ID: 1585

AQSQID: 460330132

Site Name: Wind Cave

Added: April 21, 2020, 6:24 p.m.

Updated: Sept. 20, 2021, 4:59 p.m.

Location: Hot Spgs (Prairie Vista Trl), SD

Reporting: True, Located: True

Current AQI: 34.0

Hot Spgs (Prairie Vista Trl) SD, US: 43.557613, -103.483658

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (9) 34.0
 
Sept. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 8.0 μg/m3 (8) 1.7 μg/m3 (8) 32.0
 
Sept. 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 9.0 μg/m3 (9) 4.1 μg/m3 (18) 32.0
 
Sept. 20, 2021, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 9.0 μg/m3 (9) 7.5 μg/m3 (32) 32.0
 
Sept. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 11.0 μg/m3 (11) 8.5 μg/m3 (36) 36.0
 
Sept. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 12.0 μg/m3 (12) 10.0 μg/m3 (42) 42.0
 
Sept. 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 11.0 μg/m3 (11) 8.5 μg/m3 (36) 36.0
 
Sept. 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 15.0 μg/m3 (14) 10.5 μg/m3 (44) 44.0
 
Sept. 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 19.0 μg/m3 (18) 10.5 μg/m3 (44) 44.0
 
Sept. 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 15.0 μg/m3 (14) 9.5 μg/m3 (40) 40.0
 
Sept. 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 16.0 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
Sept. 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 13.0 μg/m3 (13) 10.7 μg/m3 (45) 45.0
 
Sept. 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 14.0 μg/m3 (13) 9.7 μg/m3 (41) 41.0
 
Sept. 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 20.0 μg/m3 (19) 15.9 μg/m3 (59) 59.0
 
Sept. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 17.0 μg/m3 (16) 6.8 μg/m3 (29) 39.0
 
Sept. 20, 2021, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 13.0 μg/m3 (13) 6.3 μg/m3 (27) 42.0
 
Sept. 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 17.0 μg/m3 (16) 3.9 μg/m3 (17) 43.0
 
Sept. 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 10.0 μg/m3 (10) 5.3 μg/m3 (23) 43.0
 
Sept. 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 26.0 μg/m3 (25) 6.5 μg/m3 (28) 43.0
 
Sept. 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 19.0 μg/m3 (18) 4.8 μg/m3 (20) 42.0
 
Sept. 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 10.0 μg/m3 (10) 4.3 μg/m3 (18) 40.0
 
Sept. 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 10.0 μg/m3 (10) 4.5 μg/m3 (19) 39.0
 
Sept. 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 6.0 μg/m3 (6) 3.4 μg/m3 (15) 39.0
 
Sept. 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 9.0 μg/m3 (9) 1.2 μg/m3 (5) 38.0
 
Sept. 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 6.0 μg/m3 (6) 2.9 μg/m3 (13) 36.0
 
Sept. 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 4.0 μg/m3 (4) 3.6 μg/m3 (16) 35.0
 
Sept. 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 4.0 μg/m3 (4) 0.8 μg/m3 (4) 35.0
 
Sept. 19, 2021, noon N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 4.0 μg/m3 (4) 1.7 μg/m3 (8) 36.0
 
Sept. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 7.0 μg/m3 (7) 2.2 μg/m3 (10) 37.0
 
Sept. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 13.0 μg/m3 (13) 3.9 μg/m3 (17) 38.0
 
Sept. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 8.0 μg/m3 (8) 3.0 μg/m3 (13) 38.0
 
Sept. 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 10.0 μg/m3 (10) 2.7 μg/m3 (12) 38.0
 
Sept. 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 11.0 μg/m3 (11) 0.2 μg/m3 (1) 38.0
 
Sept. 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 12.0 μg/m3 (12) 1.7 μg/m3 (8) 37.0
 
Sept. 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 8.0 μg/m3 (8) 1.5 μg/m3 (7) 38.0
 
Sept. 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 13.0 μg/m3 (13) -0.2 μg/m3 (0) 38.0
 
Sept. 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 13.0 μg/m3 (13) 4.6 μg/m3 (20) 39.0
 
Sept. 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 19.0 μg/m3 (18) 8.0 μg/m3 (34) 40.0
 
Sept. 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 9.0 μg/m3 (9) 7.0 μg/m3 (30) 47.0
 
Sept. 19, 2021, midnight N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 10.0 μg/m3 (10) 3.9 μg/m3 (17) 49.0
 
Sept. 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 8.0 μg/m3 (8) 0.2 μg/m3 (1) 50.0
 
Sept. 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 8.0 μg/m3 (8) 3.0 μg/m3 (13) 49.0
 
Sept. 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 17.0 μg/m3 (16) 5.8 μg/m3 (25) 51.0
 
Sept. 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A 17.0 μg/m3 (16) 8.0 μg/m3 (34) 55.0
 
Sept. 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A 14.0 μg/m3 (13) 7.5 μg/m3 (32) 58.0
 
Sept. 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 16.0 μg/m3 (15) 9.0 μg/m3 (38) 50.0
 
Sept. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 14.0 μg/m3 (13) 9.2 μg/m3 (39) 50.0
 
Sept. 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 20.0 μg/m3 (19) 8.7 μg/m3 (37) 48.0
 
Sept. 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 17.0 μg/m3 (16) 7.3 μg/m3 (31) 43.0
 
Sept. 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 16.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
Sept. 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 12.0 μg/m3 (12) 10.5 μg/m3 (44) 44.0
 
Sept. 18, 2021, noon N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 18.0 μg/m3 (17) 6.0 μg/m3 (25) 41.0
 
Sept. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 35.0 μg/m3 (33) 7.7 μg/m3 (33) 39.0
 
Sept. 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 20.0 μg/m3 (19) 6.5 μg/m3 (28) 37.0
 
Sept. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 21.0 μg/m3 (20) 6.1 μg/m3 (26) 38.0
 
Sept. 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 40.0 μg/m3 (38) 5.8 μg/m3 (25) 38.0
 
Sept. 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 28.0 μg/m3 (26) 5.8 μg/m3 (25) 37.0
 
Sept. 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 20.0 μg/m3 (19) 8.5 μg/m3 (36) 38.0
 
Sept. 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 29.0 μg/m3 (27) 10.2 μg/m3 (43) 43.0
 
Sept. 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 40.0 μg/m3 (38) 12.5 μg/m3 (52) 52.0
 
Sept. 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 38.0 μg/m3 (36) 18.4 μg/m3 (65) 65.0
 
Sept. 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 49.0 μg/m3 (46) 28.5 μg/m3 (86) 86.0
 
Sept. 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 22.0 μg/m3 (21) 5.0 μg/m3 (21) 38.0
 
Sept. 18, 2021, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 79.0 μg/m3 (63) 53.7 μg/m3 (146) 146.0
 
Sept. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 25.0 μg/m3 (24) N/A 42.0
 
Sept. 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 73.0 μg/m3 (60) 46.3 μg/m3 (128) 128.0
 
Sept. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A N/A 50.0
 
Sept. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 30.0 μg/m3 (28) 7.5 μg/m3 (32) 38.0
 
Sept. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 11.0 μg/m3 (11) -1.7 μg/m3 (0) 34.0
 
Sept. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 8.0 μg/m3 (8) -0.9 μg/m3 (0) 32.0
 
Sept. 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 4.0 μg/m3 (4) 1.4 μg/m3 (6) 31.0
 
Sept. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 6.0 μg/m3 (6) 2.9 μg/m3 (13) 30.0
 
Sept. 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 6.0 μg/m3 (6) 1.2 μg/m3 (5) 29.0
 
Sept. 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 7.0 μg/m3 (7) 2.5 μg/m3 (11) 29.0
 
Sept. 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 8.0 μg/m3 (8) 3.8 μg/m3 (16) 29.0
 
Sept. 17, 2021, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (9) 29.0
 
Sept. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 6.0 μg/m3 (6) -0.7 μg/m3 (0) 31.0
 
Sept. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 7.0 μg/m3 (7) 0.5 μg/m3 (3) 34.0
 
Sept. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (9) 32.0
 
Sept. 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A -2.0 μg/m3 (0) 1.5 μg/m3 (7) 30.0
 
Sept. 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 1.0 μg/m3 (1) 3.8 μg/m3 (16) 32.0
 
Sept. 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 11.0 μg/m3 (11) 5.0 μg/m3 (21) 34.0
 
Sept. 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 12.0 μg/m3 (12) 0.7 μg/m3 (3) 35.0
 
Sept. 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 13.0 μg/m3 (13) 2.2 μg/m3 (10) 37.0
 
Sept. 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 14.0 μg/m3 (13) 3.1 μg/m3 (13) 38.0
 
Sept. 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 26.0 μg/m3 (25) 1.9 μg/m3 (8) 38.0
 
Sept. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 22.0 μg/m3 (21) 4.3 μg/m3 (18) 40.0
 
Sept. 17, 2021, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 29.0 μg/m3 (27) 5.2 μg/m3 (22) 40.0
 
Sept. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 30.0 μg/m3 (28) 4.6 μg/m3 (20) 42.0
 
Sept. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 30.0 μg/m3 (28) 3.8 μg/m3 (16) 44.0
 
Sept. 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 29.0 μg/m3 (27) 5.3 μg/m3 (23) 45.0
 
Sept. 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 26.0 μg/m3 (25) 5.0 μg/m3 (21) 44.0
 
Sept. 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 28.0 μg/m3 (26) 5.0 μg/m3 (21) 42.0
 
Sept. 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 34.0 μg/m3 (32) 5.3 μg/m3 (23) 40.0
 
Sept. 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 28.0 μg/m3 (26) 5.7 μg/m3 (24) 39.0
 
Sept. 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 18.0 μg/m3 (17) 1.6 μg/m3 (7) 43.0
 
Sept. 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 30.0 μg/m3 (28) 4.3 μg/m3 (18) 41.0
 
Sept. 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 17.0 μg/m3 (16) 6.0 μg/m3 (25) 40.0
 
Sept. 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 9.0 μg/m3 (9) 5.3 μg/m3 (23) 41.0
 
Sept. 16, 2021, noon N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 18.0 μg/m3 (17) 6.0 μg/m3 (25) 44.0
 
Sept. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 13.0 μg/m3 (13) 4.5 μg/m3 (19) 45.0
 
Sept. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 12.0 μg/m3 (12) 3.6 μg/m3 (16) 47.0
 
Sept. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 12.0 μg/m3 (12) 3.8 μg/m3 (16) 48.0
 
Sept. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 14.0 μg/m3 (13) 3.2 μg/m3 (14) 50.0
 
Sept. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 15.0 μg/m3 (14) 5.0 μg/m3 (21) 49.0
 
Sept. 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 8.0 μg/m3 (8) 5.0 μg/m3 (21) 50.0
 
Sept. 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 16.0 μg/m3 (15) 5.8 μg/m3 (25) 49.0
 
Sept. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 17.0 μg/m3 (16) 7.2 μg/m3 (31) 48.0
 
Sept. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 12.0 μg/m3 (12) 7.7 μg/m3 (33) 49.0
 
Sept. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 15.0 μg/m3 (14) 7.2 μg/m3 (31) 49.0
 
Sept. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 13.0 μg/m3 (13) 5.5 μg/m3 (23) 50.0
 
Sept. 16, 2021, midnight N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 15.0 μg/m3 (14) 6.7 μg/m3 (28) 50.0
 
Sept. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 14.0 μg/m3 (13) 7.9 μg/m3 (33) 50.0
 
Sept. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 16.0 μg/m3 (15) 4.8 μg/m3 (20) 50.0
 
Sept. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 9.0 μg/m3 (9) 5.7 μg/m3 (24) 51.0
 
Sept. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A 11.0 μg/m3 (11) 4.1 μg/m3 (18) 51.0
 
Sept. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A 13.0 μg/m3 (13) 5.4 μg/m3 (23) 50.0
 
Sept. 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 15.0 μg/m3 (14) 5.5 μg/m3 (23) 48.0
 
Sept. 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 19.0 μg/m3 (18) 4.5 μg/m3 (19) 44.0
 
Sept. 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 16.0 μg/m3 (15) 5.0 μg/m3 (21) 36.0
 
Sept. 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 11.0 μg/m3 (11) 6.2 μg/m3 (26) 33.0
 
Sept. 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 10.0 μg/m3 (10) 6.0 μg/m3 (25) 34.0
 
Sept. 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 13.0 μg/m3 (13) 5.7 μg/m3 (24) 40.0
 
Sept. 15, 2021, noon N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 15.0 μg/m3 (14) 4.3 μg/m3 (18) 38.0
 
Sept. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 14.0 μg/m3 (13) 5.0 μg/m3 (21) 36.0
 
Sept. 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 15.0 μg/m3 (14) 4.0 μg/m3 (17) 37.0
 
Sept. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 9.0 μg/m3 (9) 2.9 μg/m3 (13) 38.0
 
Sept. 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 11.0 μg/m3 (11) 2.9 μg/m3 (13) 39.0
 
Sept. 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 13.0 μg/m3 (13) 2.2 μg/m3 (10) 43.0
 
Sept. 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 18.0 μg/m3 (17) 2.0 μg/m3 (9) 44.0
 
Sept. 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 6.0 μg/m3 (6) 3.9 μg/m3 (17) 44.0
 
Sept. 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 5.0 μg/m3 (5) 3.4 μg/m3 (15) 43.0
 
Sept. 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 2.0 μg/m3 (2) 2.7 μg/m3 (12) 42.0
 
Sept. 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 6.0 μg/m3 (6) 5.5 μg/m3 (23) 43.0
 
Sept. 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 9.0 μg/m3 (9) 5.0 μg/m3 (21) 46.0
 
Sept. 15, 2021, midnight N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 12.0 μg/m3 (12) 4.5 μg/m3 (19) 47.0
 
Sept. 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A 6.0 μg/m3 (6) 3.3 μg/m3 (14) 49.0
 
Sept. 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A 8.0 μg/m3 (8) 3.6 μg/m3 (16) 47.0
 
Sept. 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 7.0 μg/m3 (7) 3.1 μg/m3 (13) 46.0
 
Sept. 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 7.0 μg/m3 (7) 3.1 μg/m3 (13) 43.0
 
Sept. 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 10.0 μg/m3 (10) 1.9 μg/m3 (8) 41.0
 
Sept. 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 11.0 μg/m3 (11) 2.6 μg/m3 (11) 38.0
 
Sept. 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 7.0 μg/m3 (7) 4.5 μg/m3 (19) 38.0
 
Sept. 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 8.0 μg/m3 (8) 4.8 μg/m3 (20) 37.0
 
Sept. 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 8.0 μg/m3 (8) 4.0 μg/m3 (17) 36.0
 
Sept. 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (12) 1.7 μg/m3 (8) 12.0
 
Sept. 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 7.0 μg/m3 (7) 0.2 μg/m3 (1) 38.0
 
Sept. 14, 2021, noon N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 12.0 μg/m3 (12) 1.2 μg/m3 (5) 38.0
 
Sept. 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 15.0 μg/m3 (14) 1.7 μg/m3 (8) 33.0
 
Sept. 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 2.0 μg/m3 (2) 1.7 μg/m3 (8) 38.0
 
Sept. 14, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 7.0 μg/m3 (7) 3.6 μg/m3 (16) 39.0
 
Sept. 14, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 12.0 μg/m3 (12) 5.5 μg/m3 (23) 33.0
 
Sept. 14, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 17.0 μg/m3 (16) 4.3 μg/m3 (18) 42.0
 
Sept. 14, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 16.0 μg/m3 (15) 3.3 μg/m3 (14) 38.0
 
Sept. 14, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 5.0 μg/m3 (5) 5.5 μg/m3 (23) 36.0
 
Sept. 14, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 7.0 μg/m3 (7) 4.5 μg/m3 (19) 38.0
 
Sept. 14, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 9.0 μg/m3 (9) 4.5 μg/m3 (19) 38.0
 
Sept. 14, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 3.0 μg/m3 (3) 5.8 μg/m3 (25) 38.0
 
Sept. 14, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 8.0 μg/m3 (8) 5.8 μg/m3 (25) 38.0
 
Sept. 14, 2021, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 9.0 μg/m3 (9) 8.2 μg/m3 (35) 37.0
 
Sept. 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 11.0 μg/m3 (11) 6.5 μg/m3 (28) 38.0
 
Sept. 13, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 13.0 μg/m3 (13) 4.0 μg/m3 (17) 39.0
 
Sept. 13, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 10.0 μg/m3 (10) 4.6 μg/m3 (20) 39.0
 
Sept. 13, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 13.0 μg/m3 (13) 4.3 μg/m3 (18) 38.0
 
Sept. 13, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 12.0 μg/m3 (12) 3.8 μg/m3 (16) 38.0
 
Sept. 13, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 15.0 μg/m3 (14) 2.7 μg/m3 (12) 34.0
 
Sept. 13, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 17.0 μg/m3 (16) 4.6 μg/m3 (20) 30.0
 
Sept. 13, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 11.0 μg/m3 (11) 4.5 μg/m3 (19) 26.0