Chamizal C41/AH126 Data by Site by Date (all parameters)

This site has an Automated Gas Chromatograph. Click to view current AutoGC measurements at this site.

Use this form to retrieve hourly data collected at Chamizal C41/AH126 . Although this is the most current data, it is not considered official until it has been certified by the technical staff. This information is updated hourly.

This web page provides the most current hourly averaged data available. Our convention for time-tagging data is the beginning of each hour. For example, values shown for the noon hour are based on measurements taken from noon to 1:00 p.m. The noon average will not be calculated until after 1:00 p.m. The noon average will then be available on our external server from 1:15 p.m. to 1:30 p.m. This results in an apparent one-hour time lag in the data. We also present our data in Local Standard Time for each measuring site. For most of Texas this is Central Standard Time. During Daylight Savings, this introduces another apparent one-hour time lag in the data.

Use the controls below to select a different date or time format. Click on the Generate Report button once you have made your selections.

Click on the Plot Data button once the tabular report has been generated to open a separate window containing data plots.

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Green underline for validated data

The table below contains hourly averages for all the pollutants and meteorological conditions measured at Chamizal C41/AH126 for Wednesday, May 1, 2024. All times shown are in MST.

Parameter Measured	Morning												Afternoon	Parameter Measured	POC
Parameter Measured	Mid	1:00	2:00	3:00	4:00	5:00	6:00	7:00	8:00	9:00	10:00	11:00	Noon	Parameter Measured	POC
Carbon Monoxide	PMA	PMA	0.1	0.1	0.1	0.1	0.2	0.2	0.1	0.1	0.1	FEW	NA	Carbon Monoxide	2 ^N ^MDL
Sulfur Dioxide	PMA	PMA	NEG	NEG	NEG	NEG	NEG	-0.1	-0.2	-0.0	0.0	FEW	NA	Sulfur Dioxide	1 ^R ^MDL
NOy	PMA	PMA	LIM	LIM	LIM	LIM	LIM	LIM	LIM	LIM	LIM	LIM	NA	NOy	2 ^MDL
Nitric Oxide	PMA	PMA	-0.5	-0.4	-0.5	-0.2	2.7	3.4	1.2	0.3	0.0	FEW	NA	Nitric Oxide	1 ^MDL
Nitric Oxide	PMA	PMA	0.1	-3.6	-3.0	-2.2	0.9	2.3	-0.4	-1.4	-1.9	FEW	NA	Nitric Oxide	2 ^MDL
Nitrogen Dioxide	PMA	PMA	4.1	3.1	9.4	14.0	18.2	16.1	9.1	5.0	2.4	FEW	NA	Nitrogen Dioxide	1 ^R ^MDL
Oxides of Nitrogen	PMA	PMA	3.6	2.6	9.0	13.8	20.8	19.5	10.3	5.3	2.4	FEW	NA	Oxides of Nitrogen	1 ^MDL
Ozone	PMA	PMA	51	52	42	36	33	37	49	55	59	FEW	NA	Ozone	1 ^R ^MDL
Wind Speed	PMA	PMA	9.3	10.9	11.1	9.1	8.5	9.5	9.1	9.3	12.4	FEW	NA	Wind Speed	1
Wind Direction	PMA	PMA	291	286	275	263	261	274	280	298	280	FEW	NA	Wind Direction	1
Resultant Wind Speed	PMA	PMA	9.2	10.7	11.0	8.9	8.3	9.4	8.7	8.9	11.5	FEW	NA	Resultant Wind Speed	1
Resultant Wind Direction	PMA	PMA	291	287	274	265	261	273	279	298	280	FEW	NA	Resultant Wind Direction	1
Maximum Wind Gust	PMA	PMA	16.6	18.2	17.1	18.0	15.2	16.8	17.9	21.8	23.4	FEW	NA	Maximum Wind Gust	1
Std. Dev. Wind Direction	PMA	PMA	9	11	8	14	12	11	15	17	22	FEW	NA	Std. Dev. Wind Direction	1
Outdoor Temperature	PMA	PMA	73.4	72.0	68.4	66.6	67.3	70.5	74.5	77.8	79.8	FEW	NA	Outdoor Temperature	1
Dew Point Temperature	PMA	PMA	24.7	25.5	25.1	25.1	26.0	27.4	27.0	25.2	22.0	FEW	NA	Dew Point Temperature	1
Relative Humidity	PMA	PMA	16.1	17.5	19.5	20.7	21.0	20.0	17.2	14.4	11.7	FEW	NA	Relative Humidity	1
Solar Radiation	PMA	PMA	0.000	0.000	0.000	0.001	0.270	0.639	0.977	1.233	1.467	FEW	NA	Solar Radiation	1
PM-10 (Standard Conditions)	LST	FEW	22.8	22.2	29.8	32.2	42.9	57.1	41.1	38.8	36.9	FEW	NA	PM-10 (Standard Conditions)	6 ^R
PM10-2.5 Local Conditions	LST	FEW	16.57	15.99	22.02	23.81	32.50	43.47	31.02	29.38	28.12	FEW	NA	PM10-2.5 Local Conditions	6
PM-2.5 (Local Conditions)	LST	FEW	3.3	3.5	4.3	4.7	5.4	6.4	4.6	4.0	3.5	FEW	NA	PM-2.5 (Local Conditions)	6 ^R
Parameter Measured	Mid	1:00	2:00	3:00	4:00	5:00	6:00	7:00	8:00	9:00	10:00	11:00	Noon	Parameter Measured	POC
Parameter Measured	Morning												Afternoon	Parameter Measured	POC
	Maximum values for each parameter are bold within the table. Minimum values are *bold italic*.
	^R - Data from this instrument meets EPA quality assurance criteria for regulatory purposes.
	^N - Data from this instrument does not meet EPA quality assurance criteria and cannot be used for regulatory purposes.

PLEASE NOTE: This data has not been verified by the TCEQ and may change. This is the most current data, but it is not official until it has been certified by our technical staff. Data is collected from TCEQ ambient monitoring sites and may include data collected by other outside agencies. This data is updated hourly. All times shown are in local standard time unless otherwise indicated.

Following EPA reporting guidelines, negative values may be displayed in our hourly criteria air quality data, down to the negative of the EPA listed Method Detection Limit (MDL) for the particular instrument that made the measurements. The reported concentrations can be negative due to zero drift in the electronic instrument output, data logger channel, or calibration adjustments to the data. Prior to 1/1/2013, slightly negative values were automatically set to zero.

Texas Commission on Environmental Quality

Chamizal C41/AH126 Data by Site by Date (all parameters)