 \| fine	57.71 \| fine	0.667 \| good	4.913 \| good	0.577 \| good
2025-07-23T03:00:00.000Z	71 \| moderate	20.38 \| fine	90.32 \| fine	50.433 \| good	0.586 \| good	5.715 \| good	0.588 \| good
2025-07-23T04:00:00.000Z	73 \| moderate	20.955 \| fine	83.291 \| fine	48.657 \| good	0.583 \| good	4.279 \| good	0.491 \| good
2025-07-23T05:00:00.000Z	71 \| moderate	19.926 \| fine	57.15 \| fine	47.497 \| good	0.568 \| good	4.379 \| good	0.491 \| good
2025-07-23T06:00:00.000Z	71 \| moderate	19.617 \| fine	76.009 \| fine	46.454 \| good	0.929 \| good	6.133 \| good	0.492 \| good
2025-07-23T07:00:00.000Z	69 \| moderate	18.974 \| fine	70.285 \| fine	44.694 \| good	2.249 \| good	5.162 \| good	0.468 \| good
2025-07-23T08:00:00.000Z	69 \| moderate	19.457 \| fine	84.583 \| fine	43.083 \| good	3.119 \| good	6.026 \| good	0.411 \| good
2025-07-23T09:00:00.000Z	69 \| moderate	18.832 \| fine	82.897 \| fine	41.762 \| good	2.308 \| good	5.467 \| good	0.411 \| good
2025-07-23T10:00:00.000Z	67 \| moderate	17.566 \| fine	65.033 \| fine	43.108 \| good	1.949 \| good	10.171 \| good	0.411 \| good
2025-07-23T11:00:00.000Z	66 \| moderate	16.659 \| fine	66.302 \| fine	39.936 \| good	1.268 \| good	8.196 \| good	0.411 \| good
2025-07-23T12:00:00.000Z	66 \| moderate	16.659 \| fine	66.302 \| fine	39.936 \| good	1.268 \| good	8.196 \| good	0.411 \| good
2025-07-23T01:00:00.000Z	60 \| moderate	14.385 \| fine	64.121 \| fine	48.404 \| good	1.622 \| good	5.328 \| good	0.248 \| good
2025-07-23T02:00:00.000Z	58 \| moderate	13.221 \| fine	59.72 \| fine	40.599 \| good	1.756 \| good	6.94 \| good	0.258 \| good
2025-07-23T03:00:00.000Z	64 \| moderate	15.796 \| fine	69.65 \| fine	34.94 \| good	1.891 \| good	8.552 \| good	0.267 \| good
2025-07-23T04:00:00.000Z	67 \| moderate	17.89 \| fine	79.268 \| fine	31.955 \| good	1.979 \| good	8.322 \| good	0.264 \| good
2025-07-23T05:00:00.000Z	67 \| moderate	17.714 \| fine	79.078 \| fine	31.946 \| good	2.068 \| good	8.092 \| good	0.261 \| good
2025-07-23T06:00:00.000Z	66 \| moderate	17.082 \| fine	75.5 \| fine	31.357 \| good	2.157 \| good	7.861 \| good	0.258 \| good
2025-07-23T07:00:00.000Z	66 \| moderate	16.786 \| fine	74.058 \| fine	29.825 \| good	2.052 \| good	7.264 \| good	0.253 \| good
2025-07-23T08:00:00.000Z	64 \| moderate	16.496 \| fine	73.476 \| fine	28.541 \| good	1.948 \| good	6.668 \| good	0.248 \| good
2025-07-23T09:00:00.000Z	66 \| moderate	17.105 \| fine	75.596 \| fine	29.102 \| good	1.843 \| good	6.071 \| good	0.243 \| good
2025-07-23T10:00:00.000Z	69 \| moderate	18.984 \| fine	83.631 \| fine	27.39 \| good	1.803 \| good	5.909 \| good	0.242 \| good
2025-07-23T11:00:00.000Z	71 \| moderate	19.785 \| fine	86.956 \| fine	23.62 \| good	1.763 \| good	5.747 \| good	0.241 \| good
2025-07-23T12:00:00.000Z	77 \| moderate	23.019 \| fine	100.522 \| fine	25.967 \| good	1.723 \| good	5.585 \| good	0.24 \| good
2025-07-23T13:00:00.000Z	79 \| moderate	24.129 \| fine	105.653 \| fine	30.617 \| good	2.23 \| good	4.867 \| good	0.241 \| good
2025-07-23T14:00:00.000Z	77 \| moderate	22.682 \| fine	99.656 \| fine	34.07 \| good	2.738 \| good	4.149 \| good	0.242 \| good
2025-07-23T15:00:00.000Z	73 \| moderate	20.889 \| fine	91.871 \| fine	37.919 \| good	3.245 \| good	3.431 \| good	0.244 \| good
2025-07-23T16:00:00.000Z	69 \| moderate	18.801 \| fine	82.453 \| fine	40.021 \| good	3.088 \| good	2.722 \| good	0.232 \| good
2025-07-23T17:00:00.000Z	67 \| moderate	17.706 \| fine	78.485 \| fine	42.38 \| good	2.932 \| good	2.013 \| good	0.219 \| good
2025-07-23T18:00:00.000Z	69 \| moderate	18.87 \| fine	82.668 \| fine	44.43 \| good	2.775 \| good	1.305 \| good	0.207 \| good
2025-07-23T19:00:00.000Z	69 \| moderate	19.044 \| fine	84.318 \| fine	45.687 \| good	2.355 \| good	1.299 \| good	0.201 \| good
2025-07-23T20:00:00.000Z	69 \| moderate	18.906 \| fine	83.891 \| fine	46.242 \| good	1.935 \| good	1.293 \| good	0.194 \| good
2025-07-23T21:00:00.000Z	69 \| moderate	18.884 \| fine	83.891 \| fine	46.691 \| good	1.515 \| good	1.287 \| good	0.187 \| good
2025-07-23T22:00:00.000Z	71 \| moderate	19.838 \| fine	86.668 \| fine	47.622 \| good	1.464 \| good	1.951 \| good	0.191 \| good
2025-07-23T23:00:00.000Z	73 \| moderate	21.32 \| fine	94.154 \| fine	46.15 \| good	1.413 \| good	2.616 \| good	0.196 \| good
2025-07-24T00:00:00.000Z	67 \| moderate	17.649 \| fine	78.283 \| fine	41.84 \| good	1.362 \| good	3.28 \| good	0.2 \| good
2025-07-24T01:00:00.000Z	60 \| moderate	14.055 \| fine	63 \| fine	39.188 \| good	1.421 \| good	4.057 \| good	0.206 \| good
2025-07-24T02:00:00.000Z	58 \| moderate	13.3 \| fine	59.591 \| fine	36.909 \| good	1.48 \| good	4.833 \| good	0.211 \| good
2025-07-24T03:00:00.000Z	62 \| moderate	15.058 \| fine	66.998 \| fine	34.326 \| good	1.539 \| good	5.609 \| good	0.217 \| good
2025-07-24T04:00:00.000Z	66 \| moderate	16.829 \| fine	74.874 \| fine	33.495 \| good	1.425 \| good	5.476 \| good	0.214 \| good
2025-07-24T05:00:00.000Z	64 \| moderate	16.298 \| fine	72.811 \| fine	29.733 \| good	1.312 \| good	5.343 \| good	0.211 \| good
2025-07-24T06:00:00.000Z	64 \| moderate	15.984 \| fine	71.081 \| fine	31.212 \| good	1.198 \| good	5.209 \| good	0.208 \| good
2025-07-24T07:00:00.000Z	67 \| moderate	17.937 \| fine	79.244 \| fine	30.311 \| good	1.1 \| good	4.93 \| good	0.206 \| good
2025-07-24T08:00:00.000Z	69 \| moderate	19.053 \| fine	84.811 \| fine	29.099 \| good	1.002 \| good	4.651 \| good	0.205 \| good
2025-07-24T09:00:00.000Z	73 \| moderate	21.217 \| fine	93.114 \| fine	30.171 \| good	0.904 \| good	4.371 \| good	0.203 \| good
2025-07-24T10:00:00.000Z	69 \| moderate	19.367 \| fine	85.187 \| fine	28.567 \| good	1.062 \| good	4.419 \| good	0.205 \| good
2025-07-24T11:00:00.000Z	73 \| moderate	21.353 \| fine	94.254 \| fine	28.591 \| good	1.221 \| good	4.466 \| good	0.207 \| good
2025-07-24T12:00:00.000Z	75 \| moderate	21.782 \| fine	96.129 \| fine	27.451 \| good	1.379 \| good	4.514 \| good	0.208 \| good
2025-07-24T13:00:00.000Z	73 \| moderate	20.618 \| fine	90.448 \| fine	31.047 \| good	1.454 \| good	3.876 \| good	0.21 \| good
2025-07-24T14:00:00.000Z	67 \| moderate	17.803 \| fine	78.514 \| fine	36.913 \| good	1.529 \| good	3.238 \| good	0.211 \| good
2025-07-24T15:00:00.000Z	58 \| moderate	13.38 \| fine	60.321 \| fine	38.88 \| good	1.604 \| good	2.6 \| good	0.213 \| good
2025-07-24T16:00:00.000Z	54 \| moderate	11.456 \| good	50.625 \| good	41.448 \| good	1.344 \| good	2.123 \| good	0.202 \| good
2025-07-24T17:00:00.000Z	54 \| moderate	10.585 \| good	46.61 \| good	39.447 \| good	1.085 \| good	1.647 \| good	0.191 \| good
2025-07-24T18:00:00.000Z	54 \| moderate	10.733 \| good	47.305 \| good	41.37 \| good	0.825 \| good	1.17 \| good	0.181 \| good
2025-07-24T19:00:00.000Z	52 \| moderate	10.382 \| good	45.834 \| good	44.064 \| good	0.732 \| good	1.175 \| good	0.177 \| good
2025-07-24T20:00:00.000Z	52 \| moderate	10.459 \| good	46.639 \| good	44.056 \| good	0.638 \| good	1.18 \| good	0.173 \| good
2025-07-24T21:00:00.000Z	52 \| moderate	9.889 \| good	43.973 \| good	41.526 \| good	0.544 \| good	1.185 \| good	0.169 \| good
2025-07-24T22:00:00.000Z	52 \| moderate	9.894 \| good	44.049 \| good	40.556 \| good	0.562 \| good	1.723 \| good	0.175 \| good
2025-07-24T23:00:00.000Z	49 \| good	9.254 \| good	41.306 \| good	36.787 \| good	0.58 \| good	2.261 \| good	0.182 \| good
2025-07-25T00:00:00.000Z	74 \| moderate	5.255 \| good	6.174 \| good	61.867 \| fine	0.589 \| good	2.751 \| good	0.188 \| good

McHenry

Get reliable air quality data to drive your business

McHenry, Illinois air quality map: Track AQI near you

0.58ppm

How accurate is Illinois, USA air quality data?

Air quality data and pollutant measurements for Illinois, 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

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Frequently asked questions

How often is the air quality data for Mchenry, Illinois updated?

The air quality for Mchenry, Illinois is updated every hour.

When was the worst air quality at Mchenry, Illinois in the last 24 hrs?

The worst air quality in Mchenry, Illinois in the last 24 hours was observed at 10:00:00 on 2025-07-22.

When was the best air quality at Mchenry, Illinois in the last 24 hrs?

In the last 24 hrs, the best air quality in Mchenry, Illinois was observed at 03:00:00 on 2025-07-22.

What is the current air quality in Mchenry, Illinois?

The current air quality in Mchenry, Illinois is 79, categorized as Moderate based on real-time data.

What pollutant is the most common in Mchenry, Illinois?

The most common pollutant in Mchenry, Illinois is PM2.5.

What should I do if the air quality in Mchenry, Illinois is poor?

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

What is the current concentration of PM_2.5 in Mchenry, Illinois?

The current PM_2.5 concentration at Mchenry, Illinois is 23.945 μg/m³.

What is the current concentration of PM₁₀ in Mchenry, Illinois?

The current PM₁₀ concentration at Mchenry, Illinois is 63.954 μg/m³.

What is the current concentration of carbon monoxide (CO) in Mchenry, Illinois?

The current carbon monoxide (CO) concentration at Mchenry, Illinois is 0.564 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Mchenry, Illinois?

The current sulfur dioxide (SO₂) concentration at Mchenry, Illinois is 0.776 ppb.

What is the current concentration of ozone (O₃) in Mchenry, Illinois?

The current ozone (O₃) concentration at Mchenry, Illinois is 61.21 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Mchenry, Illinois?

The current nitrogen dioxide (NO₂) concentration at Mchenry, Illinois is 1.948 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-21T13:00:00.000Z	142 \| sensitive	52.072 \| moderate	146.347 \| fine	25.236 \| good	0.822 \| good	5.465 \| good	0.17 \| good
2025-07-21T14:00:00.000Z	132 \| sensitive	48.387 \| moderate	153.489 \| fine	23.2 \| good	0.784 \| good	3.033 \| good	0.146 \| good
2025-07-21T15:00:00.000Z	117 \| sensitive	41.04 \| moderate	186.846 \| moderate	24.443 \| good	1.628 \| good	2.929 \| good	0.146 \| good
2025-07-21T16:00:00.000Z	114 \| sensitive	36.904 \| moderate	181.082 \| moderate	27.55 \| good	1.676 \| good	1.791 \| good	0.134 \| good
2025-07-21T17:00:00.000Z	96 \| moderate	33.392 \| fine	130.909 \| fine	29.13 \| good	0.904 \| good	1.488 \| good	0.134 \| good
2025-07-21T18:00:00.000Z	82 \| moderate	25.833 \| fine	58.804 \| fine	38.84 \| good	0.801 \| good	1.854 \| good	0.162 \| good
2025-07-21T19:00:00.000Z	81 \| moderate	25.483 \| fine	97.269 \| fine	42.515 \| good	0.971 \| good	2.117 \| good	0.197 \| good
2025-07-21T20:00:00.000Z	82 \| moderate	26.352 \| fine	115.388 \| fine	43.656 \| good	0.716 \| good	1.56 \| good	0.197 \| good
2025-07-21T21:00:00.000Z	83 \| moderate	25.595 \| fine	119.829 \| fine	49.666 \| good	1.371 \| good	1.745 \| good	0.22 \| good
2025-07-21T22:00:00.000Z	86 \| moderate	28.171 \| fine	103.782 \| fine	43.317 \| good	1.481 \| good	2.003 \| good	0.247 \| good
2025-07-21T23:00:00.000Z	79 \| moderate	24.292 \| fine	82.306 \| fine	48.278 \| good	0.921 \| good	1.556 \| good	0.256 \| good
2025-07-22T00:00:00.000Z	73 \| moderate	20.575 \| fine	52.712 \| good	45.221 \| good	0.923 \| good	1.881 \| good	0.28 \| good
2025-07-22T01:00:00.000Z	84 \| moderate	26.968 \| fine	115.596 \| fine	45.383 \| good	1.337 \| good	2.63 \| good	0.309 \| good
2025-07-22T02:00:00.000Z	84 \| moderate	27.31 \| fine	107.601 \| fine	41.014 \| good	1.153 \| good	3.414 \| good	0.296 \| good
2025-07-22T03:00:00.000Z	49 \| good	9.137 \| good	40.467 \| good	30.592 \| good	0.827 \| good	6.507 \| good	0.251 \| good
2025-07-22T04:00:00.000Z	91 \| moderate	28.476 \| fine	135.476 \| fine	34.61 \| good	0.42 \| good	6.1 \| good	0.212 \| good
2025-07-22T05:00:00.000Z	86 \| moderate	27.622 \| fine	81.476 \| fine	32.818 \| good	0.536 \| good	7.796 \| good	0.163 \| good
2025-07-22T06:00:00.000Z	75 \| moderate	22.211 \| fine	45.888 \| good	28.938 \| good	0.701 \| good	9.562 \| good	0.148 \| good
2025-07-22T07:00:00.000Z	66 \| moderate	17.334 \| fine	65.188 \| fine	28.247 \| good	0.592 \| good	8.975 \| good	0.123 \| good
2025-07-22T08:00:00.000Z	75 \| moderate	21.765 \| fine	64.276 \| fine	26.026 \| good	0.458 \| good	12.849 \| good	0.123 \| good
2025-07-22T09:00:00.000Z	73 \| moderate	20.723 \| fine	84.972 \| fine	21.077 \| good	0.279 \| good	11.948 \| good	0.112 \| good
2025-07-22T10:00:00.000Z	77 \| moderate	22.935 \| fine	78.187 \| fine	19.444 \| good	0.317 \| good	9.648 \| good	0.123 \| good
2025-07-22T11:00:00.000Z	70 \| moderate	18.74 \| fine	93.288 \| fine	18.591 \| good	0.487 \| good	7.14 \| good	0.176 \| good
2025-07-22T12:00:00.000Z	82 \| moderate	26.273 \| fine	92.299 \| fine	18.899 \| good	0.526 \| good	7.329 \| good	0.176 \| good
2025-07-22T13:00:00.000Z	88 \| moderate	29.042 \| fine	128.434 \| fine	20.067 \| good	0.318 \| good	7.012 \| good	0.176 \| good
2025-07-22T14:00:00.000Z	75 \| moderate	22.252 \| fine	96.745 \| fine	20.963 \| good	0.754 \| good	4.319 \| good	0.184 \| good
2025-07-22T15:00:00.000Z	81 \| moderate	25.212 \| fine	111.418 \| fine	24.621 \| good	0.846 \| good	5.282 \| good	0.225 \| good
2025-07-22T16:00:00.000Z	88 \| moderate	28.536 \| fine	71.165 \| fine	34.064 \| good	1.16 \| good	3.977 \| good	0.216 \| good
2025-07-22T17:00:00.000Z	93 \| moderate	30.894 \| fine	139.495 \| fine	41.9 \| good	1.094 \| good	2.291 \| good	0.216 \| good
2025-07-22T18:00:00.000Z	90 \| moderate	30.309 \| fine	110.655 \| fine	49.758 \| good	1.101 \| good	2.441 \| good	0.204 \| good
2025-07-22T19:00:00.000Z	90 \| moderate	30.313 \| fine	132.761 \| fine	55.438 \| fine	0.974 \| good	2.088 \| good	0.252 \| good
2025-07-22T20:00:00.000Z	84 \| moderate	27.019 \| fine	80.54 \| fine	63.887 \| fine	0.84 \| good	1.83 \| good	0.273 \| good
2025-07-22T21:00:00.000Z	93 \| moderate	27.327 \| fine	77.077 \| fine	68.149 \| fine	0.741 \| good	1.851 \| good	0.395 \| good
2025-07-22T22:00:00.000Z	101 \| sensitive	23.453 \| fine	62.425 \| fine	70.644 \| fine	0.779 \| good	1.848 \| good	0.527 \| good
2025-07-22T23:00:00.000Z	73 \| moderate	21.423 \| fine	71.272 \| fine	60.127 \| fine	0.737 \| good	1.859 \| good	0.614 \| good
2025-07-23T00:00:00.000Z	79 \| moderate	23.945 \| fine	63.954 \| fine	61.21 \| fine	0.776 \| good	1.948 \| good	0.564 \| good
2025-07-23T01:00:00.000Z	87 \| moderate	22.23 \| fine	92.338 \| fine	65.547 \| fine	0.702 \| good	2.557 \| good	0.541 \| good
2025-07-23T02:00:00.000Z	77 \| moderate	22.802 \| fine	89.214 \| fine	57.71 \| fine	0.667 \| good	4.913 \| good	0.577 \| good
2025-07-23T03:00:00.000Z	71 \| moderate	20.38 \| fine	90.32 \| fine	50.433 \| good	0.586 \| good	5.715 \| good	0.588 \| good
2025-07-23T04:00:00.000Z	73 \| moderate	20.955 \| fine	83.291 \| fine	48.657 \| good	0.583 \| good	4.279 \| good	0.491 \| good
2025-07-23T05:00:00.000Z	71 \| moderate	19.926 \| fine	57.15 \| fine	47.497 \| good	0.568 \| good	4.379 \| good	0.491 \| good
2025-07-23T06:00:00.000Z	71 \| moderate	19.617 \| fine	76.009 \| fine	46.454 \| good	0.929 \| good	6.133 \| good	0.492 \| good
2025-07-23T07:00:00.000Z	69 \| moderate	18.974 \| fine	70.285 \| fine	44.694 \| good	2.249 \| good	5.162 \| good	0.468 \| good
2025-07-23T08:00:00.000Z	69 \| moderate	19.457 \| fine	84.583 \| fine	43.083 \| good	3.119 \| good	6.026 \| good	0.411 \| good
2025-07-23T09:00:00.000Z	69 \| moderate	18.832 \| fine	82.897 \| fine	41.762 \| good	2.308 \| good	5.467 \| good	0.411 \| good
2025-07-23T10:00:00.000Z	67 \| moderate	17.566 \| fine	65.033 \| fine	43.108 \| good	1.949 \| good	10.171 \| good	0.411 \| good
2025-07-23T11:00:00.000Z	66 \| moderate	16.659 \| fine	66.302 \| fine	39.936 \| good	1.268 \| good	8.196 \| good	0.411 \| good
2025-07-23T12:00:00.000Z	66 \| moderate	16.659 \| fine	66.302 \| fine	39.936 \| good	1.268 \| good	8.196 \| good	0.411 \| good
2025-07-23T01:00:00.000Z	60 \| moderate	14.385 \| fine	64.121 \| fine	48.404 \| good	1.622 \| good	5.328 \| good	0.248 \| good
2025-07-23T02:00:00.000Z	58 \| moderate	13.221 \| fine	59.72 \| fine	40.599 \| good	1.756 \| good	6.94 \| good	0.258 \| good
2025-07-23T03:00:00.000Z	64 \| moderate	15.796 \| fine	69.65 \| fine	34.94 \| good	1.891 \| good	8.552 \| good	0.267 \| good
2025-07-23T04:00:00.000Z	67 \| moderate	17.89 \| fine	79.268 \| fine	31.955 \| good	1.979 \| good	8.322 \| good	0.264 \| good
2025-07-23T05:00:00.000Z	67 \| moderate	17.714 \| fine	79.078 \| fine	31.946 \| good	2.068 \| good	8.092 \| good	0.261 \| good
2025-07-23T06:00:00.000Z	66 \| moderate	17.082 \| fine	75.5 \| fine	31.357 \| good	2.157 \| good	7.861 \| good	0.258 \| good
2025-07-23T07:00:00.000Z	66 \| moderate	16.786 \| fine	74.058 \| fine	29.825 \| good	2.052 \| good	7.264 \| good	0.253 \| good
2025-07-23T08:00:00.000Z	64 \| moderate	16.496 \| fine	73.476 \| fine	28.541 \| good	1.948 \| good	6.668 \| good	0.248 \| good
2025-07-23T09:00:00.000Z	66 \| moderate	17.105 \| fine	75.596 \| fine	29.102 \| good	1.843 \| good	6.071 \| good	0.243 \| good
2025-07-23T10:00:00.000Z	69 \| moderate	18.984 \| fine	83.631 \| fine	27.39 \| good	1.803 \| good	5.909 \| good	0.242 \| good
2025-07-23T11:00:00.000Z	71 \| moderate	19.785 \| fine	86.956 \| fine	23.62 \| good	1.763 \| good	5.747 \| good	0.241 \| good
2025-07-23T12:00:00.000Z	77 \| moderate	23.019 \| fine	100.522 \| fine	25.967 \| good	1.723 \| good	5.585 \| good	0.24 \| good
2025-07-23T13:00:00.000Z	79 \| moderate	24.129 \| fine	105.653 \| fine	30.617 \| good	2.23 \| good	4.867 \| good	0.241 \| good
2025-07-23T14:00:00.000Z	77 \| moderate	22.682 \| fine	99.656 \| fine	34.07 \| good	2.738 \| good	4.149 \| good	0.242 \| good
2025-07-23T15:00:00.000Z	73 \| moderate	20.889 \| fine	91.871 \| fine	37.919 \| good	3.245 \| good	3.431 \| good	0.244 \| good
2025-07-23T16:00:00.000Z	69 \| moderate	18.801 \| fine	82.453 \| fine	40.021 \| good	3.088 \| good	2.722 \| good	0.232 \| good
2025-07-23T17:00:00.000Z	67 \| moderate	17.706 \| fine	78.485 \| fine	42.38 \| good	2.932 \| good	2.013 \| good	0.219 \| good
2025-07-23T18:00:00.000Z	69 \| moderate	18.87 \| fine	82.668 \| fine	44.43 \| good	2.775 \| good	1.305 \| good	0.207 \| good
2025-07-23T19:00:00.000Z	69 \| moderate	19.044 \| fine	84.318 \| fine	45.687 \| good	2.355 \| good	1.299 \| good	0.201 \| good
2025-07-23T20:00:00.000Z	69 \| moderate	18.906 \| fine	83.891 \| fine	46.242 \| good	1.935 \| good	1.293 \| good	0.194 \| good
2025-07-23T21:00:00.000Z	69 \| moderate	18.884 \| fine	83.891 \| fine	46.691 \| good	1.515 \| good	1.287 \| good	0.187 \| good
2025-07-23T22:00:00.000Z	71 \| moderate	19.838 \| fine	86.668 \| fine	47.622 \| good	1.464 \| good	1.951 \| good	0.191 \| good
2025-07-23T23:00:00.000Z	73 \| moderate	21.32 \| fine	94.154 \| fine	46.15 \| good	1.413 \| good	2.616 \| good	0.196 \| good
2025-07-24T00:00:00.000Z	67 \| moderate	17.649 \| fine	78.283 \| fine	41.84 \| good	1.362 \| good	3.28 \| good	0.2 \| good
2025-07-24T01:00:00.000Z	60 \| moderate	14.055 \| fine	63 \| fine	39.188 \| good	1.421 \| good	4.057 \| good	0.206 \| good
2025-07-24T02:00:00.000Z	58 \| moderate	13.3 \| fine	59.591 \| fine	36.909 \| good	1.48 \| good	4.833 \| good	0.211 \| good
2025-07-24T03:00:00.000Z	62 \| moderate	15.058 \| fine	66.998 \| fine	34.326 \| good	1.539 \| good	5.609 \| good	0.217 \| good
2025-07-24T04:00:00.000Z	66 \| moderate	16.829 \| fine	74.874 \| fine	33.495 \| good	1.425 \| good	5.476 \| good	0.214 \| good
2025-07-24T05:00:00.000Z	64 \| moderate	16.298 \| fine	72.811 \| fine	29.733 \| good	1.312 \| good	5.343 \| good	0.211 \| good
2025-07-24T06:00:00.000Z	64 \| moderate	15.984 \| fine	71.081 \| fine	31.212 \| good	1.198 \| good	5.209 \| good	0.208 \| good
2025-07-24T07:00:00.000Z	67 \| moderate	17.937 \| fine	79.244 \| fine	30.311 \| good	1.1 \| good	4.93 \| good	0.206 \| good
2025-07-24T08:00:00.000Z	69 \| moderate	19.053 \| fine	84.811 \| fine	29.099 \| good	1.002 \| good	4.651 \| good	0.205 \| good
2025-07-24T09:00:00.000Z	73 \| moderate	21.217 \| fine	93.114 \| fine	30.171 \| good	0.904 \| good	4.371 \| good	0.203 \| good
2025-07-24T10:00:00.000Z	69 \| moderate	19.367 \| fine	85.187 \| fine	28.567 \| good	1.062 \| good	4.419 \| good	0.205 \| good
2025-07-24T11:00:00.000Z	73 \| moderate	21.353 \| fine	94.254 \| fine	28.591 \| good	1.221 \| good	4.466 \| good	0.207 \| good
2025-07-24T12:00:00.000Z	75 \| moderate	21.782 \| fine	96.129 \| fine	27.451 \| good	1.379 \| good	4.514 \| good	0.208 \| good
2025-07-24T13:00:00.000Z	73 \| moderate	20.618 \| fine	90.448 \| fine	31.047 \| good	1.454 \| good	3.876 \| good	0.21 \| good
2025-07-24T14:00:00.000Z	67 \| moderate	17.803 \| fine	78.514 \| fine	36.913 \| good	1.529 \| good	3.238 \| good	0.211 \| good
2025-07-24T15:00:00.000Z	58 \| moderate	13.38 \| fine	60.321 \| fine	38.88 \| good	1.604 \| good	2.6 \| good	0.213 \| good
2025-07-24T16:00:00.000Z	54 \| moderate	11.456 \| good	50.625 \| good	41.448 \| good	1.344 \| good	2.123 \| good	0.202 \| good
2025-07-24T17:00:00.000Z	54 \| moderate	10.585 \| good	46.61 \| good	39.447 \| good	1.085 \| good	1.647 \| good	0.191 \| good
2025-07-24T18:00:00.000Z	54 \| moderate	10.733 \| good	47.305 \| good	41.37 \| good	0.825 \| good	1.17 \| good	0.181 \| good
2025-07-24T19:00:00.000Z	52 \| moderate	10.382 \| good	45.834 \| good	44.064 \| good	0.732 \| good	1.175 \| good	0.177 \| good
2025-07-24T20:00:00.000Z	52 \| moderate	10.459 \| good	46.639 \| good	44.056 \| good	0.638 \| good	1.18 \| good	0.173 \| good
2025-07-24T21:00:00.000Z	52 \| moderate	9.889 \| good	43.973 \| good	41.526 \| good	0.544 \| good	1.185 \| good	0.169 \| good
2025-07-24T22:00:00.000Z	52 \| moderate	9.894 \| good	44.049 \| good	40.556 \| good	0.562 \| good	1.723 \| good	0.175 \| good
2025-07-24T23:00:00.000Z	49 \| good	9.254 \| good	41.306 \| good	36.787 \| good	0.58 \| good	2.261 \| good	0.182 \| good
2025-07-25T00:00:00.000Z	74 \| moderate	5.255 \| good	6.174 \| good	61.867 \| fine	0.589 \| good	2.751 \| good	0.188 \| good

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Major air pollutants in McHenry, Illinois

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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