ACA

This is a data Summary dashboard for April 2026 ACA Monitorings

Monitored Data

Map

April 2026 ACA Data Summary Table

Readings above the AAAQO and AAAQG
Alberta Capital Airshed
SO₂
hour
172ppb		 SO₂
day
48ppb		 SO₂
month
11ppb		 H₂S
hour
10ppb		 H₂S
day
3ppb		 TRS
30min
5ppb		 NO₂
hour
159ppb		 O₃
hour
76ppb		 PM2.5
hour
80µg/m³		 PM2.5
day
29µg/m³		 CO
hour
13ppm		 CO
8-hour
5ppm
April 2026
0 0 0 0 0 17 0 0 1 0 0 0
April 2025
0 0 0 0 0 3 0 0 1 0 0 0
Parameter ACA Edmonton East
N = 7211		 ACA Edmonton Lendrum
N = 7211		 ACA Edmonton McCauley
N = 7211		 ACA Enoch
N = 7211		 ACA OMorrow
N = 7211		 ACA Poachers Landing
N = 7211		 ACA St.Albert
N = 7211		 ACA Woodcroft
N = 7211		 Ardrossan
N = 7201		 Sherwood Park
N = 7201
SO2 0.8 (94.9%) 0.5 (94.7%)

0.1 (95.0%)
0.3 (94.6%) 0.2 (95.0%) 0.3 (95.6%) 1.1 (97.2%)
NO 2.0 (95.0%) 1.7 (94.7%) 2.1 (95.0%) 0.8 (94.7%)

1.3 (92.4%) 1.9 (95.0%) 1.0 (99.2%) 1.1 (99.3%)
NO2 9.0 (95.0%) 7.5 (94.7%) 8.9 (95.0%) 4.2 (94.7%)

7.3 (92.4%) 8.7 (95.0%) 4.6 (99.2%) 5.7 (95.0%)
NOX 11.0 (95.0%) 9.2 (94.7%) 11.0 (95.0%) 5.0 (94.7%)

8.6 (92.4%) 10.6 (95.0%) 5.5 (99.2%) 6.9 (95.0%)
O3 28.9 (94.6%) 32.5 (94.7%) 32.3 (95.0%) 34.5 (94.7%)

33.4 (93.3%) 32.3 (94.2%) 31.6 (95.6%) 35.4 (99.6%)
PM2.5 5.4 (99.9%) 5.0 (99.2%) 7.9 (99.4%) 4.9 (99.7%) 3.1 (99.9%)
4.2 (99.7%) 9.2 (98.6%) 2.5 (99.9%) 5.1 (99.6%)
RH 73.8 (100.0%) 70.1 (100.0%) 62.9 (100.0%) 65.4 (100.0%) 65.7 (100.0%)
70.6 (92.8%) 63.0 (100.0%)

ET 3.2 (100.0%) 3.1 (100.0%) 3.3 (100.0%) 2.5 (100.0%) 1.1 (100.0%)
2.9 (92.8%) 2.9 (100.0%) 2.1 (99.9%) 2.6 (100.0%)
BP



946.1 (100.0%) 950.0 (100.0%)



H2S 0.3 (95.0%)






0.0 (95.1%) 0.0 (99.0%)
TRS



0.4 (94.9%) 0.6 (95.1%)



THC 2.1 (91.4%)







2.0 (99.6%)
CH4 2.0 (91.4%)








NMHC 0.0 (91.4%)








CO 0.2 (95.0%)
0.2 (95.0%)






1 Mean (% Valid data)

April 2026 ACA AQHI Summary

AQHI Category ACA Edmonton East
N = 6801		 ACA Edmonton Lendrum
N = 6811		 ACA Edmonton McCauley
N = 6851		 ACA Enoch
N = 6831		 ACA St.Albert
N = 6611		 ACA Woodcroft
N = 6791		 Ardrossan
N = 6831		 Sherwood Park
N = 6771
AQHI







    1-3 Low 664 (98%) 669 (98%) 618 (90%) 682 (100%) 644 (97%) 620 (91%) 683 (100%) 662 (98%)
    4-6 Moderate 16 (2.4%) 12 (1.8%) 67 (9.8%) 1 (0.1%) 17 (2.6%) 59 (8.7%)
15 (2.2%)
    7-10 High







    Very High 10+







1 Count (% of total data)

Calendar Plots

Edmonton Woodcroft

AQHI

NO2

SO2

O3

PM2.5

St. Albert

AQHI

NO2

SO2

O3

PM2.5

Edmonton McCauley

AQHI

NO2

O3

PM2.5

CO

Edmonton Lendrum

AQHI

NO2

O3

PM2.5

SO2

Edmonton East

AQHI

NO2

O3

PM2.5

SO2

CO

THC

O’Morrow 1

SO2

TRS

PM2.5

Poachers Landing 2

TRS

Enoch

AQHI

NO2

O3

PM2.5

Nitrogen Dioxide (ppb)

Monthly plots

Readings above AAAQO

Readings above hourly AAAQO, Nitrogen Dioxide > 159ppb
[1] "No readings above hourly AAAQO"

Ozone (ppb)

Monthly plots

Readings above AAAQO

Readings above hourly AAAQO, Ozone > 76ppb
[1] "No readings above hourly AAAQO"

Particulate Matter (PM2.5)

Monthly plots

Readings above AAAQG and AAAQO

Readings above hourly AAAQG, PM2.5 > 80µg/m³
date SO2 NO NO2 NOX O3 PM2.5 RH ET ws wd AQHI lat lon site CO THC CH4 NMHC H2S TRS BP PR
2026-04-21 05:00:00 101 62 6.7 1.7 84 54 -114 ACA Edmonton McCauley
Readings above daily AAAQO, PM2.5 > 29µg/m³
[1] "No readings above daily AAAQO"

Sulphur Dioxide (ppb)

Monthly plots

Readings above AAAQO

Readings above hourly AAAQO, Sulphur Dioxide > 172ppb
[1] "No readings above hourly AAAQO"
Readings above daily AAAQO, Sulphur Dioxide > 48ppb
[1] "No readings above daily AAAQO"
Readings above monthly AAAQO, Sulphur Dioxide > 11ppb
[1] "No readings above monthly AAAQO"

Hydrogen Sulphide (ppb)

Monthly plots

Readings above AAAQO

Readings above hourly AAAQO, Hydrogen Sulphide > 10ppb
[1] "No readings above hourly AAAQO"
Readings above daily AAAQO, Hydrogen Sulphide > 3ppb
[1] "No readings above daily AAAQO"

Total Reduced Sulphur (ppb)

Monthly plots

Readings above AAAQO and AAAQG

Readings above 30min AAAQG, TRS > 5ppb
date OM wind speed OM wind direction PL wind speed PL wind direction site TRS
2026-04-14 04:00:00 10.8 236 9.2 234 ACA Poachers Landing 9.0
2026-04-14 04:30:00 10.6 229 8.8 230 ACA Poachers Landing 10.7
2026-04-14 05:00:00 7.3 232 3.9 262 ACA Poachers Landing 7.1
2026-04-14 06:30:00 12.2 236 8.0 235 ACA Poachers Landing 5.3
2026-04-14 07:00:00 15.9 240 10.6 240 ACA Poachers Landing 7.3
2026-04-19 17:00:00 11.5 234 12.0 235 ACA Poachers Landing 8.8
2026-04-19 21:30:00 18.3 341 18.3 345 ACA OMorrow 9.1
2026-04-19 22:00:00 9.4 328 8.2 334 ACA OMorrow 7.7
2026-04-20 04:00:00 4.2 216 0.0 167 ACA Poachers Landing 8.6
2026-04-20 04:30:00 7.1 214 1.6 172 ACA Poachers Landing 15.5
2026-04-20 05:00:00 6.8 224 1.2 251 ACA Poachers Landing 14.9
2026-04-20 05:30:00 4.9 218 1.4 109 ACA Poachers Landing 15.1
2026-04-20 06:00:00 2.1 237 2.2 168 ACA Poachers Landing 13.4
2026-04-20 06:30:00 1.4 238 0.9 171 ACA Poachers Landing 12.5
2026-04-20 07:00:00 2.7 140 1.5 74 ACA Poachers Landing 10.0
2026-04-20 07:30:00 4.0 137 0.6 132 ACA Poachers Landing 5.0
2026-04-21 02:00:00 9.8 215 2.5 290 ACA Poachers Landing 6.0
Readings above hourly AAAQO, using Hydrogen Sulphide > 10ppb for TRS
date SO2 NO NO2 NOX O3 PM2.5 RH ET ws wd AQHI lat lon site CO THC CH4 NMHC H2S TRS BP PR
2026-04-20 05:00:00 1.4 214 55 -113 ACA Poachers Landing 15 943
2026-04-20 06:00:00 1.8 102 55 -113 ACA Poachers Landing 14 943
2026-04-20 07:00:00 1.2 80 55 -113 ACA Poachers Landing 11 944
Readings above daily AAAQO, Hydrogen Sulphide > 3ppb for TRS
date site SO2 NO NO2 NOX O3 PM2.5 RH ET ws wd AQHI lat lon CO THC CH4 NMHC H2S TRS BP PR
2026-04-20 ACA Poachers Landing 6.5 217 55 -113 3.6 941

Carbon Monoxide (ppm)

Monthly plots

Readings above AAAQO

Readings above hourly AAAQO, Carbon Monoxide > 13ppm
[1] "No readings above hourly AAAQO"
Readings above 8hr AAAQO, Carbon Monoxide > 5ppm
[1] "No readings above daily AAAQO"

Total Hydrocarbons (ppm)

Meterology

Temperature

Relative Humidity

Precipitation

Barometric Pressure

Wind Roses April 2026