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

The current PM10 concentration at Mchenry, Illinois is 4.092 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Mchenry, Illinois is 0.497 ppb.

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

The current ozone (O3) concentration at Mchenry, Illinois is 19.679 ppm.

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

The current nitrogen dioxide (NO2) concentration at Mchenry, Illinois is 7.614 ppb.

McHenry, Illinois live air quality index now

Q: What is the current concentration of PM2.5 in Mchenry, Illinois?

The current PM2.5 concentration at Mchenry, Illinois is 1.071 μg/m3.

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)

11.60 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

67.48 μg/m³

155

255

425

605+

Ozone (O₃)

5.91 ppb

201

201+

Sulfur Dioxide (SO₂)

0.98 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

14.02 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.30 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
2025-10-23T09:00:00.000Z	14 \| good	1.585 \| good	6.443 \| good	15.081 \| good	0.75 \| good	5.41 \| good	0.193 \| good
2025-10-23T10:00:00.000Z	14 \| good	1.897 \| good	8.435 \| good	14.517 \| good	0.73 \| good	6.231 \| good	0.207 \| good
2025-10-23T11:00:00.000Z	13 \| good	2.186 \| good	11.129 \| good	13.943 \| good	0.814 \| good	5.906 \| good	0.267 \| good
2025-10-23T12:00:00.000Z	12 \| good	2.431 \| good	9.98 \| good	13.286 \| good	0.67 \| good	6.682 \| good	0.292 \| good
2025-10-23T13:00:00.000Z	12 \| good	2.377 \| good	9.21 \| good	13.397 \| good	0.749 \| good	6.574 \| good	0.3 \| good
2025-10-23T14:00:00.000Z	22 \| good	4.165 \| good	16.707 \| good	13.363 \| good	0.762 \| good	6.952 \| good	0.371 \| good
2025-10-23T15:00:00.000Z	16 \| good	3.295 \| good	12.455 \| good	11.547 \| good	0.92 \| good	4.849 \| good	0.228 \| good
2025-10-23T16:00:00.000Z	16 \| good	3.279 \| good	6.13 \| good	12.908 \| good	1.505 \| good	4.51 \| good	0.259 \| good
2025-10-23T17:00:00.000Z	16 \| good	2.82 \| good	10.184 \| good	15.412 \| good	1.205 \| good	4.301 \| good	0.249 \| good
2025-10-23T18:00:00.000Z	19 \| good	3.054 \| good	8.568 \| good	19.719 \| good	1 \| good	4.744 \| good	0.16 \| good
2025-10-23T19:00:00.000Z	21 \| good	2.77 \| good	10.658 \| good	22.724 \| good	1.066 \| good	4.848 \| good	0.208 \| good
2025-10-23T20:00:00.000Z	23 \| good	1.987 \| good	7.546 \| good	25.264 \| good	1.058 \| good	6.222 \| good	0.307 \| good
2025-10-23T21:00:00.000Z	25 \| good	1.877 \| good	5.406 \| good	26.828 \| good	1.063 \| good	5.286 \| good	0.255 \| good
2025-10-23T22:00:00.000Z	27 \| good	1.801 \| good	5.989 \| good	29.045 \| good	1.033 \| good	5.202 \| good	0.307 \| good
2025-10-23T23:00:00.000Z	25 \| good	1.936 \| good	6.001 \| good	27.177 \| good	0.966 \| good	5.785 \| good	0.255 \| good
2025-10-24T00:00:00.000Z	24 \| good	2.167 \| good	6.004 \| good	25.883 \| good	1.068 \| good	6.363 \| good	0.284 \| good
2025-10-24T01:00:00.000Z	23 \| good	3.12 \| good	11.524 \| good	24.627 \| good	1.771 \| good	13.196 \| good	0.222 \| good
2025-10-24T02:00:00.000Z	19 \| good	3.211 \| good	15.783 \| good	19.607 \| good	1.251 \| good	13.401 \| good	0.27 \| good
2025-10-24T03:00:00.000Z	19 \| good	1.071 \| good	4.092 \| good	19.679 \| good	0.497 \| good	7.614 \| good	0.165 \| good
2025-10-24T04:00:00.000Z	16 \| good	3.081 \| good	8.234 \| good	15.57 \| good	1.15 \| good	10.662 \| good	0.22 \| good
2025-10-24T05:00:00.000Z	16 \| good	3.063 \| good	11.113 \| good	16 \| good	1.026 \| good	8.171 \| good	0.24 \| good
2025-10-24T06:00:00.000Z	16 \| good	3.034 \| good	8.726 \| good	16.296 \| good	1.036 \| good	8.662 \| good	0.251 \| good
2025-10-24T07:00:00.000Z	16 \| good	3.04 \| good	9.791 \| good	15.759 \| good	1.184 \| good	8.43 \| good	0.261 \| good
2025-10-24T08:00:00.000Z	17 \| good	3.421 \| good	8.264 \| good	17.706 \| good	1.136 \| good	5.86 \| good	0.257 \| good
2025-10-24T09:00:00.000Z	16 \| good	3.078 \| good	9.551 \| good	14.481 \| good	0.921 \| good	8.327 \| good	0.238 \| good
2025-10-24T10:00:00.000Z	16 \| good	3.095 \| good	8.044 \| good	10.368 \| good	1.036 \| good	12.532 \| good	0.309 \| good
2025-10-24T11:00:00.000Z	16 \| good	2.812 \| good	11.104 \| good	11.852 \| good	1.099 \| good	14.445 \| good	0.238 \| good
2025-10-24T12:00:00.000Z	16 \| good	2.966 \| good	9.726 \| good	6.381 \| good	1.106 \| good	15.365 \| good	0.29 \| good
2025-10-24T13:00:00.000Z	16 \| good	3.374 \| good	9.423 \| good	11.266 \| good	1.05 \| good	13.209 \| good	0.29 \| good
2025-10-24T14:00:00.000Z	22 \| good	4.339 \| good	16.433 \| good	11.683 \| good	0.963 \| good	13.307 \| good	0.416 \| good
2025-10-24T15:00:00.000Z	22 \| good	4.265 \| good	11.621 \| good	10.516 \| good	1.163 \| good	13.43 \| good	0.255 \| good
2025-10-24T16:00:00.000Z	16 \| good	3.437 \| good	12.95 \| good	13.783 \| good	3.537 \| good	10.827 \| good	0.215 \| good
2025-10-24T17:00:00.000Z	16 \| good	2.747 \| good	12.03 \| good	16.531 \| good	0.983 \| good	6.335 \| good	0.222 \| good
2025-10-24T18:00:00.000Z	16 \| good	2.884 \| good	9.878 \| good	17.427 \| good	0.907 \| good	4.88 \| good	0.208 \| good
2025-10-24T19:00:00.000Z	19 \| good	2.635 \| good	10.2 \| good	20.307 \| good	0.999 \| good	5.491 \| good	0.267 \| good
2025-10-24T20:00:00.000Z	23 \| good	2.362 \| good	6.489 \| good	24.67 \| good	0.878 \| good	5.21 \| good	0.284 \| good
2025-10-24T21:00:00.000Z	24 \| good	2.839 \| good	10.95 \| good	25.944 \| good	0.871 \| good	4.767 \| good	0.208 \| good
2025-10-24T22:00:00.000Z	26 \| good	2.684 \| good	11.103 \| good	27.745 \| good	1.172 \| good	3.955 \| good	0.16 \| good
2025-10-24T23:00:00.000Z	29 \| good	3.528 \| good	17.389 \| good	30.725 \| good	1.312 \| good	7.171 \| good	0.236 \| good
2025-10-25T00:00:00.000Z	26 \| good	4.064 \| good	17.845 \| good	28.144 \| good	1.29 \| good	14.288 \| good	0.175 \| good
2025-10-25T01:00:00.000Z	27 \| good	4.657 \| good	18.464 \| good	20.415 \| good	0.734 \| good	22.509 \| good	0.328 \| good
2025-10-25T02:00:00.000Z	27 \| good	5.363 \| good	21.197 \| good	20.7 \| good	0.742 \| good	20.386 \| good	0.313 \| good
2025-10-25T03:00:00.000Z	49 \| good	9.464 \| good	42.223 \| good	7.566 \| good	1.657 \| good	19.814 \| good	0.281 \| good
2025-10-25T04:00:00.000Z	52 \| moderate	9.772 \| good	21.427 \| good	6.167 \| good	1.015 \| good	15.517 \| good	0.465 \| good
2025-10-25T05:00:00.000Z	52 \| moderate	10.051 \| good	39.549 \| good	7.667 \| good	1.176 \| good	14.669 \| good	0.356 \| good
2025-10-25T06:00:00.000Z	52 \| moderate	9.67 \| good	37.79 \| good	8.637 \| good	0.985 \| good	14.866 \| good	0.303 \| good
2025-10-25T07:00:00.000Z	57 \| moderate	11.602 \| good	67.483 \| fine	5.905 \| good	0.977 \| good	14.019 \| good	0.303 \| good
2025-10-25T08:00:00.000Z	52 \| moderate	9.807 \| good	39.58 \| good	4.678 \| good	0.785 \| good	13.931 \| good	0.303 \| good
2025-10-25T08:00:00.000Z	57 \| moderate	11.602 \| good	67.483 \| fine	5.905 \| good	0.977 \| good	14.019 \| good	0.303 \| good
2025-10-24T04:00:00.000Z	18 \| good	0.802 \| good	3 \| good	18.736 \| good	0.445 \| good	7.659 \| good	0.165 \| good
2025-10-24T05:00:00.000Z	16 \| good	0.183 \| good	0.195 \| good	17.321 \| good	0.435 \| good	7.573 \| good	0.165 \| good
2025-10-24T06:00:00.000Z	16 \| good	0.786 \| good	3 \| good	16.734 \| good	0.425 \| good	7.487 \| good	0.164 \| good
2025-10-24T07:00:00.000Z	16 \| good	0.443 \| good	1.321 \| good	17.008 \| good	0.432 \| good	7.025 \| good	0.16 \| good
2025-10-24T08:00:00.000Z	16 \| good	0.74 \| good	2.9 \| good	16.981 \| good	0.439 \| good	6.562 \| good	0.156 \| good
2025-10-24T09:00:00.000Z	14 \| good	0.746 \| good	2.979 \| good	15.28 \| good	0.445 \| good	6.099 \| good	0.151 \| good
2025-10-24T10:00:00.000Z	12 \| good	0.794 \| good	3 \| good	12.684 \| good	0.494 \| good	6.585 \| good	0.154 \| good
2025-10-24T11:00:00.000Z	8 \| good	0.754 \| good	2.9 \| good	8.896 \| good	0.542 \| good	7.071 \| good	0.157 \| good
2025-10-24T12:00:00.000Z	9 \| good	0.837 \| good	2.999 \| good	10.228 \| good	0.591 \| good	7.557 \| good	0.161 \| good
2025-10-24T13:00:00.000Z	11 \| good	0.876 \| good	3.1 \| good	12.142 \| good	0.699 \| good	6.56 \| good	0.163 \| good
2025-10-24T14:00:00.000Z	19 \| good	0.4 \| good	1.67 \| good	19.909 \| good	0.807 \| good	5.563 \| good	0.166 \| good
2025-10-24T15:00:00.000Z	20 \| good	0.801 \| good	3.021 \| good	22.363 \| good	0.916 \| good	4.565 \| good	0.169 \| good
2025-10-24T16:00:00.000Z	22 \| good	1.434 \| good	5.709 \| good	24.141 \| good	0.783 \| good	3.482 \| good	0.154 \| good
2025-10-24T17:00:00.000Z	24 \| good	1.696 \| good	6.984 \| good	26.397 \| good	0.65 \| good	2.4 \| good	0.139 \| good
2025-10-24T18:00:00.000Z	27 \| good	1.676 \| good	6.771 \| good	28.784 \| good	0.516 \| good	1.317 \| good	0.124 \| good
2025-10-24T19:00:00.000Z	29 \| good	1.667 \| good	6.771 \| good	30.913 \| good	0.529 \| good	1.441 \| good	0.124 \| good
2025-10-24T20:00:00.000Z	31 \| good	1.874 \| good	7.553 \| good	32.553 \| good	0.542 \| good	1.565 \| good	0.125 \| good
2025-10-24T21:00:00.000Z	31 \| good	1.928 \| good	7.928 \| good	33.148 \| good	0.555 \| good	1.69 \| good	0.126 \| good
2025-10-24T22:00:00.000Z	30 \| good	4.4 \| good	19.027 \| good	31.992 \| good	0.718 \| good	8.045 \| good	0.185 \| good
2025-10-24T23:00:00.000Z	33 \| good	5.733 \| good	24.829 \| good	26.033 \| good	0.88 \| good	14.401 \| good	0.243 \| good
2025-10-25T00:00:00.000Z	44 \| good	7.761 \| good	33.67 \| good	20.773 \| good	1.043 \| good	20.757 \| good	0.302 \| good
2025-10-25T01:00:00.000Z	44 \| good	7.837 \| good	34.781 \| good	15.795 \| good	1.282 \| good	22.287 \| good	0.31 \| good
2025-10-25T02:00:00.000Z	49 \| good	9.487 \| good	41.905 \| good	9.038 \| good	1.521 \| good	23.817 \| good	0.318 \| good
2025-10-25T03:00:00.000Z	54 \| moderate	11.023 \| good	48.746 \| good	3.683 \| good	1.759 \| good	25.347 \| good	0.326 \| good
2025-10-25T04:00:00.000Z	52 \| moderate	10.229 \| good	45.126 \| good	4.824 \| good	2.047 \| good	24.292 \| good	0.303 \| good
2025-10-25T05:00:00.000Z	56 \| moderate	11.824 \| good	53.109 \| good	5.626 \| good	2.334 \| good	23.237 \| good	0.28 \| good
2025-10-25T06:00:00.000Z	54 \| moderate	10.55 \| good	46.774 \| good	5.486 \| good	2.621 \| good	22.183 \| good	0.257 \| good
2025-10-25T07:00:00.000Z	54 \| moderate	10.676 \| good	47.163 \| good	4.897 \| good	2.838 \| good	21.58 \| good	0.247 \| good
2025-10-25T08:00:00.000Z	54 \| moderate	10.81 \| good	47.991 \| good	5.962 \| good	3.054 \| good	20.978 \| good	0.236 \| good
2025-10-25T09:00:00.000Z	52 \| moderate	9.868 \| good	44.106 \| good	5.768 \| good	3.271 \| good	20.375 \| good	0.225 \| good
2025-10-25T10:00:00.000Z	54 \| moderate	11.376 \| good	50.634 \| good	3.213 \| good	3.26 \| good	19.904 \| good	0.224 \| good
2025-10-25T11:00:00.000Z	52 \| moderate	10.105 \| good	44.923 \| good	2.558 \| good	3.25 \| good	19.433 \| good	0.223 \| good
2025-10-25T12:00:00.000Z	52 \| moderate	9.655 \| good	43.147 \| good	2.83 \| good	3.24 \| good	18.962 \| good	0.222 \| good
2025-10-25T13:00:00.000Z	49 \| good	9.069 \| good	39.765 \| good	8.213 \| good	3.439 \| good	16.195 \| good	0.224 \| good
2025-10-25T14:00:00.000Z	38 \| good	7.09 \| good	31.413 \| good	16.947 \| good	3.639 \| good	13.428 \| good	0.226 \| good
2025-10-25T15:00:00.000Z	38 \| good	6.767 \| good	30.021 \| good	20.99 \| good	3.839 \| good	10.661 \| good	0.228 \| good
2025-10-25T16:00:00.000Z	44 \| good	7.718 \| good	33.978 \| good	21.72 \| good	3.585 \| good	8.829 \| good	0.204 \| good
2025-10-25T17:00:00.000Z	49 \| good	8.666 \| good	37.725 \| good	25.28 \| good	3.33 \| good	6.998 \| good	0.18 \| good
2025-10-25T18:00:00.000Z	38 \| good	7.424 \| good	32.902 \| good	28.685 \| good	3.075 \| good	5.166 \| good	0.156 \| good
2025-10-25T19:00:00.000Z	38 \| good	7.315 \| good	32.118 \| good	30.259 \| good	3.046 \| good	5.64 \| good	0.158 \| good
2025-10-25T20:00:00.000Z	49 \| good	8.973 \| good	40.093 \| good	27.112 \| good	3.016 \| good	6.115 \| good	0.159 \| good
2025-10-25T21:00:00.000Z	54 \| moderate	10.98 \| good	48.339 \| good	23.195 \| good	2.987 \| good	6.59 \| good	0.161 \| good
2025-10-25T22:00:00.000Z	52 \| moderate	9.871 \| good	43.972 \| good	19.447 \| good	2.915 \| good	9.054 \| good	0.179 \| good
2025-10-25T23:00:00.000Z	52 \| moderate	10.254 \| good	45.445 \| good	20.485 \| good	2.843 \| good	11.518 \| good	0.197 \| good
2025-10-26T00:00:00.000Z	54 \| moderate	11.426 \| good	11.623 \| good	21.61 \| good	2.765 \| good	13.863 \| good	0.215 \| good
2025-10-26T01:00:00.000Z	38 \| good	7.446 \| good	33.143 \| good	27.001 \| good	2.719 \| good	13.687 \| good	0.212 \| good
2025-10-26T02:00:00.000Z	49 \| good	8.773 \| good	38.319 \| good	26.753 \| good	2.668 \| good	13.391 \| good	0.209 \| good
2025-10-26T03:00:00.000Z	54 \| moderate	10.682 \| good	47.319 \| good	24.364 \| good	2.617 \| good	13.096 \| good	0.206 \| good

McHenry

Get reliable air quality data to drive your business

McHenry, Illinois air quality map: Track AQI near you

0.36ppm

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 2025-10-23.

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 01:00:00 on 2025-10-23.

What is the current air quality in Mchenry, Illinois?

The current air quality in Mchenry, Illinois is 19, categorized as Good based on real-time data.

What pollutant is the most common in Mchenry, Illinois?

The most common pollutant in Mchenry, Illinois is O3.

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 1.071 μg/m³.

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

The current PM₁₀ concentration at Mchenry, Illinois is 4.092 μg/m³.

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

The current carbon monoxide (CO) concentration at Mchenry, Illinois is 0.165 ppm.

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

The current sulfur dioxide (SO₂) concentration at Mchenry, Illinois is 0.497 ppb.

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

The current ozone (O₃) concentration at Mchenry, Illinois is 19.679 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Mchenry, Illinois is 7.614 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-10-23T09:00:00.000Z	14 \| good	1.585 \| good	6.443 \| good	15.081 \| good	0.75 \| good	5.41 \| good	0.193 \| good
2025-10-23T10:00:00.000Z	14 \| good	1.897 \| good	8.435 \| good	14.517 \| good	0.73 \| good	6.231 \| good	0.207 \| good
2025-10-23T11:00:00.000Z	13 \| good	2.186 \| good	11.129 \| good	13.943 \| good	0.814 \| good	5.906 \| good	0.267 \| good
2025-10-23T12:00:00.000Z	12 \| good	2.431 \| good	9.98 \| good	13.286 \| good	0.67 \| good	6.682 \| good	0.292 \| good
2025-10-23T13:00:00.000Z	12 \| good	2.377 \| good	9.21 \| good	13.397 \| good	0.749 \| good	6.574 \| good	0.3 \| good
2025-10-23T14:00:00.000Z	22 \| good	4.165 \| good	16.707 \| good	13.363 \| good	0.762 \| good	6.952 \| good	0.371 \| good
2025-10-23T15:00:00.000Z	16 \| good	3.295 \| good	12.455 \| good	11.547 \| good	0.92 \| good	4.849 \| good	0.228 \| good
2025-10-23T16:00:00.000Z	16 \| good	3.279 \| good	6.13 \| good	12.908 \| good	1.505 \| good	4.51 \| good	0.259 \| good
2025-10-23T17:00:00.000Z	16 \| good	2.82 \| good	10.184 \| good	15.412 \| good	1.205 \| good	4.301 \| good	0.249 \| good
2025-10-23T18:00:00.000Z	19 \| good	3.054 \| good	8.568 \| good	19.719 \| good	1 \| good	4.744 \| good	0.16 \| good
2025-10-23T19:00:00.000Z	21 \| good	2.77 \| good	10.658 \| good	22.724 \| good	1.066 \| good	4.848 \| good	0.208 \| good
2025-10-23T20:00:00.000Z	23 \| good	1.987 \| good	7.546 \| good	25.264 \| good	1.058 \| good	6.222 \| good	0.307 \| good
2025-10-23T21:00:00.000Z	25 \| good	1.877 \| good	5.406 \| good	26.828 \| good	1.063 \| good	5.286 \| good	0.255 \| good
2025-10-23T22:00:00.000Z	27 \| good	1.801 \| good	5.989 \| good	29.045 \| good	1.033 \| good	5.202 \| good	0.307 \| good
2025-10-23T23:00:00.000Z	25 \| good	1.936 \| good	6.001 \| good	27.177 \| good	0.966 \| good	5.785 \| good	0.255 \| good
2025-10-24T00:00:00.000Z	24 \| good	2.167 \| good	6.004 \| good	25.883 \| good	1.068 \| good	6.363 \| good	0.284 \| good
2025-10-24T01:00:00.000Z	23 \| good	3.12 \| good	11.524 \| good	24.627 \| good	1.771 \| good	13.196 \| good	0.222 \| good
2025-10-24T02:00:00.000Z	19 \| good	3.211 \| good	15.783 \| good	19.607 \| good	1.251 \| good	13.401 \| good	0.27 \| good
2025-10-24T03:00:00.000Z	19 \| good	1.071 \| good	4.092 \| good	19.679 \| good	0.497 \| good	7.614 \| good	0.165 \| good
2025-10-24T04:00:00.000Z	16 \| good	3.081 \| good	8.234 \| good	15.57 \| good	1.15 \| good	10.662 \| good	0.22 \| good
2025-10-24T05:00:00.000Z	16 \| good	3.063 \| good	11.113 \| good	16 \| good	1.026 \| good	8.171 \| good	0.24 \| good
2025-10-24T06:00:00.000Z	16 \| good	3.034 \| good	8.726 \| good	16.296 \| good	1.036 \| good	8.662 \| good	0.251 \| good
2025-10-24T07:00:00.000Z	16 \| good	3.04 \| good	9.791 \| good	15.759 \| good	1.184 \| good	8.43 \| good	0.261 \| good
2025-10-24T08:00:00.000Z	17 \| good	3.421 \| good	8.264 \| good	17.706 \| good	1.136 \| good	5.86 \| good	0.257 \| good
2025-10-24T09:00:00.000Z	16 \| good	3.078 \| good	9.551 \| good	14.481 \| good	0.921 \| good	8.327 \| good	0.238 \| good
2025-10-24T10:00:00.000Z	16 \| good	3.095 \| good	8.044 \| good	10.368 \| good	1.036 \| good	12.532 \| good	0.309 \| good
2025-10-24T11:00:00.000Z	16 \| good	2.812 \| good	11.104 \| good	11.852 \| good	1.099 \| good	14.445 \| good	0.238 \| good
2025-10-24T12:00:00.000Z	16 \| good	2.966 \| good	9.726 \| good	6.381 \| good	1.106 \| good	15.365 \| good	0.29 \| good
2025-10-24T13:00:00.000Z	16 \| good	3.374 \| good	9.423 \| good	11.266 \| good	1.05 \| good	13.209 \| good	0.29 \| good
2025-10-24T14:00:00.000Z	22 \| good	4.339 \| good	16.433 \| good	11.683 \| good	0.963 \| good	13.307 \| good	0.416 \| good
2025-10-24T15:00:00.000Z	22 \| good	4.265 \| good	11.621 \| good	10.516 \| good	1.163 \| good	13.43 \| good	0.255 \| good
2025-10-24T16:00:00.000Z	16 \| good	3.437 \| good	12.95 \| good	13.783 \| good	3.537 \| good	10.827 \| good	0.215 \| good
2025-10-24T17:00:00.000Z	16 \| good	2.747 \| good	12.03 \| good	16.531 \| good	0.983 \| good	6.335 \| good	0.222 \| good
2025-10-24T18:00:00.000Z	16 \| good	2.884 \| good	9.878 \| good	17.427 \| good	0.907 \| good	4.88 \| good	0.208 \| good
2025-10-24T19:00:00.000Z	19 \| good	2.635 \| good	10.2 \| good	20.307 \| good	0.999 \| good	5.491 \| good	0.267 \| good
2025-10-24T20:00:00.000Z	23 \| good	2.362 \| good	6.489 \| good	24.67 \| good	0.878 \| good	5.21 \| good	0.284 \| good
2025-10-24T21:00:00.000Z	24 \| good	2.839 \| good	10.95 \| good	25.944 \| good	0.871 \| good	4.767 \| good	0.208 \| good
2025-10-24T22:00:00.000Z	26 \| good	2.684 \| good	11.103 \| good	27.745 \| good	1.172 \| good	3.955 \| good	0.16 \| good
2025-10-24T23:00:00.000Z	29 \| good	3.528 \| good	17.389 \| good	30.725 \| good	1.312 \| good	7.171 \| good	0.236 \| good
2025-10-25T00:00:00.000Z	26 \| good	4.064 \| good	17.845 \| good	28.144 \| good	1.29 \| good	14.288 \| good	0.175 \| good
2025-10-25T01:00:00.000Z	27 \| good	4.657 \| good	18.464 \| good	20.415 \| good	0.734 \| good	22.509 \| good	0.328 \| good
2025-10-25T02:00:00.000Z	27 \| good	5.363 \| good	21.197 \| good	20.7 \| good	0.742 \| good	20.386 \| good	0.313 \| good
2025-10-25T03:00:00.000Z	49 \| good	9.464 \| good	42.223 \| good	7.566 \| good	1.657 \| good	19.814 \| good	0.281 \| good
2025-10-25T04:00:00.000Z	52 \| moderate	9.772 \| good	21.427 \| good	6.167 \| good	1.015 \| good	15.517 \| good	0.465 \| good
2025-10-25T05:00:00.000Z	52 \| moderate	10.051 \| good	39.549 \| good	7.667 \| good	1.176 \| good	14.669 \| good	0.356 \| good
2025-10-25T06:00:00.000Z	52 \| moderate	9.67 \| good	37.79 \| good	8.637 \| good	0.985 \| good	14.866 \| good	0.303 \| good
2025-10-25T07:00:00.000Z	57 \| moderate	11.602 \| good	67.483 \| fine	5.905 \| good	0.977 \| good	14.019 \| good	0.303 \| good
2025-10-25T08:00:00.000Z	52 \| moderate	9.807 \| good	39.58 \| good	4.678 \| good	0.785 \| good	13.931 \| good	0.303 \| good
2025-10-25T08:00:00.000Z	57 \| moderate	11.602 \| good	67.483 \| fine	5.905 \| good	0.977 \| good	14.019 \| good	0.303 \| good
2025-10-24T04:00:00.000Z	18 \| good	0.802 \| good	3 \| good	18.736 \| good	0.445 \| good	7.659 \| good	0.165 \| good
2025-10-24T05:00:00.000Z	16 \| good	0.183 \| good	0.195 \| good	17.321 \| good	0.435 \| good	7.573 \| good	0.165 \| good
2025-10-24T06:00:00.000Z	16 \| good	0.786 \| good	3 \| good	16.734 \| good	0.425 \| good	7.487 \| good	0.164 \| good
2025-10-24T07:00:00.000Z	16 \| good	0.443 \| good	1.321 \| good	17.008 \| good	0.432 \| good	7.025 \| good	0.16 \| good
2025-10-24T08:00:00.000Z	16 \| good	0.74 \| good	2.9 \| good	16.981 \| good	0.439 \| good	6.562 \| good	0.156 \| good
2025-10-24T09:00:00.000Z	14 \| good	0.746 \| good	2.979 \| good	15.28 \| good	0.445 \| good	6.099 \| good	0.151 \| good
2025-10-24T10:00:00.000Z	12 \| good	0.794 \| good	3 \| good	12.684 \| good	0.494 \| good	6.585 \| good	0.154 \| good
2025-10-24T11:00:00.000Z	8 \| good	0.754 \| good	2.9 \| good	8.896 \| good	0.542 \| good	7.071 \| good	0.157 \| good
2025-10-24T12:00:00.000Z	9 \| good	0.837 \| good	2.999 \| good	10.228 \| good	0.591 \| good	7.557 \| good	0.161 \| good
2025-10-24T13:00:00.000Z	11 \| good	0.876 \| good	3.1 \| good	12.142 \| good	0.699 \| good	6.56 \| good	0.163 \| good
2025-10-24T14:00:00.000Z	19 \| good	0.4 \| good	1.67 \| good	19.909 \| good	0.807 \| good	5.563 \| good	0.166 \| good
2025-10-24T15:00:00.000Z	20 \| good	0.801 \| good	3.021 \| good	22.363 \| good	0.916 \| good	4.565 \| good	0.169 \| good
2025-10-24T16:00:00.000Z	22 \| good	1.434 \| good	5.709 \| good	24.141 \| good	0.783 \| good	3.482 \| good	0.154 \| good
2025-10-24T17:00:00.000Z	24 \| good	1.696 \| good	6.984 \| good	26.397 \| good	0.65 \| good	2.4 \| good	0.139 \| good
2025-10-24T18:00:00.000Z	27 \| good	1.676 \| good	6.771 \| good	28.784 \| good	0.516 \| good	1.317 \| good	0.124 \| good
2025-10-24T19:00:00.000Z	29 \| good	1.667 \| good	6.771 \| good	30.913 \| good	0.529 \| good	1.441 \| good	0.124 \| good
2025-10-24T20:00:00.000Z	31 \| good	1.874 \| good	7.553 \| good	32.553 \| good	0.542 \| good	1.565 \| good	0.125 \| good
2025-10-24T21:00:00.000Z	31 \| good	1.928 \| good	7.928 \| good	33.148 \| good	0.555 \| good	1.69 \| good	0.126 \| good
2025-10-24T22:00:00.000Z	30 \| good	4.4 \| good	19.027 \| good	31.992 \| good	0.718 \| good	8.045 \| good	0.185 \| good
2025-10-24T23:00:00.000Z	33 \| good	5.733 \| good	24.829 \| good	26.033 \| good	0.88 \| good	14.401 \| good	0.243 \| good
2025-10-25T00:00:00.000Z	44 \| good	7.761 \| good	33.67 \| good	20.773 \| good	1.043 \| good	20.757 \| good	0.302 \| good
2025-10-25T01:00:00.000Z	44 \| good	7.837 \| good	34.781 \| good	15.795 \| good	1.282 \| good	22.287 \| good	0.31 \| good
2025-10-25T02:00:00.000Z	49 \| good	9.487 \| good	41.905 \| good	9.038 \| good	1.521 \| good	23.817 \| good	0.318 \| good
2025-10-25T03:00:00.000Z	54 \| moderate	11.023 \| good	48.746 \| good	3.683 \| good	1.759 \| good	25.347 \| good	0.326 \| good
2025-10-25T04:00:00.000Z	52 \| moderate	10.229 \| good	45.126 \| good	4.824 \| good	2.047 \| good	24.292 \| good	0.303 \| good
2025-10-25T05:00:00.000Z	56 \| moderate	11.824 \| good	53.109 \| good	5.626 \| good	2.334 \| good	23.237 \| good	0.28 \| good
2025-10-25T06:00:00.000Z	54 \| moderate	10.55 \| good	46.774 \| good	5.486 \| good	2.621 \| good	22.183 \| good	0.257 \| good
2025-10-25T07:00:00.000Z	54 \| moderate	10.676 \| good	47.163 \| good	4.897 \| good	2.838 \| good	21.58 \| good	0.247 \| good
2025-10-25T08:00:00.000Z	54 \| moderate	10.81 \| good	47.991 \| good	5.962 \| good	3.054 \| good	20.978 \| good	0.236 \| good
2025-10-25T09:00:00.000Z	52 \| moderate	9.868 \| good	44.106 \| good	5.768 \| good	3.271 \| good	20.375 \| good	0.225 \| good
2025-10-25T10:00:00.000Z	54 \| moderate	11.376 \| good	50.634 \| good	3.213 \| good	3.26 \| good	19.904 \| good	0.224 \| good
2025-10-25T11:00:00.000Z	52 \| moderate	10.105 \| good	44.923 \| good	2.558 \| good	3.25 \| good	19.433 \| good	0.223 \| good
2025-10-25T12:00:00.000Z	52 \| moderate	9.655 \| good	43.147 \| good	2.83 \| good	3.24 \| good	18.962 \| good	0.222 \| good
2025-10-25T13:00:00.000Z	49 \| good	9.069 \| good	39.765 \| good	8.213 \| good	3.439 \| good	16.195 \| good	0.224 \| good
2025-10-25T14:00:00.000Z	38 \| good	7.09 \| good	31.413 \| good	16.947 \| good	3.639 \| good	13.428 \| good	0.226 \| good
2025-10-25T15:00:00.000Z	38 \| good	6.767 \| good	30.021 \| good	20.99 \| good	3.839 \| good	10.661 \| good	0.228 \| good
2025-10-25T16:00:00.000Z	44 \| good	7.718 \| good	33.978 \| good	21.72 \| good	3.585 \| good	8.829 \| good	0.204 \| good
2025-10-25T17:00:00.000Z	49 \| good	8.666 \| good	37.725 \| good	25.28 \| good	3.33 \| good	6.998 \| good	0.18 \| good
2025-10-25T18:00:00.000Z	38 \| good	7.424 \| good	32.902 \| good	28.685 \| good	3.075 \| good	5.166 \| good	0.156 \| good
2025-10-25T19:00:00.000Z	38 \| good	7.315 \| good	32.118 \| good	30.259 \| good	3.046 \| good	5.64 \| good	0.158 \| good
2025-10-25T20:00:00.000Z	49 \| good	8.973 \| good	40.093 \| good	27.112 \| good	3.016 \| good	6.115 \| good	0.159 \| good
2025-10-25T21:00:00.000Z	54 \| moderate	10.98 \| good	48.339 \| good	23.195 \| good	2.987 \| good	6.59 \| good	0.161 \| good
2025-10-25T22:00:00.000Z	52 \| moderate	9.871 \| good	43.972 \| good	19.447 \| good	2.915 \| good	9.054 \| good	0.179 \| good
2025-10-25T23:00:00.000Z	52 \| moderate	10.254 \| good	45.445 \| good	20.485 \| good	2.843 \| good	11.518 \| good	0.197 \| good
2025-10-26T00:00:00.000Z	54 \| moderate	11.426 \| good	11.623 \| good	21.61 \| good	2.765 \| good	13.863 \| good	0.215 \| good
2025-10-26T01:00:00.000Z	38 \| good	7.446 \| good	33.143 \| good	27.001 \| good	2.719 \| good	13.687 \| good	0.212 \| good
2025-10-26T02:00:00.000Z	49 \| good	8.773 \| good	38.319 \| good	26.753 \| good	2.668 \| good	13.391 \| good	0.209 \| good
2025-10-26T03:00:00.000Z	54 \| moderate	10.682 \| good	47.319 \| good	24.364 \| good	2.617 \| good	13.096 \| good	0.206 \| 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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